Portable Grey Map - ASCII

Writable

other

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Identify it

Extensions	`.pgma.pgm.pnm`
MIME types	`image/x-portable-anymapimage/x-portable-graymap`
Signatures	`5032` at byte 0 (Portable Grey Map - ASCII)
PRONOM	`fmt/407`
Wikidata	`Q28206683`

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Open it

GIMPOpen sourcereads and writes · GNU General Public License, version 3.0
ImageMagickOpen sourcereads and writes · ImageMagick License
Visualization ToolkitOpen sourcereads and writes · 3-clause BSD License
DevILOpen sourcereads and writes · GNU Lesser General Public License, version 2.1
GDALOpen sourcereads and writes · MIT License
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
AbydosOpen sourcereads · GNU Lesser General Public License
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later
OpenJPEGOpen sourcereads · 2-clause BSD 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
LibreOffice DrawOpen sourcereads · Mozilla Public License, version 2.0
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
Hijaak Digital Photo Studioreads and writes
IrfanViewreads and writes · freeware
L3DTreads and writes
PaintShop Photo Pro X3reads and writes
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
GMSreads
Q108202177reads · proprietary license / shareware
VisADreads
ABViewerreads
Image Alchemyreads
Kakadureads
MediaRich Serverreads
PaintShop Pro X6 Ultimatereads

And 5 more in the JSON record.

Convert it

To	With	Fidelity	Command and losses
Portable Network Graphics	ImageMagick	Lossless	`convert in.pgm out.png` Pixels kept; some metadata, colour profiles or layers may be dropped.
Tagged Image File Format	ImageMagick	Lossless	`convert in.pgm out.tif` Pixels kept; some metadata, colour profiles or layers may be dropped.
GIF 89a	ImageMagick	Lossy	`convert in.pgm out.gif` Reduced to 256 colours.
JPEG File Interchange Format 1.02	ImageMagick	Lossy	`convert in.pgm out.jpg` Lossy compression.
WebP	ImageMagick	Lossy	`convert in.pgm out.webp` Lossy compression.

Sources

From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), PRONOM, Wikidata. Updated 2026-10-20.

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