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PGM PNG
Free online converter

Convert PGM to PNG

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PGM to PNG converterFREE
Drop a .PGM file here
or pick one - we convert it to .PNG and give you the file to download

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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How to convert PGM to PNG

  1. Add your .PGM file - drop it in the box above or click to browse.
  2. Convert it to .PNG in a few seconds.
  3. Download your new .PNG file.

What to expect

  • Conversion is fully lossless - PNG stores the same pixel values as the source .pgm with no quality loss.
  • PNG compression is efficient on grayscale data; expect the output file to be 5-15× smaller than the original .pgm.
  • IrfanView may reduce a 16-bit .pgm to 8-bit on export; use GIMP or ImageMagick if full bit depth must be preserved.

Frequently asked questions

Will the PNG look different from the PGM?
No - both formats are lossless, so all gray values are identical in the output PNG.
Does PGM to PNG conversion keep 16-bit depth?
GIMP and ImageMagick both output 16-bit grayscale PNG from a 16-bit .pgm; IrfanView may reduce it to 8-bit.
Will the output PNG be in colour?
No - PGM is grayscale only, so the PNG is also grayscale; this is correct behaviour, not an error.
Can I batch-convert a folder of PGM files?
Yes - use XnConvert (drag in the folder) or ImageMagick: magick mogrify -format png -path ./out *.pgm.
Learn about the formats: .PGM · .PNG
Programs that convert PGM: Adobe Photoshop · Bryce · PhotoFiltre Studio · PolyTrans|CAD+DCC · reaConverter · Xara Page & Layout Designer · Ability Photopaint · Bryce for Mac