JPEG File Interchange Format 1.01

Partly documented

image · also known as JFIF (1.01)

The JPEG File Interchange Format (JFIF) is a file format for storing JPEG-compressed raster images. It was developed by the Independent JPEG Group and C-Cube Microsystems, in the absence of any such format being defined in the JPEG standard, and rapidly became a de facto standard; this is what is commonly referred to as the JPEG file format. A JFIF file comprises a JPEG data stream together with a JFIF marker. It begins with a Start of Image (SOI) marker, immediately followed by a JFIF Application (APP0). This is followed by the JPEG image data, which is terminated by an End of Image (EOI) marker. JFIF supports up to 24-bit colour and uses lossy compression (based on the Discrete Cosine Transform algorithm). Other types of compression are available through JPEG extensions, including progressive image buildup, arithmetic encoding, variable quantization, selective refinement, image tiling, and lossless compression, but these may not be supported by all JFIF readers and writers.

Identify it

Extensions	`.jpg.jpe.jpeg.jif.jfif.jfi`
MIME types	`image/jpeg`
Signatures	`ffd8ffe0` at byte 0 (JFIF 1.01)
PRONOM	`fmt/43`
Wikidata	`Q26329547`
Apple UTI	`public.jpeg`

Not sure your file is this? Identify it from its first bytes, in your browser.

Open it

Listed for the family; check that the software handles this version.

3DSlicerOpen sourcereads and writes · BSD licenses
Apache PDFBoxOpen sourcewrites · Apache Software License 2.0
AvogadroOpen sourcewrites · 3-clause BSD License
Bad PeggyOpen sourcereads and writes · GNU General Public License, version 3.0
digiKamOpen sourcereads and writes · GNU General Public License, version 2.0 or later
djxlOpen sourcewrites · 3-clause BSD License
farbfeldOpen sourcereads and writes · ISC license
GDALOpen sourcereads and writes · MIT License
GIMPOpen sourcereads and writes · GNU General Public License, version 3.0
GuetzliOpen sourcewrites · Apache Software License 2.0
ImageMagickOpen sourcereads and writes · ImageMagick License
ImageMagick (WebAssembly)Open sourcereads and writes · Apache-2.0
InVesaliusOpen sourcereads and writes · GNU General Public License, version 2.0 / GNU Lesser General Public License, version 3.0 or later
jpegliOpen sourcewrites · 3-clause BSD License
libjpeg-turboOpen sourcereads and writes · 3-clause BSD License / zlib License
PDFCreatorOpen sourcereads and writes · GNU General Public License, version 3.0
Q958908Open sourcewrites · GNU General Public License, version 2.0
thorfdbg/libjpegOpen sourcereads and writes · GNU General Public License, version 3.0
XfigOpen sourcereads and writes · GNU General Public License / MIT License
Aladin Sky AtlasOpen sourcereads · GNU General Public License, version 3.0
AndroidOpen sourcereads · Apache Software License 2.0 / GNU General Public License, version 2.0
Apache TikaOpen sourcereads · Apache Software License 2.0
AudiverisOpen sourcereads · GNU General Public License
CinePaintOpen sourcereads · GNU General Public License, version 2.0
cjxlOpen sourcereads · 3-clause BSD License
ConverseenOpen sourcereads · GNU General Public License, version 3.0
CropToolOpen sourcereads · MIT License
DokielOpen sourcereads · CeCILL / GNU General Public License, version 3.0 / GNU Lesser General Public License, version 3.0 / Mozilla Public License, version 2.0
Ginkgo CADxOpen sourcereads · GNU Lesser General Public License
GodotOpen sourcereads · MIT License
imageioOpen sourcereads · 2-clause BSD License
JHOVEOpen sourcereads · GNU Lesser General Public License
KolourPaintOpen sourcereads · BSD licenses
KritaOpen sourcereads · GNU General Public License, version 3.0
libjxlOpen sourcereads · 3-clause BSD License
Mapbox GL NativeOpen sourcereads · 2-clause BSD License
MapLibre GL JSOpen sourcereads · 3-clause BSD License
nomacsOpen sourcereads · GNU General Public License, version 3.0
OpaleOpen sourcereads · CeCILL / GNU General Public License, version 3.0 / GNU Lesser General Public License, version 3.0 / Mozilla Public License, version 2.0
OpenImageIOOpen sourcereads · BSD licenses

And 90 more in the JSON record.

Convert it

Convert a file in your browser The steps marked “in browser” run on your machine; nothing is uploaded.

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.jpe out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Portable Network Graphics	ImageMagick (WebAssembly)	Lossless	in browser Pixels kept; some metadata, colour profiles or layers may be dropped.
Quite OK Image Format	ImageMagick (WebAssembly)	Lossless	in browser Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.jpe out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick (WebAssembly)	Lossless	in browser Pixels kept; some metadata, colour profiles or layers may be dropped.
Windows Bitmap 5.0	ImageMagick (WebAssembly)	Lossless	in browser Pixels kept; some metadata, colour profiles or layers may be dropped.
PDF	ImageMagick (WebAssembly)	Partial	in browser The image is embedded in a PDF page.
AV1 Image File Format	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.
GIF 89a	ImageMagick	Lossy	`convert in.jpe out.gif` Reduced to 256 colours.
GIF 89a	ImageMagick (WebAssembly)	Lossy	in browser Reduced to 256 colours.
Icon file format	ImageMagick (WebAssembly)	Lossy	in browser Icons are limited to 256 × 256 pixels.
JPEG XL	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.
WebP	ImageMagick	Lossy	`convert in.jpe out.webp` Lossy compression.
WebP	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.

Documentation

kaitai grammar: https://github.com/kaitai-io/kaitai_struct_formats/blob/master/image/jpeg.ksy

Sources

From Kaitai Struct format gallery, PRONOM, Wikidata. Updated 2026-10-24.

Improve this record JSON