PGM (Portable Graymap) is the Netpbm grayscale format, storing simple uncompressed gray images often used in image-processing research.
PGM opens in GIMP, IrfanView and Netpbm tools; convert to PNG/JPG to view widely.
Share, post and embed pictures across sites and apps.
Work with the format in editors like Photoshop and GIMP.
Keep memories and assets in a widely-readable form.
| ✔ Strengths | ✖ Limitations |
|---|---|
| Excellent compatibility | No transparency support |
| Limited support — may need converting | |
| Large file sizes |
Remove the background from PGM images, upscale to 4K, or generate new visuals with SharkFoto AI.
PGM (Portable Graymap) is the Netpbm grayscale format, storing simple uncompressed gray images often used in image-processing research.
PGM opens in GIMP, IrfanView and Netpbm tools; convert to PNG/JPG to view widely.
PGM is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your PGM file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — PGM doesn't store transparency; convert to PNG or WEBP if you need it.