Portable Grey Map - Binary

Writable

other

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Identify it

Extensions	`.pgmb.pgm.pnm`
MIME types	`image/x-portable-anymapimage/x-portable-graymap`
Signatures	`5035` at byte 0 (Portable Grey Map - Binary with comment)
PRONOM	`fmt/406`
Wikidata	`Q28206695`

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

Open it

GIMPOpen sourcereads and writes · GNU General Public License, version 3.0
LibRawOpen sourcewrites · Common Development and Distribution License version 1.0 / GNU Lesser General Public License, version 2.1
PotraceOpen sourcereads and writes · GNU General Public License
DevILOpen sourcereads and writes · GNU Lesser General Public License, version 2.1
GDALOpen sourcereads and writes · MIT License
ImageMagick (WebAssembly)Open sourcereads and writes · Apache-2.0
NetpbmOpen sourcereads and writes · GNU General Public License, version 2.0
OutGuessOpen sourcewrites · 4-clause BSD License
Q141647655Open sourcereads and writes · Apache Software License 2.0 / MIT License
SimThyrOpen sourcewrites · BSD licenses
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
GQViewOpen sourcereads · GNU General Public License, version 2.0
LibreOffice DrawOpen sourcereads · Mozilla Public License, version 2.0
OpenJPEGOpen sourcereads · 2-clause BSD License
PhotoRecOpen sourcereads · GNU General Public License
ConverseenOpen sourcereads · GNU General Public License, version 3.0
F-SpotOpen sourcereads · GNU General Public License / MIT License
GNU OcradOpen sourcereads · GNU General Public License, version 2.0 or later
Q1047199Open sourcereads · ImageMagick License
Q130252332Open sourcereads · Apache Software License 2.0 / Creative Commons Attribution 4.0 International / MIT License
VYMOpen sourcereads · GNU General Public License, version 2.0
zgvOpen sourcereads · GNU General Public License
Axialis IconWorkshopreads and writes
IrfanViewreads and writes · freeware
GIMP 2.0.2reads and writes
JavaViewwrites
Mathematicareads and writes · proprietary license
PaintShop Pro X4reads and writes
Q122459461writes
Zoner Photo Studioreads and writes
ACD FotoCanvas Litereads
ACDSee 5reads
ABViewerreads
Image Alchemyreads
Kakadureads
MediaRich Serverreads
PaintShop Pro X6 Ultimatereads
Photopeareads
PicaJetreads · freeware
PuriFilereads

And 2 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 (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 (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 (WebAssembly)	Lossy	in browser Reduced to 256 colours.
Icon file format	ImageMagick (WebAssembly)	Lossy	in browser Icons are limited to 256 × 256 pixels.
JPEG File Interchange Format 1.02	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.
JPEG XL	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.
WebP	ImageMagick (WebAssembly)	Lossy	in browser Lossy compression.

Sources

From PRONOM, Wikidata. Updated 2026-10-20.

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