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3GP (.3GP) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

AVI (.AVI) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

FLV (.FLV) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

M4V (.M4V) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

MKV (.MKV) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

MOV (.MOV) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

MP4 is a universal MPEG-4 container. Usually holds H.264/H.265 video and AAC audio. The YouTube, smartphone, and TV standard.

MPG (.MPG) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

WebM is Google's open web format using VP9/AV1 and Opus — natively supported by Chrome, Firefox, and Edge.

WMV (.WMV) is a video file format. Video formats store moving images and often audio — used in recordings, films, and streaming.

AAC (.AAC) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

AIFF (.AIFF) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

FLAC (Free Lossless Audio Codec) compresses audio without quality loss — smaller than WAV, bit-perfect. Ideal for music archiving.

M4A (.M4A) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

MP3 is the world's most popular audio format. It uses lossy compression that removes barely audible sounds, making files up to 10× smaller than WAV at acceptable quality.

OGG (.OGG) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

OPUS (.OPUS) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

WAV (Waveform Audio File Format) is uncompressed lossless audio by Microsoft and IBM. It stores raw samples — the studio standard.

WMA (.WMA) is a audio file format. Audio formats store music, podcasts, voice recordings, and video soundtracks.

AVIF (.AVIF) is a image file format. Image formats store raster or vector graphics — photos, illustrations, icons.

GIF (.GIF) is a image file format. Image formats store raster or vector graphics — photos, illustrations, icons.

HEIC (High Efficiency Image Container) is Apple's default iPhone/iPad photo format. Smaller than JPG at the same quality but poor compatibility outside Apple's ecosystem.

JPG (JPEG) dominates digital photography. DCT lossy compression yields small files at good visual quality — the web standard since the 90s.

PNG is a lossless image format with alpha transparency. Ideal for logos, icons, screenshots, and sharp graphics.

SVG (.SVG) is a image file format. Image formats store raster or vector graphics — photos, illustrations, icons.

TIFF (.TIFF) is a image file format. Image formats store raster or vector graphics — photos, illustrations, icons.

WebP is Google's modern format with lossy/lossless modes, animation, and transparency. Files are 25–35% smaller than JPG.

CSV (.CSV) is a data file format. Data formats exchange structured information between systems and apps.

JSON (JavaScript Object Notation) is a lightweight text data format. The REST API, app config, and NoSQL standard.

TSV (.TSV) is a data file format. Data formats exchange structured information between systems and apps.

XML (.XML) is a data file format. Data formats exchange structured information between systems and apps.

YAML (.YAML) is a data file format. Data formats exchange structured information between systems and apps.

DOCX (Office Open XML) is Microsoft Word's document format. Enables editing text, styles, and layout — the office standard alongside PDF.

HTML (.HTML) is a document file format. Document formats store formatted or plain text — reports, contracts, notes.

Markdown (.MD) is a document file format. Document formats store formatted or plain text — reports, contracts, notes.

ODT (.ODT) is a document file format. Document formats store formatted or plain text — reports, contracts, notes.

PDF (Portable Document Format) is Adobe's fixed-layout document standard. Preserves fonts and graphics on any device.

RTF (.RTF) is a document file format. Document formats store formatted or plain text — reports, contracts, notes.

TXT (.TXT) is a document file format. Document formats store formatted or plain text — reports, contracts, notes.

OTF (.OTF) is a font file format. Font formats store letter shapes used in print and on websites.

TTF (.TTF) is a font file format. Font formats store letter shapes used in print and on websites.

WOFF (.WOFF) is a font file format. Font formats store letter shapes used in print and on websites.

WOFF2 (.WOFF2) is a font file format. Font formats store letter shapes used in print and on websites.

RAR (.RAR) is a archive file format. Archive formats pack multiple files into one, often compressed.

ZIP (.ZIP) is a archive file format. Archive formats pack multiple files into one, often compressed.