Sitemap — Page 8

Send a named star to the shared sky. For hope, gratitude or in memory of someone. Your wish stays — forever, in its own coordinates.

Ask a question, shake your phone, and the ball answers. A real twenty-sided die inside, and a cryptographic generator picking the answer.

Live night sky — Sun, Moon, planets and constellations in real positions for Moscow. Auto-updates every 5 minutes.

Doodle face constructor for kids — mix parts, roll the dice, print or share

Add your entries, then spin the wheel to pick a random winner.

Pick an element and paint on the canvas. Watch sand fall, water flow and fire spread.

Click or drag across the sheet to pop bubbles. They grow back, so the popping never ends.

A playful lie detector game: a prank truth/lie scanner, a voice nervousness meter and party questions. Not a real test — just for fun. Free.

Compare two birth charts: cross-aspects, house overlays, and an honest account of which conclusions survive an imprecise birth time.

Birth chart from date, time and place: ascendant, houses, aspects. Historical time zones and an honest error bar on your birth time.

Cast the chart for the moment you ask, in Regiomontanus houses: significators, dignities, perfection and a step-by-step judgment.

Full destiny matrix chart: 22 arcana, chakra map, purpose lines and an age ring marking where you are now. Every number shows its own arithmetic.

Your sign from the real position of the Sun, not a date table. For cusp birthdays we show the exact moment it changed, in your time zone.

Online tarot with the Rider-Waite-Smith deck: 6 spreads, upright and reversed meanings, voice reading and a journal. Free.

Family safe word, the call-back rule and voice comparison with a saved sample. Disproves a "relative in trouble" call; never confirms identity.

Detect AI-generated audio content

Record audio continuously for hours.

AI security camera (people, pets, vehicles) or analyze an existing recording by timestamp. P2P, in your browser.

Browser-based baby monitor with cry detection

Night vision through your phone or laptop camera: stacks frames, removes noise and brightens the live picture. Photo, video, device looks.

Download or generate sample video for player testing — 1080p / 4K H.264 MP4 catalog plus on-the-fly WebM and MP4 via MediaRecorder.

Download or generate sample audio for testing — 1 kHz tone, pink noise, custom sine/white/pink at 44.1/48/96 kHz, 16/24-bit, mono/stereo WAV.

Generate dummy files of any size from 1 KB to 10 GB. Zero, random, text or pattern bytes, custom extension, instant browser download.

Generate test images for QA — color bars, grayscale, gradient, checker, grid up to 4K. Export as PNG, JPEG or WebP with adjustable quality.

Generate test PDFs in your browser — lipsum text, multi-page sections, big table or blank. A4/Letter/Legal/A3, up to 500 pages, custom title.

Generate sample documents in browser — CSV, JSON, XML, RTF, Markdown, TXT with deterministic rows. Custom row/column count up to 100 000.

Download codec test files — H.264, H.265 HEVC, AV1, VP9, VP8 in MP4 and WebM. Verify your player and pipeline support with live browser probe.

Generate log or linear sine sweep WAV files for REW, ARTA and room measurement. 20 Hz–20 kHz, 44.1/48/96 kHz, 16/24-bit, full channel routing.

TV calibration patterns for projectors and displays — SMPTE bars, PLUGE, grayscale, focus star, HDR window, overscan. PNG up to 8K plus MP4 loops.

Generate corrupted test files for error-path QA — truncate, zero magic bytes, bit-flip, zero middle or rename extension. Browser-based.

Identify the real cause from the symptom and get the exact commands for your system.

Choose the ailing folder, then a safe place for the survivors.

Deletes the files you pick, then fills the drive's free space with random data until it is full — the way desktop utilities make deleted files unrecoverable.

Extract ISO files online with UDF and Joliet support. Stream 16GB+ images, preview files in-tree, verify SHA-256 in your browser.

Build ISO files from a folder in your browser. Joliet long names, hybrid USB MBR, streamed 8GB+ output via File System Access.

Convert BIN/CUE disc images to ISO

Inspect ISO, VHD, VHDX, VMDK, QCOW2, DMG, E01 disk images. Parse MBR/GPT, detect filesystems, hex view, stream SHA-256.

Opens .dbf tables from dBASE, FoxPro and Clipper, repairs damaged ones, brings back deleted records and exports to CSV.

Opens Outlook Express folders without Outlook Express: lists the messages, shows each one, and saves them as EML or a whole folder as mbox.

Opens DXF drawings without CAD, including truncated and damaged ones, shows them and exports to SVG or a rewritten DXF.

Scroll wheel or two fingers to zoom, drag to pan, double-click to zoom in.

Reads OneNote sections in your browser: shows the note text, the authors and the dates, and saves everything as a plain text file.

Opens Windows registry hive files without Windows, shows keys and values, and recovers deleted keys from the hive's free space.

Opens Adobe Illustrator files without Illustrator, including ones saved without PDF compatibility, and exports them to SVG and PNG.

Drop the file that will not open — we walk its structure and tell you what is wrong with it.

Drop the RAW file — .cr2, .cr3, .nef, .arw, .dng, .rw2, .orf, .raf.

Drop the database — .db, .sqlite, .sqlite3, .db3 or a message store.

Drop the ransom note and one encrypted file — either alone also works.

Audio, video, images, PDF, archives, subtitles and data files — one tool detects what you dropped and shows every format it can become.

ZX Spectrum tapes in your browser: TZX/TAP to audio for loading into a real Spectrum, cassette recordings back to TAP, tapes from your own BASIC.

Drop the image of the card or drive — .img, .dd, .bin, .raw.

Register a robot and get a digital passport with TRID

Convert between quaternions, Euler angles and rotation matrices

Calculate required servo torque from payload and lever

Compute steps/mm for 3D printers and CNC firmware

Calculate gear ratio, RPM and torque for gear trains

Compute robot linear speed and odometry from wheel data

ISO 13855 protective separation distance for cobots

Tune PID gains and visualize step response in real time

Design and print line-follower robot race tracks

Visualize URDF robot links, joints and meshes in browser

Explore robot arm poses with DH parameter sliders

Browser-based serial monitor for Arduino and ESP32

Look up robot vacuum error codes and fixes instantly

Filament + electricity + wear — drag in an STL or type the volume

20+ material presets — PLA, PETG, ABS, TPU, Nylon, carbon-filled and more

Layer-by-layer toolpath, time and filament estimates

Image → grayscale height map → STL — flat or curved

Parametric STL + G-code with M104 per segment — any printer, any filament

Parametric bins and baseplates — export STL for any 3D printer

XYZ cube, retraction tower and flow tower — parametric, export STL

AI depth or turntable silhouettes — export STL, slice and print

Start from an example for your job or upload your old resume — download PDF or Word

Estimate the automation risk of any profession with multi-source 2026 data.

Free RIASEC career test for teenagers. Discover careers that fit your interests, with real pay, job growth and AI outlook for each match. Free.

PDF editor online: change the text already in the document, sign it, fill a form, white out what should go, reorder pages. All in one pass.

Photograph a page with your phone — the edges are found for you, the perspective is straightened, the shadows go, and out comes a PDF that will be accepted in place of a scan.

Black out data in a PDF: type a name and cover it on every page. Redacted text is removed from the file, not hidden under a box.

Sign PDF documents with a digital signature

Verify a PDF document's digital signature

Combine multiple PDFs into one file. Reorder pages, pick page ranges per file, rotate, add bookmarks. Fast, in your browser.

Converts DjVu to PDF in your browser: letters stay sharp, the text is searchable, bookmarks, links and page numbers carry over.

Print PDF, Word files and photos from a computer or phone: pages per sheet, a poster across several sheets, booklets, two-sided printing.

Split a PDF by pages, ranges, every N pages, or bookmarks. Preserves outlines and page labels.

Convert JPG, PNG, WebP, AVIF or HEIC images to one PDF. Drag to reorder, rotate, set page size + margins.

Convert PDF pages to JPG, PNG or WebP: one image per page or all pages in one long image. Pick DPI and pages. In the browser.

Rotate PDF pages 90, 180 or 270 degrees per page or all at once. Preserves bookmarks and page labels. In the browser.

Shrinks a PDF while keeping text, fonts and bookmarks — only the images get recompressed. Includes a fit-under-a-size mode. Runs in your browser.

Rearrange or remove pages of a PDF with a drag-and-drop visual editor. Preserves bookmarks and page labels. Browser-only, free.

Number PDF pages and see the number on your own page before you download. Nine positions, custom pattern, roman front matter, facing pages.

Pull selected pages from a PDF into a single new file. Pick by number, by range, or by clicking thumbnails. Bookmarks survive.

Delete unwanted pages from a PDF. Click thumbnails or type a range. Blank-page sweep included. No size cap.

Remove the password from a PDF you can open. Decrypts, drops owner restrictions, lets you copy and print. No signup.

Stamp text or a logo on a PDF. See it on your own page before downloading: drag the mark, put it over or under the text.

Add an AES-256 password and copy/print/edit restrictions to a PDF. Real encryption that every reader from 2017+ understands.

Trim white borders from a PDF. Auto-detect ink, set margins in mm/in/pt, preview live. Vector output, in the browser.

Convert .docx to PDF in the browser. A4, Letter, three quality levels, custom margins. No installation.

Word to JPG and PNG converter: every .docx page becomes a separate image. Up to 300 DPI, pick the pages you need. Runs in your browser.

Convert HTML to PDF in the browser. Paste source, upload .html, or fetch a URL. A4, Letter, custom margins.

Pull tables out of PDFs and scans into XLSX. The grid is shown before download, and numbers and dates arrive as numbers and dates.

Convert PDF to a .docx Word file in the browser. Heading detection, page breaks. Editable text.

Drop the PDF your reader refuses to open.