Sitemap — Page 6

World statistics update live: population, environment, energy, technology, economy.

Interactive 3D Earth globe with real-time day & night, sun position, country search and live ISS tracking. Free, in your browser.

Moon phase now, lunar day counted from moonrise at your location, rise and set, distance and a phase calendar. 3D globe with real libration.

Interactive Solar System model: planets in their real positions now, today’s distance to Mars, planetary alignments and your weight on each planet.

Upcoming solar and lunar eclipses: path of totality on a map, start and maximum times for your city, how much of the Sun is covered and its altitude.

Live Kp index, geomagnetic storm level, solar wind and the aurora forecast on a map. See if the northern lights are visible tonight.

Live aurora oval map plus a straight answer on whether the northern lights are visible from your spot tonight: darkness, cloud, moon, Kp.

Trace a plot on the map and get its area on the WGS84 ellipsoid — in hectares or acres — not the area of the picture on screen.

A live map of recent earthquakes worldwide from USGS and EMSC — magnitude, depth and time for each quake, updated continuously. Free.

See how hard a given magnitude shakes your city: intensity contours on a real map, a synthetic seismogram and building response. Runs in the browser.

Wind force in numbers: the full Beaufort table, the Saffir-Simpson categories, and what wind a hurricane would deliver to your city.

A live map of active wildfire hotspots worldwide from NASA satellites — heat detections from the last 24 hours, ranked by fire power. Free.

Live lightning map from satellite data: see where storms are striking now, how far the nearest one is from you and which way it is moving. Online.

Track satellites live on a map, see Starlink, and find out when the ISS will pass over your location — propagated in your browser. Free.

Find sunrise, sunset, golden hour, day length and the moon phase for any location, with live sun and moon directions on a map. Free.

See the next meteor shower, a live peak countdown, and whether the radiant is up, the sky dark and the moon out of the way for your location. Free.

See light pollution on a map and tap anywhere for the exact night-sky brightness in mag/arcsec² — find the darkest skies near you. Free.

Watch live animated wind across the globe from the GFS model — wind speed and direction anywhere, with a reading for your own location. Free.

Hourly and 9-day weather from two independent forecast models at once — with the disagreement between them shown, not hidden.

Scan your PC hardware and get a gaming readiness score with recommendations.

Measure your reaction speed in visual, audio, and reflex modes with millisecond precision.

Practice your mouse aim in 2D and in 3D with your game sensitivity

Measure your network latency to game server regions worldwide

Measure the delay from mouse click or key press to visual response with detailed lag breakdown.

Live audio effects and processing

Open this page on the computer, point your phone camera at the code — and the phone microphone starts feeding the computer browser.

Open a PDF on your computer, point your phone at the QR code, and change slides while you see your notes, the next slide and the timer.

Browser-based walkie-talkie communication

Find, view, and share your GPS location with an interactive map and compass.

Share your live location with people on a map, in real time — right in the browser, no app.

A members-only chat for Premium holders: talking to each other, tips, questions and ideas for the site.

Encrypted, no signup, peer-to-peer — share a link and chat privately.

Drop a file or folder, share the 8-character code or QR — the transfer runs between the two browsers.

Share your screen with anyone via a link or 6-letter code. No camera, optional voice, nothing to install.

Turn English text into IPA phonetic transcription: context-aware readings, weak forms, stress and syllables, British and American.

How any English word, phrase or song is read aloud: simple phonetic spelling with stress, IPA, British and American audio, text from a photo.

Count the syllables in any English word or text. Dictionary-accurate, with a poetry mode for haiku. Free, in your browser.

Shows the main stress of each phrase, its thought groups and weak forms. Move the stress to any word, or record yourself and compare the rhythm.

Find which syllable to stress in any English word. Shows the stressed syllable, IPA and noun/verb pairs like REcord vs reCORD. Free, in your browser.

Train your ear on tricky English sounds — ship vs sheep, light vs right. A minimal pairs listening drill, in your browser.

Drop in an .srt and see how much of the dialogue you would follow, and which words to learn before you press play.

Estimate how many English words you know. A quick, science-based vocabulary size test with a CEFR estimate. Free, no sign-up.

Paste a word list and build a real Anki .apkg deck — with IPA, audio and a built-in study mode. Free, in your browser.

A new English word each day with translation, meaning, examples and audio. Save and review words with spaced repetition. Free, in your browser.

Type a word — level, transcription and pronunciation fill themselves in. The card returns the day you start forgetting it, scheduled by FSRS.

Listen to graded English sentences and type what you hear. Word-by-word error highlighting, A1–C2 levels, adjustable speed. Free, in the browser.

Hear an English word and spell it. Four difficulty tiers, example sentences, letter-by-letter error marking and a streak counter. Free.

Hold the vowel like a long, steady note — don't say the consonants around it. Record somewhere quiet for the clearest reading.

Practice language shadowing with audio prompts

Adaptive English level test: vocabulary, grammar, reading and listening. Get your CEFR level with IELTS and TOEFL equivalents. Online, no signup.

Convert between CEFR, IELTS and TOEFL levels

Generate gap-fill exercises from any text

Practice English irregular verbs

Practice English phrasal verbs

Practice English word collocations

Spot false-friend words across languages

Timer for IELTS Speaking Parts 1, 2 and 3

Learn English grammar by CEFR level A1–C2. Free course with clear lessons, exercises and progress tracking, in your browser.

IELTS Writing band score for Task 2 essays, Task 1 charts and letters: four criteria with quotes from your text, fixes and a Band 9 version. Online.

Focus, color, geometry, contrast and convergence patterns. Control from your phone via QR code.

Find the right placement for any projector. Works with raw throw ratio — no model lookup required.

Diagonal to width × height for any aspect ratio, plus optimal viewing distance per THX (36°) and SMPTE (30°).

Five focus patterns to lock perfect sharpness on any projector. Fullscreen, keyboard and swipe nav.

Adjustable fullscreen grid with edge markers for keystone, lens shift and geometry calibration.

Get the recommended ANSI lumens for your screen size, room lighting and content type (SDR/HDR).

Eight calibration points from warm 2700K tungsten through D65 daylight to 9300K cool. Fullscreen with keyboard nav.

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 gray at correct gamma.

Tell us your budget, room and use case. Get a clear recommendation with a side-by-side comparison.

Resolution-aware calculator. Tells you minimum, optimal and maximum seating distance for your screen — 4K lets you sit closer than 1080p.

Synchronized flash + click. Record on your phone, count frames between flash and audio peak, multiply by 16.7 ms.

Pick a duration, press Start. Huge digits fill the projector — readable from anywhere in the room. Beeps at countdown < 10 s and at zero.

Top-down diagrams for each system. Shows correct angles per Dolby/THX standards: front 30°, surround 90–110°, rear 150°, height ±45° elevation.

Auto-cycles color fields, gradients and motion patterns for the duration you set. Helps equalise panels on a new LCD or DLP projector.

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.

Point your phone camera at the projected image. Get live RGB histogram, white balance check, 9-zone uniformity score, and clipping detection.

Five test patterns for 3D projector calibration: anaglyph, L/R separation, depth, crosstalk, convergence. Wear your 3D glasses (red-cyan or active shutter).

Soft-edge gradient overlap pattern for multi-projector setups. Adjustable overlap percentage, gamma-correct ramp, four edges.

Calculates LED strip length, recommended brightness, and the right color temperature for the bias light behind your screen.

Specifies the right gray paint (Behr or Sherwin-Williams) for your room lighting and calculates how much paint, primer and pearl additive you need.

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.

Microphone-based sound-level meter with A-weighting. Place phone 1 m from projector, press Start, get peak/avg/min readings.

Convert video clips to animated GIF images

Compress GIF files online — reduce size with lossy optimization, color reduction, and frame control

Online GIF trimmer with frame-level precision and automatic loop detection.

A tool for changing the pace of an animated GIF with per-frame precision.

Add music or sound effects to any GIF. Convert to MP4/WebM with audio. Waveform editor, trim, fade in/out, sync modes. No watermark.

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.

Draw the first frame or open a finished example

Drop your photos in — drag to reorder, and each frame gets its own duration. Animated GIFs are split into their frames and joined.

Count words, characters, sentences, paragraphs. Readability scores, keyword density, social media limits. Free, runs in your browser.

Write a poem to your own brief: occasion, recipient, form, meter and rhyme scheme. 22 fixed forms from sonnet to haiku.

Write song lyrics with a live syllable count, a rhyme-scheme check and section structure. Ten languages, right in the browser.

Cuts text to the number of characters, words or sentences you name: filler goes first, secondary sentences last. Every edit is shown.

All-in-one text formatter: 60+ operations for case conversion, cleaning, encoding, fancy text. Runs in the browser.

Check Russian and English punctuation, commas, dashes and spelling — with rule explanations and one-click fix. Russian has an advanced in-browser spell-checker.

Professional script reader with voice-activated scrolling

Convert between 12 keyboard layouts with auto-detection — QWERTY, Cyrillic, Korean, Arabic and more.

Browse 1 940 Unicode emojis with names in 10 languages. Search by paste, hex or :shortcode, copy in one click, download SVG/PNG. Free.

Paste a URL, text, or upload a file — get a clarity score, heatmap and per-word native alternatives.

Find synonyms for any word in 9 languages — our vetted dictionary plus Wiktionary, grouped by meaning. Online, no sign-up.

Check any text for profanity and censor swear words across 10 languages.

Online notepad with autosave: many notes, instant search, Markdown, password locks and export to TXT, PDF or Word. Opens straight in the browser.

Generate placeholder text in 10 languages — exact word or character count, HTML, Markdown or plain. Presets for meta, tweet, SMS.

Rewrite editor: paraphrase, change tone, shorten, simplify or fix your text — in its own language, with the changes highlighted.

Ready-made prompts for photos, chat, video and music, plus a builder that assembles your own prompt part by part and shows what is missing.

Generate a nickname, decorate it with symbols and instantly see where it will be accepted: Steam, Telegram, Discord, Minecraft and more.

Turns typed text into a page written by hand: handwriting styles, ruled paper, transparent PNG and PDF. Also writes by hand into an existing PDF form.

Unicode text styles: math alphabets, circles and squares, strikethrough, heart joiners, nickname frames — copied in one click.

Turn any text into ASCII block art. Pick a font (Banner, Big, Standard, Bubble), copy, paste into chat or code comments.

Analyze poems: detect meter (iambic, trochaic, dactylic), rhyme scheme, syllable count and spellcheck. For students and writers. Free.