Convert PGM to PNG
PGM and PNG are both lossless, so the image comes through unchanged.
They open in the converter with PNG selected.
Browse filesFiles stay on your device.
What changes
Both formats are lossless, so the quality doesn’t change.
The file size stays about the same.
PNG supports transparency and PGM doesn’t, so there’s nothing transparent to lose: the background is already solid. What you gain is the option to remove the background later, which a PGM doesn’t allow.
Your browser may not be able to open PGM files, but the converter reads the file itself, so it can still convert it.
When it’s worth it
Choose PNG for: Logos, screenshots, and graphics. Keeps every pixel and supports transparent backgrounds.
Stay with PGM for: Grayscale tests and scientific image processing.
How to convert PGM to PNG
- Drop the PGM files on this page, or browse for them. Up to 200 at once.
- The converter opens with the files loaded and PNG selected.
- Press Convert, then save each file or all of them as a ZIP.
Questions
Does converting PGM to PNG lose quality?
No. Both formats are lossless.
What is the PNG format?
Lossless image format from 1995, standardized as ISO/IEC 15948. It compresses with Deflate and supports an alpha channel and 8 or 16 bits per channel, which is why it’s the default for screenshots, logos and anything that has to stay sharp.
What is the PGM format?
The greyscale member of the Netpbm family, with the same simple header as PPM but a single value per pixel. Tools that read PGM usually read PPM too, since the formats only differ in the channels.
Are the files uploaded?
No. The file is opened in this tab, converted here and saved from here. There’s no account and no watermark.
How many files can be converted at once?
Up to 200 per batch and about 2 GB per file, within the memory this device has available.