PNM (Portable Anymap) is the umbrella Netpbm format that can be a PBM, PGM or PPM, used as a simple interchange format in pipelines.
PNM opens in GIMP, IrfanView and Netpbm tools; convert to PNG/JPG for normal use.
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 |
|---|---|
| Purpose-built for its niche | No transparency support |
| Limited support — may need converting |
Remove the background from PNM images, upscale to 4K, or generate new visuals with SharkFoto AI.
PNM (Portable Anymap) is the umbrella Netpbm format that can be a PBM, PGM or PPM, used as a simple interchange format in pipelines.
PNM opens in GIMP, IrfanView and Netpbm tools; convert to PNG/JPG for normal use.
PNM is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your PNM file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — PNM doesn't store transparency; convert to PNG or WEBP if you need it.