Convert PGM to PNG

PGM stores greyscale pixels with no compression at all. PNG stores the same image losslessly at a fraction of the size, and in a format anything can open - which makes this the usual way out of the netpbm world.

Drop PGM file(s) to start

or click to browse

What is PGM?

Greyscale, uncompressed, with a header you can read in a text editor. PGM is part of the netpbm family, and it exists because sometimes you want pixel values you can do arithmetic on without a decoder in the way. Image processing and computer vision code loves it.

What is PNG?

PNG is the web's lossless image format. It compresses without ever degrading the picture and has a real alpha channel, which is why screenshots, logos, line art and anything with sharp edges or text belong in it. The trade is size: on a photograph, PNG is enormous compared to JPG.

Your files never leave your device · no magic required