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High scores from the Asteroids run. Think you can beat them?

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High scores

The leaderboard from the Asteroids run. Clear a few waves and add your initials.

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Leaderboard

Everything runs in your browser.

No upload, no trackers, no servers in the loop.

[?]

Essentials 50 MB
The whole app - open, inspect and analyse any file, fully offline

Everything 120 MB
Everything most people need offline: reading text in images and PDFs, photo-location maps, QR scanning, iPhone (HEIC) photos, archives, EPS/PostScript graphics, AutoCAD and CAD drawings, and the sample gallery

Complete 345 MB
Opens a popup to add optional extras on top of Everything: reading text in 30+ languages, and on-device AI vocal separation - pick either or both

Credits

Install: Add to home screen for an offline PWA. Service worker caches the app shell. Use the buttons above to pre-cache heavy dependencies.
Audio: Native Web Audio API plus a hand-written radix-2 FFT for spectrogram and analysis. BPM read from ID3/MP4 tags when available, estimated via onset detection otherwise.
Video: HTML5 video for playback. Frame rate parsed from MP4 container metadata with FFmpeg fallback. Automatic scene detection with confidence scoring. iOS visible-player fallback.
QR codes: jsQR licence. Scans for QR codes in photos. Loaded only when needed.
Metadata: exifr licence. EXIF · IPTC · XMP · ICC.
HEIC: heic2any licence. Converts HEIC/HEIF to JPEG in the browser.
OCR: tesseract.js licence. On-device text recognition with language picker.
Sample font: Fraunces licence, the font on the samples page, is used under the SIL Open Font License.
Animation: lottie-web licence. Plays Lottie / Bodymovin JSON animations. Loaded only when needed.
Spreadsheets: SheetJS licence. Reads the binary Excel workbook (.xlsb) into sheets. Loaded only when needed.
PostScript: Ghostscript licence compiled to WASM. Renders EPS / PostScript graphics. ~16 MB, in the Everything download.
UI font: Geist and Geist Mono licence by Vercel are the interface and monospace typefaces, used under the SIL Open Font License.
PDF: pdf.js licence by Mozilla. Renders PDF pages, extracts text, and supports OCR scanning of image-only pages via Tesseract. Loaded only for PDF files.
3D PDF: nanoPRC licence by CascadiaVoxel, compiled to WASM with small changes of ours (source in the repository's tools/nanoprc). Decodes the PRC models inside 3D PDFs. ~600 KB, in the Everything download.
DWG: LibreDWG licence compiled to WASM. Parses AutoCAD .dwg / .dwt drawings and renders them to SVG. ~7 MB, in the Everything download.
File ID: Built-in identification for 1440+ file formats. Adobe, SolidWorks, Fusion 360, AutoCAD, Blender, Office, 3D mesh, executables, fonts, G-Code, log files, and more. Extracts version, author, and metadata from headers, ZIP manifests, ID3 tags, and gzipped XML projects. DOCX documents render with formatted text. AI-generation markers detected in photo metadata.
Tracker music: libopenmpt licence by the OpenMPT project, compiled to WASM (packaged by chiptune3 licence). Renders MOD, XM, IT, S3M and around sixty other tracker modules to audio on your device, so they get the full Sound section. ~1.5 MB, in the Everything download.
Molecules: 3Dmol.js licence from the University of Pittsburgh. Draws chemical structures - .mol, .sdf, .pdb, .cif and the rest - as ball-and-stick models, or as ribbon cartoons for proteins. ~500 KB, in the Everything download.
Format research: With thanks to Convert to it! licence, an open-source browser-only file converter, whose handlers we studied when working out which formats can be decoded on-device and how - it is not bundled or used as a dependency.
Photoshop: ag-psd licence. Decodes .psd / .psb documents - the composite image plus the full layer tree - in the browser. Loaded only when needed.
PCB / EDA: The built-in parser reads KiCad, Altium and other EDA project files and rebuilds boards and schematics into interactive SVG in the browser. With thanks to KiCad, whose open-source file format and board renderer we studied to draw footprints, tracks, zones and copper-layer geometry correctly - it is not bundled or used as a dependency.
Fonts: opentype.js licence. Reads the font tables and draws every glyph outline for .ttf / .otf / .woff / .woff2 / .ttc. Loaded only when needed.
Spam check: Cloudflare Turnstile terms. A bot check loaded only if you open the suggestion box to send feedback - the one third-party script the site can fetch. It never runs during file analysis, so dropping a file still contacts no server.
Map: Leaflet licence with OpenStreetMap licence tiles. Loaded only if the photo has GPS.
JPEG 2000: openjpegjs licence (OpenJPEG licence) compiled to WASM. Decodes JP2 / J2K images the browser can’t. Loaded only when needed.
FFmpeg: ffmpeg.wasm licence. Audio extraction and frame rate detection for formats the browser can't decode natively. The ~31 MB core (GPL licence) is fetched from a CDN the first time it's needed (then cached for offline use).
3D / CAD: occt-import-js licence (OpenCASCADE licence). Tessellates STEP, IGES and BREP CAD solids to meshes for the in-browser 3D viewer. ~9 MB, in the Everything download (or loaded on demand).
Sample models: The sample 3MF on the samples page bundles two 3D-printing calibration icons: 3DBenchy, designed by Daniel Norée for Creative Tools and now in the public domain, and Cali Cat - The Calibration Cat licence by Dezign, used under Creative Commons Attribution-NonCommercial-ShareAlike. With thanks to their creators.
E-books: foliate-js licence reads Kindle / Mobipocket (.mobi, .azw, .azw3 / KF8) e-books; DjVu.js licence decodes .djvu scanned-document pages. Loaded only when needed.
Databases: sql.js licence. SQLite compiled to WASM - lists tables, schema and row counts from .sqlite / .db files. mdb-reader licence reads Microsoft Access .mdb / .accdb tables and rows.
RAW: magick-wasm licence. ImageMagick compiled to WASM. Converts ARW, CR2, CR3, NEF, and other RAW formats. ~15 MB, loaded only when needed. Full sensor reconstruction (demosaic, white balance, gamma) uses LibRaw licence compiled to WASM, loaded on demand.
AI vocal separation: ONNX Runtime Web licence by Microsoft runs the neural network in the browser, on the GPU via WebGPU where available and WASM otherwise. The model is Ultimate Vocal Remover’s MDX-Net “Kim Vocal 2” licence. Splits a track into separate vocal and instrumental stems entirely on your device - nothing is uploaded. ~96 MB, in the Complete download.
G-code: The built-in parser and WebGL reconstructor draw 3D-printer and CNC G-code as solid deposited filament. With thanks to OrcaSlicer, whose open-source GCodeProcessor we studied to get the volumetric extrusion-width recovery and bead geometry right - it is not bundled or used as a dependency. Clip export encodes frames with the browser's WebCodecs and packs them into an MP4 with mp4-muxer licence; where the browser can't supply MP4-ready H.264 (Firefox), the clip is rendered to a WebM with webm-muxer licence and converted to MP4 by ffmpeg.wasm.
Archives: fflate licence for ZIP, libarchive.js licence for RAR / 7-Zip (CBR / CB7 comics), plus fzstd licence (Zstandard), xzwasm licence (XZ / LZMA2) and js-lzma licence (legacy .lzma) decompressors. Loaded on demand.

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