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Developer Reference

Image MIME Type Reference

The definitive index of image file formats — MIME types, magic bytes, browser compatibility, compression modes, and developer code snippets. Bookmark this and never look it up again.

156
Image formats
5
Browsers tracked
4
Code languages
Free API
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Format MIME Type Features Browsers
MAC
MacPaint Image
Legacy & Raster Graphics
 image/x-macpaint
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
MRW
Minolta Raw Image
Photography & Raw Imaging
 image/x-minolta-mrw
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
SID
Multi-resolution Seamless Image Database
Geospatial & GIS Graphics
 image/x-mrsid-image
Transparency
Animation — not supported
Progressive loading
Chrome Firefox Safari Edge
BMP
Windows Bitmap (Microsoft Legacy MIME)
Raster Graphics
 image/x-ms-bmp
Transparency
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
NEF
Nikon Electronic Format
Photography & Raw Imaging
 image/x-nikon-nef
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
ORF
Olympus Raw Format
Photography & Raw Imaging
 image/x-olympus-orf
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PSP
PaintShop Pro Image
Raster Graphics & Project Files
 image/x-paintshoppro
Transparency
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
RAW
Panasonic RAW Image
Photography & Raw Imaging
 image/x-panasonic-raw
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PCX
PiCture eXchange
Legacy & Raster Graphics
 image/x-pcx
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PEF
Pentax Electronic File
Photography & Raw Imaging
 image/x-pentax-pef
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PICT
Apple PICT Image
Legacy & Metafile Graphics
 image/x-pict
Transparency
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PNG
Portable Network Graphics (Legacy MIME)
Web Graphics
 image/x-png
Transparency
Animation — not supported
Progressive loading
Chrome Firefox Safari Edge
PNM
Portable Anymap
Raster Graphics
 image/x-portable-anymap
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PBM
Portable Bitmap
Raster Graphics
 image/x-portable-bitmap
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PGM
Portable Graymap
Raster Graphics
 image/x-portable-graymap
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
PPM
Portable Pixmap
Raster Graphics
 image/x-portable-pixmap
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
QTIF
QuickTime Image Format
Legacy & Metafile Graphics
 image/x-quicktime
Transparency
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
RGB
Silicon Graphics Image
Legacy & Raster Graphics
 image/x-rgb
Transparency
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
X3F
Sigma X3F RAW Image
Photography & Raw Imaging
 image/x-sigma-x3f
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
ARW
Sony Alpha Raw Image
Photography & Raw Imaging
 image/x-sony-arw
Transparency — not supported
Animation — not supported
Progressive loading — not supported
Chrome Firefox Safari Edge
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Free JSON API

Use this data in your project

Every format's full specification is available as a free, open JSON endpoint. No authentication, no rate limits for reasonable use.

Example endpoints
GET /mime/image/webp.json
GET /mime/image/jpeg.json
GET /mime/image/png.json

Why developers reference this page

Magic bytes for file detection
Exact hex signatures to detect image formats without relying on file extensions.
Browser compatibility matrix
Exact minimum browser versions for each format, including legacy IE coverage.
Copy-paste code snippets
MIME detection in Python, Node.js, Go, and PHP. One click to copy.
Embeddable badge & widget
Add a live spec card or SVG badge to your README or documentation.
Side-by-side comparisons
Compare any two formats on compression, features, and support in one view.
Open JSON API
All spec data is machine-readable. Pull it into your own tools and docs.
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