File Formats
Every kind of file, explained: what it is, the software that opens it and how its bytes are laid out. Drop any file on any page of this site to look inside it.
It opens in a hex viewer straight away. The file is read in your browser and never leaves your computer.
Categories
Audio
Recordings, compressed music, MIDI and tracker modules, music projects, instruments and playlists.
12 formatsVideo
Containers, raw video streams, streaming manifests, subtitles and editing projects.
9 formatsImages
Photos and bitmaps, vector drawings, camera raw, layered projects, icons and retro formats.
23 formats3D & CAD
Meshes, scenes, modelling projects, engineering drawings, 3D printing and point clouds.
14 formatsDocuments
Printable pages, word processing, spreadsheets, presentations, ebooks, text and fonts.
12 formatsData
Structured text, binary serialisation, databases, science and maps, AI models, compression and archives.
23 formatsCode
Source code, bytecode, programs and libraries, object files, firmware, shaders and packages.
22 formatsSystem
Disk and floppy images, keys and certificates, network captures, shortcuts, settings and logs.
10 formatsFully documented
These formats have a complete reference, with a page for each part of the file.