# Tembrica > Online toolkit: 680 browser-based tools across 51 categories. No installation needed. Tembrica offers 680 online tools across 51 categories: audio & video editing, format conversion, image & PDF tools, device & hearing tests, accessibility helpers (dyslexia, color-blindness), health & wellness, games, calculators, electronics, 3D-printing, developer utilities, language tests, and more. Most tools run entirely in your browser via WebAssembly (FFmpeg WASM), the Web Audio API, WebGPU and other Web APIs. Interface available in 9 languages: English (en), Russian (ru), Korean (ko), Arabic (ar), Indonesian (id), Portuguese (Brazil) (pt), German (de), Spanish (es), French (fr). Canonical domain for international locales: https://tembrica.com. Russian version: https://timbrica.com/ru. ## API for agents Tools can be called programmatically. Catalogue: https://tembrica.com/v1/tools — open, no key needed. Machine contract: https://tembrica.com/v1/openapi.json. MCP server: https://tembrica.com/mcp (streamable HTTP) — connects to any MCP client with one line of config. Calls are paid from a prepaid token balance; price any call up-front with POST /v1/tools/{slug}/estimate. A human creates the key in profile settings and hands it to the agent. Some tools compute in the caller's own browser: those runs return a work order with a URL, and tokens are charged only once a result is delivered. Two ways a call executes. The browser lane runs on the caller's own machine (your agent needs a browser): nominal price, generous limits. The server lane runs on ours: priced at cost, tight limits, and heavy jobs are queued and answer 202. Each tool declares its lanes in the catalogue; "lane":"auto" picks the cheapest available. Feedback: POST https://tembrica.com/v1/feedback — free, key required. Report a bug, a wrong result, or ask for a tool we do not have. Quote `run_id` when a specific call misbehaved and we can look up our own record of it. A human reads these. API terms: https://tembrica.com/docs/api/terms. The key owner is responsible for every call made with it, and disclosing AI-generated material to end users is the integrator's obligation. ## Audio (45) - [ACX Audiobook Mastering](https://tembrica.com/en/acx-mastering): ACX audiobook mastering tool — auto-normalize RMS, limit peaks, reduce noise, export 192 kbps CBR MP3 for Audible. - [Add Silence](https://tembrica.com/en/add-silence): Add silence to the beginning, end, or anywhere in your audio file — instant preview and export. - [AI Music Cleaner](https://tembrica.com/en/ai-music-cleaner): Add low-mid warmth and depth to heavily-compressed AI music. Apollo neural model preserves your highs while restoring the low-mid range. In your browser. - [Audio Censor](https://tembrica.com/en/audio-censor): Audio censor tool with 8 replacement types — beep, silence, reverse, pitch shift, noise and your own sound. Waveform editor with real-time preview. - [Audio Compressor](https://tembrica.com/en/audio-compressor): Drop any audio file and we will detect the format automatically. Optimal compression settings are applied based on the detected codec. - [Audio Degrader](https://tembrica.com/en/audio-degrader): Audio degrader with 12 degradation presets and 7 manual controls. Bitcrusher, noise, distortion, wow & flutter, filters — real-time preview with A/B comparison. - [Audio Enhancer](https://tembrica.com/en/audio-enhancer): Improve clarity, boost bass and treble, normalize volume, and reduce noise. Smart presets for speech and music. - [Audio Looper](https://tembrica.com/en/audio-looper): The most powerful audio looper online — repeat songs with crossfade, gap control, A/B section loop, fade effects, and target duration mode. Browser-based. - [Audio Mixer](https://tembrica.com/en/audio-mixer): Mix multiple audio tracks with per-track volume, pan, EQ, reverb, and compressor. Export your mix in any format. - [Audiobook Consistency Checker](https://tembrica.com/en/audiobook-checker): Upload all audiobook chapters to check ACX compliance and consistency - [Background Music](https://tembrica.com/en/background-music): Lay background music under a voice-over or narration online. Auto-ducking keeps speech clear, with looping and fades. Export MP3 or WAV. - [Channel Converter](https://tembrica.com/en/channel-converter): Upmix stereo to 5.1 or 7.1 surround, or downmix a surround file back to stereo or mono — in your browser. - [Audio Chapter Splitter](https://tembrica.com/en/chapter-splitter): Upload an audiobook, podcast, or lecture — split it into named chapters and export as a ZIP archive. - [Convert Audio](https://tembrica.com/en/convert): Convert audio between MP3, WAV, FLAC, OGG, AAC and 35+ other formats. Batch up to 500 files — adjustable bitrate, sample rate, and quality. - [Audio Denoiser](https://tembrica.com/en/denoise): Remove background noise from voice recordings, podcasts, and music. Smart profiles for different noise types. - [8-Bit Chiptune Synthesizer](https://tembrica.com/en/eight-bit-converter): Full song or solo melody to authentic 8-bit chiptune with real NES waveforms. 8 presets. - [Equalizer](https://tembrica.com/en/equalizer): Professional 10-band equalizer with real-time preview, spectrum analyzer, and 14 presets. Adjust bass, treble, mids, apply high/low-pass filters — all directly in your browser. - [Extract Audio from Video](https://tembrica.com/en/extract-audio): Extract the audio track from any video file — MP4, AVI, MKV, MOV, WebM and more. Quick lossless extraction or convert to MP3, WAV, FLAC. All processing in your browser. - [Audio Joiner](https://tembrica.com/en/join): Combine multiple audio files into a single track with per-clip editing, smooth crossfades, and loudness normalization — all in your browser. - [MIDI to MP3/WAV](https://tembrica.com/en/midi): Play MIDI files in your browser with piano roll visualization. Adjust tempo, mute tracks, export to MP3. - [MIDI Humanizer](https://tembrica.com/en/midi-humanizer): Adds ensemble timing, phrasing and CC1/CC11 inside held notes to a MIDI score. Export MIDI and WAV, right in the browser. - [Mono to Stereo](https://tembrica.com/en/mono-to-stereo): Convert mono audio files to stereo — duplicate, pan, or create pseudo-stereo effect. Runs in your browser. - [Multi-Track Recorder](https://tembrica.com/en/multi-track): Record from multiple microphones simultaneously in separate tracks. - [Music Mastering](https://tembrica.com/en/music-mastering): Online music mastering — streaming loudness, true-peak limiting, reference matching, WAV/MP3 download. - [Change Pitch](https://tembrica.com/en/pitch): A powerful browser-based pitch shifter with real-time preview, automatic key detection, BPM analysis, and precise semitone/cent control. Transpose any song to match your vocal range or instrument key. - [Podcast Insert](https://tembrica.com/en/podcast-insert): Insert audio segments — ads, intros, outros, jingles — at any point in your podcast episode. Visual waveform editor with precise placement. - [Audio Profanity Remover](https://tembrica.com/en/profanity-remover): AI speech recognition finds swear words and mutes exactly those words by timecode - [Recording Studio](https://tembrica.com/en/recording-studio): Upload a backing track and record your voice over it. - [Word removal from a song](https://tembrica.com/en/remove-word-from-song): Click a syllable on the vocal lane to select it. - [Audio Repair](https://tembrica.com/en/repair-audio): Fix corrupted or broken audio files — repair headers, timestamps, and codec-level damage. - [Reverb & Echo](https://tembrica.com/en/reverb-echo): Add reverb, echo, or both to your audio. Apply to the entire file or just a selected region. Real-time preview, 12 presets, in your browser. - [Reverse Audio](https://tembrica.com/en/reverse): Reverse any audio file to play it backwards — partial reverse, palindrome mode, fade effects, speed control, and mic recording. The most powerful audio reverser online. - [Ringtone Maker](https://tembrica.com/en/ringtone): Select a fragment up to 40 seconds for your ringtone - [Sound Effect Generator](https://tembrica.com/en/sfx-generator): Describe a sound in words and the AI creates the SFX, ambience or UI sound. Two engines, seamless looping, adjustable duration and accuracy. - [Silence Remover](https://tembrica.com/en/silence-remover): Automatically detect and remove silent parts from audio. Adjustable threshold, waveform preview, and export. - [Speech Restorer](https://tembrica.com/en/speech-restorer): AI-powered speech restoration that makes unintelligible audio listenable again — fixes noise, muffling, reverb, and bandwidth loss. - [Audio Speed Changer](https://tembrica.com/en/speed): Speed up or slow down audio from 0.05x to 10x without changing pitch. Perfect for practice and transcription. - [Stereo to Mono](https://tembrica.com/en/stereo-to-mono): Convert stereo audio to mono, extract left or right channel, swap L/R, or split stereo into two separate files. Browser tool. - [5.1 Surround Disc Image for Home Theatre](https://tembrica.com/en/surround-disc): Build surround audio into a DVD-Video disc with chapters, AC-3, multichannel FLAC, a DTS track or an ISO image. Online, in your browser. - [Time-Stretch to Target BPM](https://tembrica.com/en/time-stretch): Change tempo without changing pitch — no chipmunk voice - [Trim Audio](https://tembrica.com/en/trim): Provide a start time and an optional end time to cut a fragment. - [Voice Compressor](https://tembrica.com/en/voice-compressor): A studio-grade dynamics compressor that levels uneven loudness, with a gain-reduction meter, level-matched A/B and LUFS targets — all in your browser. - [Song in Your Own Voice](https://tembrica.com/en/voice-cover): Your voice sings any song. Pick a ready melody or sing it yourself — AI renders it in your timbre. The voice sample is recorded live in the browser. - [Voice Enhancer](https://tembrica.com/en/voice-enhancer): AI voice and vocal enhancement: noise reduction, de-reverb, a gentle vocal mode, an enhancement strength slider, and LUFS normalization. - [Audio Volume Changer](https://tembrica.com/en/volume): Increase or decrease volume of MP3, WAV, FLAC and other formats online. ## Voice & Speech (16) - [Audio to Text](https://tembrica.com/en/audio-to-text): Upload any audio file and get accurate text transcription with timestamps. Powered by Whisper AI — runs in your browser. - [Audio Translator](https://tembrica.com/en/audio-translator): Translate an audio recording into another language and hear it: podcasts, interviews, lectures, voice notes. Audio, transcript and subtitles out. - [Dialogue analysis and conversation protocol](https://tembrica.com/en/dialogue-analysis): Paste a conversation transcript — AI builds the protocol: participants, decisions, tasks, agreements. Every item carries a verbatim quote. - [Online Voice Recorder](https://tembrica.com/en/dictaphone): Record from microphone or system audio directly in your browser. No installation, no signup — just press record. - [Vocal Harmony Generator](https://tembrica.com/en/harmony-generator): Add natural harmony voices to any vocal in your browser — diatonic thirds, fifths, octaves and choir that keep your own voice. - [Karaoke Maker](https://tembrica.com/en/karaoke): Create karaoke versions of any song. Remove vocals, change key and tempo — sing your way. - [Megaphone Effect](https://tembrica.com/en/megaphone): Transform any voice or audio into a megaphone, bullhorn or walkie-talkie sound. - [Re-Dub](https://tembrica.com/en/redub): Upload audio or video, get an editable transcript, and re-voice it — change the speaker, switch voices line by line, or re-dub just one character. - [Speech to Text](https://tembrica.com/en/speech-to-text): Speak into your microphone and watch text appear in real time. Voice commands, auto-punctuation, 34 languages. - [Text to Speech](https://tembrica.com/en/text-to-speech): Convert text to natural speech with neural AI voices in 30+ languages. Download as MP3. - [Record Vocals](https://tembrica.com/en/vocal): Record vocal takes, comp the clips on a timeline and shape your voice with reverb, EQ and a compressor. - [Vocal Range Finder](https://tembrica.com/en/vocal-range): Sing into your microphone and discover your vocal range and voice type. Runs in your browser. - [Vocal Remover](https://tembrica.com/en/vocal-remover): Separate vocals from music using AI. Get instrumental and acapella tracks for karaoke and remixes. - [Voice Changer](https://tembrica.com/en/voice-changer): Transform your voice with 43 effects — robot, deep, chipmunk, echo and more. Record or upload audio. - [Voice Gender Changer](https://tembrica.com/en/voice-gender): Change a voice from male to female or female to male while keeping your natural delivery. Record or upload. - [Voice Translator](https://tembrica.com/en/voice-translator): Translate speech in real time between 50+ languages. ## Video (44) - [Add Music to Video](https://tembrica.com/en/add-music-to-video): Add background music, voiceover, or sound effects to any video. Multi-track timeline with live preview. - [Animated Avatar Maker](https://tembrica.com/en/animated-avatar): Create looping animated profile pictures, boomerangs, and stickers from any photo or video — with platform presets, shape masks, transparent backgrounds, and five export formats. - [Create Video from Audio](https://tembrica.com/en/audio-to-video): Upload music, a podcast, or voice recording — get a ready-made video with sound visualization, backgrounds, and text. - [Audio Visualizer](https://tembrica.com/en/audio-visualizer): Watch mesmerizing shader-based visuals that react to your voice or music in real time. - [Auto Captions](https://tembrica.com/en/auto-captions): Generate AI captions for any video — lectures, podcasts, films, social. Pick a style, edit, translate, burn into MP4. - [Digital Signage](https://tembrica.com/en/digital-signage): Digital signage: fullscreen slideshows for TVs and displays. Transitions, music, widgets. Export video for offline. - [Video Enhancer](https://tembrica.com/en/enhance-video): Improve video quality with presets or fine-tune every parameter manually. - [Face Maker](https://tembrica.com/en/face-maker): Drag the sliders to morph the head shape, set the expression and pose, then download a PNG — all in your browser. - [Music Video Maker](https://tembrica.com/en/music-video-maker): Upload a song and a few short clips — the tool mutes the clip audio, keeps your music, and cuts the montage to the beat. - [Remove Audio from Video](https://tembrica.com/en/mute-video): Remove audio from video instantly. Lossless stream copy — no quality loss. Download muted video and extracted audio separately. - [Video Profanity Remover](https://tembrica.com/en/profanity-remover-video): AI speech recognition finds swear words and mutes exactly those words by timecode - [Reels Maker](https://tembrica.com/en/reels-maker): Convert any video to vertical format for TikTok, Instagram Reels, and YouTube Shorts. - [Remove Text from Video](https://tembrica.com/en/remove-text-from-video): Erase burned-in subtitles, watermarks and logos by rebuilding the background behind them — not just blurring. - [Video Repair](https://tembrica.com/en/repair-video): Fix corrupted or broken video files — repair containers, codecs, timestamps, and recover damaged footage. - [Reverse Video](https://tembrica.com/en/reverse-video): Reverse any video with boomerang mode, speed control, trim, and GIF export. Browser-based. - [Screen Recorder](https://tembrica.com/en/screen-recorder): Record your screen, browser tab, or window directly in the browser. - [Slideshow Maker](https://tembrica.com/en/slideshow-maker): Drop multiple photos, add an audio track, pick a transition — get a finished video, slide deck or PDF in one click. - [Split Screen Video](https://tembrica.com/en/split-screen): Combine 2-4 videos into one screen. Side by side, top/bottom, PiP, grid layouts. Presets for TikTok, Instagram, YouTube. - [Subtitle Merger](https://tembrica.com/en/subtitle-merger): Merge two subtitle files into one bilingual file. - [Subtitle Translator](https://tembrica.com/en/subtitle-translator): Translate subtitle files to any language. - [Talking Avatar](https://tembrica.com/en/talking-avatar): Type a script, pick a voice, and a 3D avatar speaks it with lip-sync — then download the clip as a video. In your browser. - [Video Audio Editor](https://tembrica.com/en/video-audio): Sound processing and track operations in one place: 10-band equalizer, noise reduction, compressor, platform loudness targets, track replacement and audio extraction. The picture stays untouched. - [Video Blur](https://tembrica.com/en/video-blur): Blur faces, pixelate areas, or censor sensitive content in your video — with AI face detection, multiple blur types, and audio censoring. - [Video Colorizer](https://tembrica.com/en/video-colorize): Turn black-and-white video into color with AI, right in your browser. - [Video Compressor](https://tembrica.com/en/video-compressor): Compress video for WhatsApp, Discord, Email or set exact target size. 16 platform presets. - [Video Converter](https://tembrica.com/en/video-converter): Convert video between MP4, MKV, MOV, AVI, WebM, WMV, FLV, TS and 3GP in your browser. A container swap copies the streams instead of re-encoding. - [Video Crop & Resize](https://tembrica.com/en/video-crop): Crop, resize, and change video aspect ratio online. Vertical, square, circle crops with blur background. Browser-based, no watermark. - [Video Dubbing](https://tembrica.com/en/video-dubbing): Dub video into another language: AI speech translation, a voice cloned from the video or studio AI voices, music kept. Video, track & SRT export. - [Video Filter](https://tembrica.com/en/video-filter): Online video filter tool. Turn video black & white, add sepia, vintage or VHS effects with a live preview. No watermark, no signup. - [Video Flip & Mirror](https://tembrica.com/en/video-flip): Flip, mirror, and rotate videos online. Horizontal mirror, vertical flip, 90/180/270° rotation. Instant preview, no watermark. - [Increase Video FPS](https://tembrica.com/en/video-fps): Make video smoother via frame interpolation. FFmpeg or AI RIFE. - [Video Frames](https://tembrica.com/en/video-frames): Extract all frames from video or assemble images into video. 5 extraction modes, WebP support, ZIP download. - [Video Location Finder](https://tembrica.com/en/video-location): Extract GPS & metadata from videos. View filming location on map, extract frames. - [Video Looper](https://tembrica.com/en/video-loop): Repeat a clip N times or loop it to an exact length — lossless and instant, right in your browser. - [Merge Videos](https://tembrica.com/en/video-merge): Merge multiple videos into one with smooth transitions, per-clip editing, and lossless mode. In browser. - [Video Overlay](https://tembrica.com/en/video-overlay): Put one video on top of another: picture-in-picture, chroma key, AI person cutout and blend effects — right in your browser. - [Universal Video Player](https://tembrica.com/en/video-player): Play almost any video format in your browser — MKV, AVI, MOV, WMV, FLV, TS, HEVC and more, with subtitles, audio tracks and chapters. - [Video Speed Editor](https://tembrica.com/en/video-speed): Change video speed from 0.1x to 16x. Apply speed ramps by segments with pitch preservation — all in your browser. - [Video to VR](https://tembrica.com/en/video-to-vr): Convert any video to side-by-side format for smartphone VR headsets. Barrel distortion correction and VR metadata included. - [Trim Video](https://tembrica.com/en/video-trim): Trim and cut video files online. Visual timeline with waveform and thumbnail preview. Export to MP4, WebM. Browser-based. - [AI Video Upscaler](https://tembrica.com/en/video-upscaler): MP4, MOV, AVI, MKV, WebM — up to 1 GB - [Video Volume & Loudness](https://tembrica.com/en/video-volume): Boost or reduce video volume, or normalize to YouTube/podcast/broadcast loudness. Measures real LUFS and true peak, applies exact gain, prevents clipping — video stays untouched. - [Video Wall](https://tembrica.com/en/video-wall): Split video or image into tiles for multi-monitor video wall display. - [Webcam Recorder](https://tembrica.com/en/webcam-recorder): Record yourself on your webcam and microphone, then download the video. ## Device Testing (35) - [Battery Checker](https://tembrica.com/en/battery-checker): Free online battery checker. - [Bluetooth Audio Test](https://tembrica.com/en/bluetooth-test): Test any Bluetooth audio device: headphones, speakers, earbuds, car audio. Measure latency, check speaker channels, test mic quality. - [Camera Test](https://tembrica.com/en/camera-test): Test your webcam for resolution, FPS, sharpness, noise, lighting, and color accuracy. - [Click Speed Test](https://tembrica.com/en/click-speed-test): Measure your clicks per second with multiple modes and timers - [Codec Support Test](https://tembrica.com/en/codec-support-test): Check which audio and video codecs your browser supports — H.264, H.265, AV1, VP9, Opus, AAC, FLAC. Free, in your browser. - [CPU Benchmark](https://tembrica.com/en/cpu-benchmark): Test your processor speed with single-thread and multi-thread benchmarks - [Dead Pixel Test](https://tembrica.com/en/dead-pixel-test): Check your screen for dead, stuck, and hot pixels with 21 test patterns and built-in repair tool - [Gamepad Test](https://tembrica.com/en/gamepad-test): Test your controller buttons, sticks, triggers and vibration online - [GPU Benchmark](https://tembrica.com/en/gpu-benchmark): WebGL-based GPU benchmark that tests particles, 3D geometry, and shaders. Produces a score from 0 to 10,000. Includes stress test mode. - [Gyroscope Test](https://tembrica.com/en/gyroscope-test): Test your phone's gyroscope, accelerometer, and motion sensors. 3D visualization, spirit level, graphs, accuracy test, CSV export. - [HDR Display Test](https://tembrica.com/en/hdr-test): HDR detection, visual tests, diagnostics & scoring - [Keyboard Test](https://tembrica.com/en/keyboard-test): Test every key, detect ghosting, measure latency and typing speed - [Mic Noise Test](https://tembrica.com/en/mic-noise-test): Test your microphone for noise, identify the problem type, and get step-by-step fix instructions. - [Microphone Test](https://tembrica.com/en/mic-test): Check if your microphone works — test volume, sensitivity, noise floor, and audio quality in the browser. - [Monitor Color Test](https://tembrica.com/en/monitor-color-test): Check color accuracy, gamma, contrast, and gradients — all in the browser - [Mouse Polling Rate Test](https://tembrica.com/en/mouse-polling-rate-test): Move the cursor over the test area — the polling rate appears within a second. - [Mouse Test](https://tembrica.com/en/mouse-test): Test every mouse button, scroll wheel, and drag tracking - [Phone Benchmark](https://tembrica.com/en/phone-benchmark): Get a 0–100 score for your phone in 10 seconds — CPU, GPU, RAM, display, network, and health. - [Phone Check](https://tembrica.com/en/phone-check): Screen, touch, cameras, microphone, speakers, vibration, sensors and battery — one at a time, with a report at the end - [Phone Display Test](https://tembrica.com/en/phone-display-test): Check your phone screen for dead pixels, touch issues, backlight bleed, burn-in, and color accuracy. - [Phone Keyboard Test](https://tembrica.com/en/phone-keyboard-test): Type a phrase and we verify the output — catching autocorrect, missing letters and lag - [Printer Test](https://tembrica.com/en/printer-test): Check your printer in seconds with Quick Test or run detailed diagnostics with Professional mode. Color bars, nozzle check, grayscale, text sharpness, and more. - [Refresh Rate Test](https://tembrica.com/en/refresh-rate): Measure your monitor refresh rate with precision frame timing. Detect Hz, analyze jitter, explore display capabilities, and test motion smoothness — all in your browser. - [Screen Burn-In Test](https://tembrica.com/en/screen-burnin-test): Test your OLED or LCD screen for burn-in and image retention with fullscreen solid colors and burn-in pattern overlays. - [Speaker Cleaner](https://tembrica.com/en/speaker-cleaner): Remove water and dust from your phone speaker using calibrated sound frequencies. The same technology used by Apple Watch — now free for any device in your browser. - [Speaker & Headphone Test](https://tembrica.com/en/speaker-test): Test your speakers, headphones, or surround system right in the browser. - [Stylus Test](https://tembrica.com/en/stylus-test): Pressure, pressure steps, tilt, twist, pen buttons, report rate and latency — with the cause explained, not just numbers - [Subwoofer Test](https://tembrica.com/en/subwoofer-test): Test your subwoofer with tone generator, frequency sweeps, bass drops, diagnostics, and room mode calculator. - [Touchscreen Test](https://tembrica.com/en/touchscreen-test): Test multitouch, dead zones, ghost touches, latency and pressure sensitivity on any touchscreen device - [Typing Speed Test](https://tembrica.com/en/typing-speed-test): Measure your typing speed in words per minute with real-time accuracy tracking - [USB Drive Tester](https://tembrica.com/en/usb-drive-tester): Detect fake USB drives and verify real capacity — like h2testw, but in your browser. - [Vibration Test](https://tembrica.com/en/vibration-test): Test your device vibration motor with patterns, diagnostics, and a custom builder. - [VR Compatibility Test](https://tembrica.com/en/vr-compatibility-test): Check WebXR support, GPU, CPU, RAM, sensors and bandwidth — then see which VR headsets match your hardware - [VR Headset Test](https://tembrica.com/en/vr-headset-test): WebXR diagnostic suite for FOV, tracking, refresh rate, spatial audio and display dead pixels — runs inside your headset browser - [VR Readiness Test](https://tembrica.com/en/vr-readiness-test): Check stereo vision, motion sickness risk, IPD and find the VR headset that fits you before you buy ## Analysis (15) - [Video Analyzer](https://tembrica.com/en/analyze): Inspect any video file in your browser: codec, resolution, real bitrate, HDR, color, audio tracks and platform-readiness checks. Free. - [Audio Comparator](https://tembrica.com/en/audio-comparator): Compare two audio files side-by-side with objective metrics — LUFS, spectrum, dynamic range, ABX blind test, sample-level diff. - [Audio Forensics](https://tembrica.com/en/audio-forensics): Analyze audio for signs of editing, splicing, or AI generation. - [Audio Inspector](https://tembrica.com/en/audio-inspector): Inspect audio files for true quality — detect upsampled or re-encoded tracks by analyzing the spectrum. - [Audio Metadata Editor](https://tembrica.com/en/audio-metadata): View, edit or strip ID3 tags, cover art and comments via WebAssembly - [Audio Microscope](https://tembrica.com/en/audio-microscope): Slow any sound down to 500x without changing pitch and inspect it under a live spectrogram with note and frequency readout. - [Audio Splice Detector](https://tembrica.com/en/audio-splice-detector): Find splices, cuts and edits in audio recordings using six forensic detectors with millisecond precision. - [Audio to Notes](https://tembrica.com/en/audio-to-notes): Transcribe any audio recording into notes, MIDI, and sheet music using AI. - [Audio Watermark](https://tembrica.com/en/audio-watermark): Embed an invisible watermark in your audio to prove ownership. - [BPM & Key Finder](https://tembrica.com/en/bpm-key-finder): Upload a song to detect BPM, musical key, and Camelot notation. Includes tap-tempo for manual detection. - [Ear Trainer](https://tembrica.com/en/ear-trainer): Hearing which frequency is the problem is a skill built by repetition. Everything you need for that is here. - [Guitar Pro to MIDI](https://tembrica.com/en/guitar-pro-to-midi): Convert Guitar Pro (GP3-GP8, GPX) and MusicXML tabs to MIDI in your browser. Pick tracks, preview, and download. - [Mix Reference Analyzer](https://tembrica.com/en/mix-analyzer): Compare your mix to a reference track: LUFS, spectrum, dynamics, stereo and precise recommendations. - [Music Genre Detector](https://tembrica.com/en/music-genre-detector): Upload an audio file to identify its genre, mood, dominant instruments, BPM and musical key. - [Sheet Music to MIDI](https://tembrica.com/en/sheet-music-to-midi): Scan any score photo or PDF and hear the notes back. ## Generation (17) - [Alarm Sound Generator](https://tembrica.com/en/alarm-sound-generator): Generate alarm sounds, notification tones, and sirens. 33 presets, custom synthesizer, multiple export formats. - [Audio Scene](https://tembrica.com/en/audio-scene): Upload audio and hear how it sounds in 60+ different environments — from a cathedral to outer space. - [Binaural Beats Generator](https://tembrica.com/en/binaural-beats): Use headphones for the binaural effect to work. - [Bird Repeller](https://tembrica.com/en/bird-repeller): Generate deterrent sounds in the 1–5 kHz bird hearing range — 8 synthesized modes, species targeting, anti-habituation timer. - [Cockroach Repellent](https://tembrica.com/en/cockroach-repellent): Select a frequency mode and press START. Place the device in the room where cockroaches are active. - [Dog Repellent](https://tembrica.com/en/dog-repellent): Press the button to activate the repellent. The sound starts immediately. - [Dog Whistle](https://tembrica.com/en/dog-whistle): Choose a preset or adjust frequency manually. Press Play to start. - [Doorbell Sound Generator](https://tembrica.com/en/doorbell-sound-generator): Generate doorbell sounds, chimes, and melodies. 35 presets, custom synthesizer, melody composer, multiple export formats. - [DTMF Generator](https://tembrica.com/en/dtmf-generator): Generate and decode telephone touch-tones with ITU-T Q.23 precision — keypad, sequence player, microphone decoder, multi-region call-progress tones, WAV/MP3 export. - [Isochronic Tones](https://tembrica.com/en/isochronic-tones): Choose a preset or customize your session in Expert mode. No headphones required — works through any speaker. - [Loud Sound Generator](https://tembrica.com/en/loud-sound-generator): Play loud sounds instantly — alarms, sirens, horns, horror effects. Boost your audio files up to 400%. - [Morse Code Generator](https://tembrica.com/en/morse-generator): Convert text to Morse code with audio playback. Adjust speed and tone, download as MP3 or WAV. - [Rodent Repellent](https://tembrica.com/en/rodent-repellent): Select a target pest mode and press START. Place the device in the room with rodent activity. - [Silence Generator](https://tembrica.com/en/silence-generator): Download silent ringtones for iPhone & Android in one click. - [Tone Generator](https://tembrica.com/en/tone-generator): Generate precise audio tones, sweep frequencies, mix oscillators, play DTMF phone tones, export WAV. Web Audio API. - [Ultrasonic Generator](https://tembrica.com/en/ultrasonic): Generate ultrasonic frequencies beyond human hearing. Up to 48 kHz with 96 kHz sample rate. Real-time spectrum analyzer. - [White Noise Generator](https://tembrica.com/en/white-noise): Mix 45 ambient sounds for sleep, focus, and relaxation. Set a sleep timer, customize your mix, and export to any format. ## Games (30) - [2048](https://tembrica.com/en/2048-game): Slide tiles with arrow keys or swipe. Merge matching numbers to reach 2048! - [Air Hockey Game](https://tembrica.com/en/air-hockey-game): Free air hockey game with single player, local and online multiplayer modes, power-ups, and 4 table themes. - [Bouncy Paws](https://tembrica.com/en/bouncy-paws): A fun jumping game for kids — help a cute cat bounce from platform to platform and reach for the sky. - [Games for Cats](https://tembrica.com/en/cat-games): 10 interactive browser games designed for cats to play on tablets, phones, and screens. - [Checkers](https://tembrica.com/en/checkers): Free checkers / draughts in your browser: Russian, International (10×10) and English rules. Strong AI, pass-and-play, or online by link. No signup. - [Chess](https://tembrica.com/en/chess): Hint - [Cities Game](https://tembrica.com/en/cities-game): Name a city; the next must begin with its last letter. - [Dino Runner](https://tembrica.com/en/dino-runner): Play the classic dinosaur runner game — jump over obstacles and set your high score - [Egg Catcher](https://tembrica.com/en/egg-catcher): Browser remake of a Soviet LCD handheld. Catch eggs with the basket — don't miss any. Game A/B, 2 themes, personal records. Free. - [Flood Fill](https://tembrica.com/en/flood-fill): Fill the entire board with one color in the fewest moves possible. - [Durak](https://tembrica.com/en/fool-card-game): Play Durak (Russian Fool) online vs smart AI. 3 difficulty levels, 2-4 players, Podkidnoy and Perevodnoy variants. Free, in browser. - [Knight’s Tour](https://tembrica.com/en/knights-tour): Move the knight across every square of a 5×5–10×10 board, numbering them 1 to 100. Dead-end warnings and a solver. - [Lights Out](https://tembrica.com/en/lights-out): Toggle lights to turn them all off. Clicking a light flips it and its neighbors. - [Tangram](https://tembrica.com/en/matter): Rearrange seven shapes to match the target silhouette. Drag, rotate with R, flip parallelograms with F. - [Maze Game](https://tembrica.com/en/maze-game): Navigate procedurally generated mazes with increasing difficulty. Four modes from easy to extreme. - [Memory Game](https://tembrica.com/en/memory-game): Match card pairs to train your memory with adjustable difficulty. - [Nonogram](https://tembrica.com/en/nonogram): Use number clues to fill cells and reveal hidden pixel art pictures. 20+ puzzles from easy to hard. - [Penguin Quest](https://tembrica.com/en/penguin-quest): Steer a little penguin over cracks and ice holes, catch fish to stay warm, and journey across the frozen wild to a distant mountain. - [Pipe Puzzle](https://tembrica.com/en/pipe-puzzle): Rotate pipe segments to connect the water source to every endpoint. Tap or click to rotate. - [Pocket Pet](https://tembrica.com/en/pocket-pet): Raise a digital pocket pet that grows over weeks. Feed, clean, pet, and watch it evolve. Free, in your browser. - [Rock Paper Scissors](https://tembrica.com/en/rock-paper-scissors): Play rock paper scissors with buttons or real hand gestures on camera against an AI that learns from your moves. - [Sliding Puzzle](https://tembrica.com/en/sliding-puzzle): Slide numbered tiles into the correct order. Choose 3x3, 4x4, or 5x5 grid size. - [Snake Game](https://tembrica.com/en/snake-game): Classic Snake arcade with 4 modes, power-ups and themes. - [Sokoban](https://tembrica.com/en/sokoban): Push all boxes onto the goal markers. 155 hand-crafted levels from easy to expert. - [Tank Duel](https://tembrica.com/en/tank-duel): Turn-based artillery duel with 18 weapons, wind and destructible terrain — play vs computer, 2 players, or online. - [Tic Tac Toe](https://tembrica.com/en/tic-tac-toe): Play against smart bots or with friends by shareable link. - [Trail](https://tembrica.com/en/trail): Connect numbered points in order while filling every cell on the grid. Daily logic puzzle — free, in your browser. - [Volleyball Game](https://tembrica.com/en/volleyball-game): Free volleyball game for two players. Play against AI, together on one keyboard, or online with friends. - [Woodblocks](https://tembrica.com/en/woodblocks): Drop wooden shapes onto the grid, clear lines, and beat your record. - [World Counter](https://tembrica.com/en/world-counter): Click one button and watch a single live world counter tick upward together. Back your country in the daily click battle. Free, in your browser. ## Internet & Security (14) - [Browser Fingerprint](https://tembrica.com/en/browser-fingerprint): Real entropy bits, live cohort comparison, defense test, and visual fingerprint art — see exactly how trackable your browser is. - [Cookie Checker](https://tembrica.com/en/cookie-checker): Scan any website to discover all cookies, trackers, and privacy risks in seconds. - [DNS Lookup](https://tembrica.com/en/dns-lookup): Look up DNS records for any domain. All record types supported, results from multiple resolvers. - [IP Lookup](https://tembrica.com/en/ip-lookup): Look up any IP address or domain to see its location, ISP, VPN status, and more. - [IPv6 Test](https://tembrica.com/en/ipv6-test): Test your IPv6 support, detect connection type, compare latency, and check for leaks. - [MAC Address Lookup](https://tembrica.com/en/mac-address-lookup): Identify the manufacturer of any network device by MAC address, generate random MACs for testing, and convert between all standard formats. - [Privacy Audit](https://tembrica.com/en/privacy-audit): Run 25+ privacy and security checks on your browser. Get a score from 0 to 100 with detailed results and recommendations. - [Redirect Checker](https://tembrica.com/en/redirect-checker): Enter a URL to see the full redirect chain with HTTP status codes, response times, and server details. - [Speed Test](https://tembrica.com/en/speed-test): Measure download and upload speed, ping, jitter and latency under load (bufferbloat) in 30 seconds. - [System Diagnostics](https://tembrica.com/en/system-diagnostics): Check CPU, GPU, memory, battery, storage, network, and browser capabilities. Get a health score, run a benchmark, and receive personalized recommendations. - [VPN Checker](https://tembrica.com/en/vpn-checker): Check if your VPN is working and test for IP, DNS, and WebRTC leaks. Instant anonymity score with detailed results. - [WebRTC Leak Test](https://tembrica.com/en/webrtc-leak-test): Check if WebRTC is exposing your real IP address. Detect local, public, and mDNS candidates with real-time monitoring. - [What Is My Browser](https://tembrica.com/en/what-is-my-browser): Instantly detect your browser, OS, screen, hardware, codecs, and web API support. Copy all info for tech support or download a PDF report. - [WHOIS Lookup](https://tembrica.com/en/whois-lookup): Look up registration details for any domain name including registrar, dates, nameservers, and DNSSEC status. ## Psychology tests (6) - [Cognitive Test](https://tembrica.com/en/cognitive-test): Test attention, memory, reaction time, and spatial reasoning with instant results. - [Greed Test](https://tembrica.com/en/greed-test): Seven axes, an SVO slider and an allocation task: the test separates thrift from stinginess and compares what you say with what you choose. - [Ikigai Test](https://tembrica.com/en/ikigai-test): Find your purpose with the ikigai map: 4 directions, the validated Ikigai-9 scale, a personal diagram and a workshop. Online, no sign-up. - [IQ Test](https://tembrica.com/en/iq-test): Scientifically-designed IQ test with adaptive matrices, spatial reasoning, and pattern recognition. Get accurate IQ score with confidence interval. - [Neuro Test](https://tembrica.com/en/mental-acuity): Check your mental sharpness with 7 scientific assessments. Find out your mental age. - [Workaholism Test](https://tembrica.com/en/workaholism-test): Check yourself with the Bergen Work Addiction Scale and a 5-dimension map: compulsion, overload, the toll on life. Online, no sign-up. ## Health (27) - [ADHD Test](https://tembrica.com/en/adhd-test): Free adult ADHD test based on the WHO ASRS-v1.1. A 6-question screener with an instant result, plus the full 18-item checklist. Not a diagnosis. - [Anxiety Tracker](https://tembrica.com/en/anxiety-tracker): Track your anxiety levels, triggers, and coping strategies with visual charts. - [Autism Spectrum Test](https://tembrica.com/en/autism-test): Comprehensive autism screening with social, sensory, and masking analysis. - [BAC Calculator](https://tembrica.com/en/bac-calculator): Estimate blood alcohol content via the Widmark formula: peak BAC, sober-up time, when you can legally drive. Free, in your browser. - [Breathing Exercise](https://tembrica.com/en/breathing-exercise): Guided breathing exercises — Box Breathing, 4-7-8, Wim Hof and 5 more techniques with visual timer. - [Colorblind Camera Filter](https://tembrica.com/en/colorblind-camera): Allow camera access, choose a CVD type and mode, then see the live filter. - [Color Name Identifier](https://tembrica.com/en/colorblind-color-namer): Use your camera, upload an image, or enter a color value to identify any color. - [Colorblind-Safe Palette](https://tembrica.com/en/colorblind-palette): Generate or fix color palettes so they remain distinguishable under all forms of color vision deficiency. - [Colorblind Simulator](https://tembrica.com/en/colorblind-simulator): Upload an image to compare original and colorblind views side by side. - [Color Blind Test](https://tembrica.com/en/colorblind-test): For best results, use a screen with good color reproduction at full brightness in a well-lit room. Turn off night mode, True Tone and blue-light filters, which shift colors and can invalidate the test. - [Daily Routine](https://tembrica.com/en/daily-routine): Pick a template or build your own. Your routine follows the device clock, counts down to the next event and runs in the background. - [Dementia Screening Test](https://tembrica.com/en/dementia-test): Comprehensive cognitive screening for early detection of dementia risk. - [Depression Screening Test](https://tembrica.com/en/depression-test): Clinically validated depression screening with mood tracking, wellness toolkit, and PDF report. - [Due Date Calculator](https://tembrica.com/en/due-date-calculator): Choose a starting point and date to get your estimated due date, gestational age and trimester. - [Dyslexia Test](https://tembrica.com/en/dyslexia-test): Interactive dyslexia screening with 5 assessments and downloadable PDF report. - [Eye Test](https://tembrica.com/en/eye-test): Comprehensive vision screening with 8 tests for phone and computer. Visual acuity, near vision, astigmatism, contrast, Amsler grid and more. - [Online Hearing Test](https://tembrica.com/en/hearing-test): Online hearing test with audiometry, speech-in-noise, and gap detection. Get your audiogram and hearing age. - [Longevity Tests](https://tembrica.com/en/longevity-tests): Four tests: sitting-rising, 30-second chair stands, one-leg balance and VO₂max with a fitness age. Norms by age and sex, in your browser. - [Panic Button](https://tembrica.com/en/panic-button): Instant emergency calming tool for panic attacks with guided breathing and reassuring voice. - [PD Meter](https://tembrica.com/en/pd-meter): Take a selfie holding a bank card on your forehead, mark the card and your pupils, and read your PD for ordering glasses. - [Period calendar](https://tembrica.com/en/period-calendar): A period and ovulation calendar whose forecast shows a range instead of one date. - [Pulse](https://tembrica.com/en/pulse-meter): Put a finger on the camera and get your heart rate in 25 seconds. The number appears only when the signal is genuinely clean. - [Running Pace Calculator](https://tembrica.com/en/running-pace-calculator): Enter a distance and the time it took to get your pace, speed and predicted race finish times. - [Sensory Room](https://tembrica.com/en/sensory-room): Virtual sensory room with calming visuals and ambient sounds for self-regulation and relaxation. - [Sleep Calculator](https://tembrica.com/en/sleep-calculator): Free sleep cycle calculator: best bedtime to wake up rested, or when to wake if you sleep now. Age-based targets, nap timer, 90-min cycles. - [Snoring Monitor](https://tembrica.com/en/snoring-monitor): Records and analyzes snoring through your microphone. Get a morning report with Snore Score, loud episodes and trends. - [Tinnitus Test](https://tembrica.com/en/tinnitus-test): Free tinnitus test: match the frequency of your ringing, find masking noise that covers it, and check the impact. Headphones recommended. ## Measuring (10) - [Angle Finder](https://tembrica.com/en/angle-finder): A digital inclinometer that reads tilt in degrees, percent, per-mille and roof pitch — plus a clinometer mode for the height of trees and buildings. - [Bubble Level](https://tembrica.com/en/bubble-level): Digital spirit level using your phone's sensors — 2D surface bubble, inclinometer, plumb line and camera AR with angle export. - [Compass](https://tembrica.com/en/compass): Browser compass with true north corrected for declination, bearing hold, a sighting mode and an honest accuracy figure. - [Elevation](https://tembrica.com/en/elevation): Find the elevation at any point on a map, build a profile along a route and get the slope in percent and degrees. Coordinates next to the height. - [GPS Speedometer](https://tembrica.com/en/gps-speedometer): See your real speed from GPS: max, average, distance and track export. Check what your dashboard reads against true speed. No install. - [Light Detector](https://tembrica.com/en/light-detector): Press Start Camera to activate your camera. The tool will convert light levels into audio tones. - [Online Ruler](https://tembrica.com/en/online-ruler): Free online ruler in actual size. Calibrate to your screen and measure in cm, mm and inches — on screen or on a photo. - [Online Protractor](https://tembrica.com/en/protractor): Online protractor with transparent overlay and photo measurement — mm calibration, multi-angle, PNG/PDF/JSON export. Handy for builders, carpenters and students. - [Sound Level Meter](https://tembrica.com/en/sound-meter): Measure noise levels in decibels using your device microphone. Free, private. - [RPM Meter](https://tembrica.com/en/tachometer): Five ways to read rotation speed: by sound, by a marker in the camera, by the phone's gyroscope, by screen strobe and by a printable strobe disc. Plus lamp flicker and PWM. ## Musical instruments (10) - [Acoustic Guitar](https://tembrica.com/en/acoustic-guitar): Play acoustic guitar with realistic sound synthesis. 70+ chords, strum and arpeggio modes, 5 tunings, recording. - [Endless Piano](https://tembrica.com/en/endless-piano): Press Play and enjoy endless, ever-changing piano melodies. - [Virtual Flute](https://tembrica.com/en/flute): A realistic virtual flute you play in the browser — six flute types, a live Boehm fingering chart, breath and vibrato control, MIDI and recording. - [Guitar Tuner](https://tembrica.com/en/guitar-tuner): Microphone-based guitar tuner with real-time pitch detection. 6 tunings, A4 reference, ±1 cent accuracy. - [Kalimba](https://tembrica.com/en/kalimba-online): Virtual kalimba with step sequencer, 8-track looper, reverb, delay, Web MIDI in and song library. - [Beat Maker](https://tembrica.com/en/music-sequencer): Online beat maker with 808/909 drum kits, effects, velocity, MIDI export. - [Online Piano](https://tembrica.com/en/online-piano): Interactive 88-key virtual piano with 5 voices, MIDI input, recording, learn mode, and chord/scale assistance. Free, no signup. - [Virtual Organ](https://tembrica.com/en/organ): A dual-engine virtual organ: tonewheel Hammond with drawbars, Leslie and percussion, plus a pipe/church organ with stops and cathedral reverb. - [Piano Tuner](https://tembrica.com/en/piano-tuner): Strobe tuner that measures string inharmonicity and builds your piano's stretched curve. 88 keys, unisons, interval checks. - [Virtual Drums](https://tembrica.com/en/virtual-drums): A live-playable drum kit with WebMIDI, recording, metronome, grooves and lessons — no signup. ## Handy Tools (13) - [Calendar](https://tembrica.com/en/calendar): Calendar with tasks and repeating entries. Week, month, list. Subscribe from Google or Apple, publish your schedule on your profile. - [Solid Color Screen](https://tembrica.com/en/color-screen): Fill your entire display with any solid color — presets, HEX/RGB/HSL, brightness, color temperature, and one-click edge-to-edge fullscreen. - [Bluetooth Keep Alive](https://tembrica.com/en/connection-keeper): Prevent your Bluetooth speakers, headphones, car audio, and hearing aids from disconnecting. An inaudible keep-alive signal stops Bluetooth timeout. - [E-bike Registry](https://tembrica.com/en/ebike-registry): Register your e-bike for a free ownership passport, or check a frame number against the stolen-bike registry before you buy. Free. - [Morse Code Decoder](https://tembrica.com/en/morse-decoder): Decode Morse code from audio — record from microphone or upload a file. Real-time analysis to text. - [Online Flash](https://tembrica.com/en/online-flash): Turn your screen into a flashlight — with strobe, SOS, Morse code, countdown flash, and ambient lamp modes. - [Online Mirror](https://tembrica.com/en/online-mirror): Free online mirror using your camera. - [Pet Name Generator](https://tembrica.com/en/pet-names): Browse 1400+ curated names for dogs, cats, parrots, hamsters, rabbits, fish, turtles, horses, reptiles, ferrets, guinea pigs and birds — filter by gender, style, popularity and length. - [Random Number Generator](https://tembrica.com/en/random-number): Generate random numbers, roll dice, flip coins, pick from lists, create passwords. Crypto-secure, instant, free. - [Random Word Generator](https://tembrica.com/en/random-word): Generate random words, letters and ideas for games, writing prompts and brainstorming. Instant and free. - [Keep Screen On](https://tembrica.com/en/screen-awake): Keep your screen on and prevent your device from sleeping — works right in your browser, no installation needed. - [Tally Counter](https://tembrica.com/en/tally-counter): Count events with one tap: people at the door, knitting rows, training laps. Several categories at once, step, target, undo, pace and CSV export. - [Ticket Generator](https://tembrica.com/en/ticket-generator): Build numbered event tickets with QR codes, print up to thousands at once, then scan them at the door to check guests in. Free, in your browser. ## Accessibility (19) - [Audio Compass](https://tembrica.com/en/audio-compass): Navigate by sound with a 3D spatial audio compass. - [Audio to Vibration](https://tembrica.com/en/audio-to-vibration): Turn music into phone vibration in time with the beat. - [Camera Text Reader](https://tembrica.com/en/camera-reader): Point your camera at text or upload a photo — the tool recognizes it and reads it aloud. - [Color Accessibility Checker](https://tembrica.com/en/color-accessibility-checker): Pick two colors to check contrast ratio and colorblind visibility. - [Color Reader](https://tembrica.com/en/color-reader): Allow camera access to begin. The tool reads the color at the center of the screen. - [Communication Board](https://tembrica.com/en/communication-board): AAC symbol board with text-to-speech for nonverbal communication. - [Document Reader](https://tembrica.com/en/document-reader): Upload a PDF, DOCX or TXT and listen to it as an audiobook — with bookmarks, sleep timer and sentence-by-sentence navigation. - [Dyslexia Reader](https://tembrica.com/en/dyslexia-reader): Customizable reading aid with dyslexia fonts, spacing, focus cues, overlays and text-to-speech. - [Fingerspelling Practice](https://tembrica.com/en/fingerspelling-practice): Practice fingerspelling in 8 sign languages with interactive quizzes and hand shape diagrams. - [Image to Sound](https://tembrica.com/en/image-to-sound): Turn images into musical melodies or pure spectrogram sound. - [Live Captions](https://tembrica.com/en/live-captions): Free live captions in your browser. See speech as text in real time. - [One-Hand Keyboard](https://tembrica.com/en/one-hand-keyboard): Virtual keyboard optimized for single-hand typing with large keys and word prediction. - [Ramp Slope Calculator](https://tembrica.com/en/ramp-slope-calculator): Enter the rise to climb and pick a slope ratio to get the ramp length, run, slope percent and angle. - [Reading Ruler](https://tembrica.com/en/reading-ruler): Visual reading ruler and color overlay to help with dyslexia and visual stress. - [Sign Language Dictionary](https://tembrica.com/en/sign-language-dictionary): Search and learn sign language visually. - [Sound Alert](https://tembrica.com/en/sound-alert): Monitor loud sounds remotely. - [Speech Pacer](https://tembrica.com/en/speech-pacer): Visual metronome for speech pacing with breathing coordination and recording. - [Visual Schedule](https://tembrica.com/en/visual-schedule): Visual daily schedule with icons, timers, and transition alerts for autism and ADHD. - [Voice Navigator](https://tembrica.com/en/voice-navigator): Control this page with voice commands: scroll, click, go back, and more. ## For Gamers (5) - [Aim Trainer](https://tembrica.com/en/aim-trainer): Practice your mouse aim with 4 game modes and difficulty levels - [Gaming PC Scanner](https://tembrica.com/en/gaming-pc-scanner): Scan your PC hardware and get a gaming readiness score with recommendations. - [Gaming Ping Test](https://tembrica.com/en/gaming-ping-test): Measure your network latency to game server regions worldwide - [Input Lag Test](https://tembrica.com/en/input-lag-test): Measure the delay from mouse click or key press to visual response with detailed lag breakdown. - [Reaction Time Test](https://tembrica.com/en/reaction-time-test): Measure your reaction speed in visual, audio, and reflex modes with millisecond precision. ## Clocks & Time (18) - [Age Calculator](https://tembrica.com/en/age-calculator): Free age calculator: your exact age in years, months, days, hours, minutes, seconds — plus next birthday countdown. Free, in-browser. - [Online Chess Clock](https://tembrica.com/en/chess-clock): Free chess clock for two players on one device — Bullet, Blitz, Rapid, Classical with Fischer, Bronstein and delay modes. - [Countdown to Date](https://tembrica.com/en/countdown-to-date): Live countdown timer to any date with themes, full-screen and shareable link - [Date Difference Calculator](https://tembrica.com/en/date-difference-calculator): Days between two dates, business days and holidays - [Days Without Incidents](https://tembrica.com/en/days-without-incidents): Count days since the last incident, track your record, and show it full-screen, in print or by link. - [Hourglass Timer](https://tembrica.com/en/hourglass-timer): Set a duration and watch the sand run through the glass. - [Hours Calculator](https://tembrica.com/en/hours-calculator): Free work-hours calculator: enter shifts with start, end and breaks, get weekly totals, overtime and pay. Export CSV. Free, in-browser. - [How Many Days Have I Lived](https://tembrica.com/en/how-many-days-alive): See exactly how many days you have lived since birth — with weeks, hours, a live counter, milestone dates and your life in weeks. Free. - [Julian ↔ Gregorian](https://tembrica.com/en/julian-gregorian-converter): Convert dates between Julian (old style) and Gregorian (new style) calendars. Automatic shift per era, Orthodox feasts, Easter dates. Free. - [Kitchen Timer](https://tembrica.com/en/kitchen-timer): Set multiple cooking timers with preset recipes and sound alerts. - [Military Time Converter](https://tembrica.com/en/military-time-converter): Convert between 24-hour military time and 12-hour AM/PM format with live sync, batch mode and reference chart. - [Moment of Silence](https://tembrica.com/en/moment-of-silence): Light a virtual candle and observe a moment of silence to honor someone's memory. Timer, ambient sounds, personalization. - [Online Alarm Clock](https://tembrica.com/en/online-alarm-clock): Free online alarm clock with timer, stopwatch, Pomodoro, and world clock. 12 alarm sounds, math puzzle dismiss, screen awake. - [Online Clock](https://tembrica.com/en/online-clock): Six clock types with educational guides and timezone support. - [Online Timer](https://tembrica.com/en/online-timer): Free online timer: run several labeled countdowns at once, plus Pomodoro and HIIT interval modes, fullscreen, and alarm sounds. - [Online Stopwatch](https://tembrica.com/en/stopwatch): Precise online stopwatch with laps, splits, sparkline and shareable link - [Time Blindness Helper](https://tembrica.com/en/time-blindness-helper): Visual time awareness tool with color-coded countdowns for ADHD time blindness. - [Unix Timestamp Converter](https://tembrica.com/en/unix-timestamp-converter): Convert Unix timestamps to ISO 8601, UTC, RFC 2822 and relative time, or any date back to epoch seconds. Batch mode and live counter. Free. ## Electronics (16) - [555 Timer Calculator](https://tembrica.com/en/555-timer-calculator): Calculate NE555 timer circuits — astable and monostable modes. Frequency, duty cycle, waveform preview, and reverse component calculation. - [Battery Identifier](https://tembrica.com/en/battery-identifier): Measure a battery on your calibrated screen, or print a true-to-size gauge — then read which battery it is. - [Breadboard Simulator](https://tembrica.com/en/breadboard-simulator): A virtual solderless breadboard: plug parts into holes, run jumpers — the circuit really computes. - [Capacitor Code Decoder](https://tembrica.com/en/capacitor-decoder): Decode 3-digit capacitor markings to pF/nF/µF or find the code from a capacitance value. Voltage ratings, tolerance codes, unit converter. - [Circuit Simulator](https://tembrica.com/en/circuit-simulator): Build and simulate electronic circuits in your browser. Drag-and-drop components, draw wires, real-time voltage and current readouts. - [LED Resistor Calculator](https://tembrica.com/en/led-calculator): Calculate the current-limiting resistor for any LED circuit. Color presets, series/parallel arrays, power warnings, nearest E24 value. - [Ohms Law Calculator](https://tembrica.com/en/ohms-law-calculator): Calculate voltage, current, resistance, and power instantly. Interactive Ohm's Law wheel, animated circuit diagram, and practical presets. - [PCB Trace Width Calculator](https://tembrica.com/en/pcb-trace-calculator): Calculate minimum PCB trace width for a given current using IPC-2221 standard. Supports internal/external layers, multiple copper weights, and voltage drop. - [Perfboard Layout](https://tembrica.com/en/perfboard-simulator): Lay parts out on a solder board, draw the traces and check the circuit before you pick up the iron. - [RC Circuit Calculator](https://tembrica.com/en/rc-calculator): Time constant τ = RC, capacitor charge and discharge by τ steps, RC filter cutoff frequency and the charge curve. - [Delay-line reservoir computing](https://tembrica.com/en/reservoir-computing): Move the feedback gain and watch the reservoir’s memory change. - [Resistor Color Code Calculator](https://tembrica.com/en/resistor-calculator): Decode resistor color bands or find band colors by resistance value. Interactive SVG, 4/5/6 bands, tolerance range, E-series matching. - [SMD Code Decoder](https://tembrica.com/en/smd-decoder): Decode SMD component markings — 3-digit, 4-digit, and EIA-96 codes for resistors and capacitors. Reverse lookup and package size reference. - [Base Resistor Calculator](https://tembrica.com/en/transistor-base-calculator): Base resistor for a transistor switch: base current with a saturation margin, E24 value rounded down and resistor power. - [Voltage Divider Calculator](https://tembrica.com/en/voltage-divider-calculator): Calculate voltage divider output, find R1/R2 from desired Vout, E24 matching, load effects, tolerance analysis, and power dissipation. - [Wire Gauge Calculator (AWG)](https://tembrica.com/en/wire-gauge-calculator): Find the right wire gauge for your project. AWG↔mm² converter, voltage drop calculator, ampacity tables, copper and aluminum support. ## GIF Animation (7) - [Add Audio to GIF](https://tembrica.com/en/gif-audio): Add music or sound effects to any GIF. Convert to MP4/WebM with audio. Waveform editor, trim, fade in/out, sync modes. No watermark. - [GIF Compressor](https://tembrica.com/en/gif-compressor): Online GIF compressor. - [GIF Speed](https://tembrica.com/en/gif-speed): A tool for changing the pace of an animated GIF with per-frame precision. - [GIF to Video](https://tembrica.com/en/gif-to-video): Turn any animated GIF into MP4, WebM or APNG directly in your browser. Platform presets, target-size mode, loop-to-duration, boomerang, transparent background fill. - [Trim GIF](https://tembrica.com/en/gif-trim): Online GIF trimmer with frame-level precision and automatic loop detection. - [GIF from Photos](https://tembrica.com/en/photo-to-gif): Drop your photos in — drag to reorder, and each frame gets its own duration. Animated GIFs are split into their frames and joined. - [Video to GIF](https://tembrica.com/en/video-to-gif): Convert video to animated GIF. ## Images (19) - [HEIC to JPG Converter](https://tembrica.com/en/heic-converter): Convert iPhone HEIC photos to JPG, PNG, or WebP. Batch conversion, auto-rename, quality control. - [Image Metadata Editor](https://tembrica.com/en/image-metadata): View, edit or remove EXIF, IPTC, XMP and GPS data from your photos - [Document photo](https://tembrica.com/en/passport-photo): Upload a front-facing portrait — your face is fitted to the size of the document you pick. - [Photo Colorizer](https://tembrica.com/en/photo-colorize): Turn old black-and-white photos into colour with AI, right in your browser. - [Verify Photo Credentials](https://tembrica.com/en/photo-credentials-verify): Drop a JPEG signed by Tembrica Photo Watermark — verify the signature. - [AI Photo Enhancer & Upscaler](https://tembrica.com/en/photo-enhancer): AI ×4 upscaling, a print-fit calculator with dpi stamping, plus optional sharpen, contrast and saturation. All in your browser. - [Photo Location Finder](https://tembrica.com/en/photo-location): Extract GPS & metadata from photos. View location on map, strip data for privacy. - [Photo Repair](https://tembrica.com/en/photo-repair): Diagnose JPEG corruption, repair file headers, denoise old scans and recover photos that won't open. - [Old Photo Restoration](https://tembrica.com/en/photo-restore): Restores blurry and damaged faces on old snapshots: the neural network brings eyes and facial features back into focus, while auto-tone revives faded shades. Try the before/after examples in one click — no file needed. - [Photo Watermark](https://tembrica.com/en/photo-watermark): Stamp text, logo, or diagonal tiles on a single photo or a whole batch — with optional Content Credentials. - [PSD viewer](https://tembrica.com/en/psd-open): Drop the .psd or .psb file — a layered document is fine. - [Metadata Remover](https://tembrica.com/en/remove-metadata): Strip capture coordinates, camera serial numbers, dates and hidden payloads from your photos — one at a time or in bulk - [Screenshot Tool](https://tembrica.com/en/screenshot): Capture your screen, paste from clipboard, or upload an image — annotate, crop, blur and export. - [Screenshot Beautifier](https://tembrica.com/en/screenshot-beautify): Add device or browser frames, gradient backgrounds, shadows and rounded corners to screenshots. Razor-sharp 2x/4x PNG export. In your browser. - [Social Media Photo Resizer](https://tembrica.com/en/social-photo-resize): Resize photos for 12 social platforms — Instagram, TikTok, Facebook, YouTube, and more. Smart crop, blur background, batch download as ZIP. - [Takeout photo dates](https://tembrica.com/en/takeout-dates): Drop the photos together with their json files from the Google export. - [Text Behind Image](https://tembrica.com/en/text-behind-image): Put text behind a person or object in photos and video: AI cuts out the subject so the words sit behind it. Fonts, gradients, outlines. - [Thumbnail Maker](https://tembrica.com/en/thumbnail-maker): Design click-worthy thumbnails and video covers — bold outline text, photos, presets, photo tweaks and a true-resolution export, all in your browser. - [WEBP to JPG Converter](https://tembrica.com/en/webp-to-jpg): Convert WEBP images to JPG right in your browser: batch, transparency background choice and quality control. Animated WEBP exports every frame. ## Projectors (22) - [AV Sync (Lip Sync) Test](https://tembrica.com/en/av-sync-test): Synchronised flash + click. Record on your phone, count frames between flash and audio peak, multiply by 16.7 ms. - [Bias Light Calculator](https://tembrica.com/en/bias-light-calculator): Calculates LED strip length, recommended brightness, and the right colour temperature for the bias light behind your screen. - [Presentation Countdown](https://tembrica.com/en/presentation-countdown): Pick a duration, press Start. Huge digits fill the projector — readable from anywhere in the room. Beeps at countdown < 10 s and at zero. - [Projector 3D Test](https://tembrica.com/en/projector-3d-test): Five test patterns for 3D projector calibration: anaglyph, L/R separation, depth, crosstalk, convergence. Wear your 3D glasses (red-cyan or active shutter). - [Projector Camera Analyzer](https://tembrica.com/en/projector-camera-analyzer): Point your phone camera at the projected image. Get live RGB histogram, white balance check, 9-zone uniformity score, and clipping detection. - [Projector Color Temperature Test](https://tembrica.com/en/projector-color-temp-test): Eight calibration points from warm 2700K tungsten through D65 daylight to 9300K cool. Fullscreen with keyboard nav. - [Projector Edge Blending](https://tembrica.com/en/projector-edge-blending): Soft-edge gradient overlap pattern for multi-projector setups. Adjustable overlap percentage, gamma-correct ramp, four edges. - [Projector Focus Test](https://tembrica.com/en/projector-focus-test): Five focus patterns to lock perfect sharpness on any projector. Fullscreen, keyboard and swipe nav. - [Projector Gamma Test](https://tembrica.com/en/projector-gamma-test): Side-by-side gamma reference patterns for 1.8, 2.2, 2.4 and BT.1886. The 1px-stripe half should blend with the reference grey at correct gamma. - [Projector HDR Test](https://tembrica.com/en/projector-hdr-test): PQ-encoded test patterns for HDR projectors: nit-step ramp, clipping check at 800–1500 nits, near-black detail, peak-white reference, Rec.709 vs Rec.2020 gamut comparison. - [Projector Keystone Alignment Grid](https://tembrica.com/en/projector-keystone-grid): Adjustable fullscreen grid with edge markers for keystone, lens shift and geometry calibration. - [Projector Lumens Calculator](https://tembrica.com/en/projector-lumens-calculator): Get the recommended ANSI lumens for your screen size, room lighting and content type (SDR/HDR). - [Projector Noise Meter](https://tembrica.com/en/projector-noise-meter): Microphone-based sound-level meter with A-weighting. Place phone 1 m from projector, press Start, get peak/avg/min readings. - [Projector Screen Size Calculator](https://tembrica.com/en/projector-screen-calculator): Diagonal to width × height for any aspect ratio, plus optimal viewing distance per THX (36°) and SMPTE (30°). - [Projector TCO Calculator](https://tembrica.com/en/projector-tco-calculator): Total cost of ownership over the period you choose: purchase + replacement lamps + electricity. Reveals whether a lamp or laser projector saves money for your usage. - [Projector Test Patterns](https://tembrica.com/en/projector-test): Focus, color, geometry, contrast and convergence patterns. Control from your phone via QR code. - [Projector Throw Distance Calculator](https://tembrica.com/en/projector-throw-distance): Find the right placement for any projector. Works with raw throw ratio — no model lookup required. - [Projector vs TV](https://tembrica.com/en/projector-vs-tv): Tell us your budget, room and use case. Get a clear recommendation with a side-by-side comparison. - [Projector Warmup / Run-In](https://tembrica.com/en/projector-warmup-cycle): Auto-cycles colour fields, gradients and motion patterns for the duration you set. Helps equalise panels on a new LCD or DLP projector. - [DIY Screen Paint Calculator](https://tembrica.com/en/screen-paint-calculator): Specifies the right grey paint (Behr or Sherwin-Williams) for your room lighting and calculates how much paint, primer and pearl additive you need. - [Speaker Positioning Guide](https://tembrica.com/en/speaker-positioning-guide): Top-down diagrams for each system. Shows correct angles per Dolby/THX standards: front 30°, surround 90–110°, rear 150°, height ±45° elevation. - [Viewing Distance Calculator](https://tembrica.com/en/viewing-distance-calculator): Resolution-aware calculator. Tells you minimum, optimal and maximum seating distance for your screen — 4K lets you sit closer than 1080p. ## Passwords & Secrets (15) - [Bitwarden Converter](https://tembrica.com/en/bitwarden-converter): Convert password vault exports between Bitwarden JSON, KeePass, Chrome, Firefox, 1Password and LastPass CSV. Runs in your browser, no installation. - [KeePass Viewer](https://tembrica.com/en/keepass-viewer): Open a KeePass .kdbx database in your browser. View entries, export to JSON / CSV, no installation. KDBX4 and KDBX3 supported. - [One-Time Secret Share](https://tembrica.com/en/one-time-secret-share): Share a secret via an encrypted link. AES-GCM 256-bit, decryption key lives in the URL fragment. No account, no database. - [OTP Auth QR Decoder](https://tembrica.com/en/otpauth-qr-decoder): Decode a Google Authenticator / Authy QR screenshot back into its TOTP secret. Migrate to Aegis, 1Password or any other app. Runs in your browser. - [Passphrase Generator](https://tembrica.com/en/passphrase-generator): Memorable passphrase generator using diceware-style word selection. 2048-word list, configurable separators, capitalization, and live entropy. - [Password Audit](https://tembrica.com/en/password-audit): Audit an exported password vault (Bitwarden, KeePass, Chrome, Firefox, 1Password). Flags weak, reused and breached passwords using HIBP k-anonymity. - [Password Breach Checker](https://tembrica.com/en/password-breach-checker): Check if your password appears in known data breaches using Have I Been Pwned's k-anonymity API. Fast, free, no account needed. - [Password Generator](https://tembrica.com/en/password-generator): Password generator with strength meter, pronounceable mode, pattern syntax, bulk export. Cryptographically secure via Web Crypto API. - [Password Strength Checker](https://tembrica.com/en/password-strength-checker): Test your password strength with Dropbox's zxcvbn engine. Real entropy estimate, crack-time scenarios and dictionary-attack warnings. - [PGP Key Generator](https://tembrica.com/en/pgp-keygen): Generate PGP / OpenPGP keys (RSA, Curve25519) in your browser. Encrypt, decrypt, sign and verify. Works with GnuPG, Thunderbird, ProtonMail. - [Secret Language](https://tembrica.com/en/secret-language): Type a secret, get innocent-looking text to send anywhere; paste it back to recover the exact message. - [Secret Vault](https://tembrica.com/en/secret-vault): Encrypted diary, password manager and file safe — AES-256-GCM encryption in your browser via Web Crypto API. - [Shamir Secret Sharing](https://tembrica.com/en/shamir-secret-sharing): Split a secret into N shares where any K of them reconstruct it. Browser implementation over GF(256) for master passwords and seed phrases. - [Steganography](https://tembrica.com/en/steganography): Hide secret text, files, or images inside pictures using LSB steganography. Optional AES-256 encryption. - [TOTP Generator](https://tembrica.com/en/totp-generator): Generate TOTP secrets for two-factor authentication. Live 6-digit code, QR for Google Authenticator / Authy / Aegis, RFC 6238 compliant. ## Calls & sharing (7) - [File Transfer](https://tembrica.com/en/file-transfer): Drop a file or folder, share the 6-letter code or QR — the transfer flows directly between browsers. - [Remote Audio Monitor](https://tembrica.com/en/live-audio): Listen to a microphone on another device live — a remote audio monitor for a room, office, workshop or any space. Also streams files and tabs. - [Live Location Sharing](https://tembrica.com/en/live-location): Share your live location with people on a map, in real time — right in the browser, no app. - [Private Chat](https://tembrica.com/en/private-chat): Encrypted, no signup, peer-to-peer — share a link and chat privately. - [Screen Sharing](https://tembrica.com/en/screen-share): Share your screen with anyone via a link or 6-letter code. No camera, optional voice, nothing to install. - [Share Location](https://tembrica.com/en/share-location): Find, view, and share your GPS location with an interactive map and compass. - [Walkie-Talkie](https://tembrica.com/en/walkie-talkie): Push-to-talk voice chat in your browser. Create a channel, share the code, and talk in groups. ## Detectors (4) - [AI Audio Detector](https://tembrica.com/en/ai-detector): Upload an audio file to detect AI-generated content. 12 acoustic methods + opt-in deep stem analysis. - [Audio Logger](https://tembrica.com/en/audio-logger): Record audio continuously for hours. - [Baby Monitor](https://tembrica.com/en/baby-monitor): Turn two devices into a baby monitor with cry detection, lullabies, and two-way talk. P2P encrypted. - [Video Surveillance](https://tembrica.com/en/video-surveillance): AI security camera (people, pets, vehicles) or analyse an existing recording by timestamp. P2P, in your browser. ## Developer Tools (18) - [Base64](https://tembrica.com/en/base64): Encode and decode Base64 in the browser. UTF-8 safe, URL-safe variant, file uploads. Auto-detect direction. Free. - [Checksum Calculator](https://tembrica.com/en/checksum-calculator): Hash any file with 6 algorithms. Verify downloads, compare files, find duplicates. - [Cron Parser](https://tembrica.com/en/cron-parser): Parse and explain cron expressions. See the next 10 run times in your timezone, with human-readable description and field breakdown. - [Font converter](https://tembrica.com/en/font-converter): Convert TTF, OTF, WOFF and WOFF2 in any direction, subset by language, pin variable axes and repair vertical metrics. Runs in the browser. - [Hash Generator](https://tembrica.com/en/hash-generator): Calculate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes for text or files in your browser. HMAC, hex or base64. - [Hash Identifier](https://tembrica.com/en/hash-identifier): Identify the algorithm behind any hash: MD5, SHA-256, bcrypt, Argon2, NTLM and 50+ more. Ranked matches with hashcat & John modes. Free. - [HTML Formatter](https://tembrica.com/en/html-formatter): Beautify or minify HTML in your browser. Indent options, comment removal, void-element handling, preserves 
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