G3 is the Group 3 fax compression format for black-and-white scanned pages, the long-standing standard for telephone fax transmission.
G3 opens in fax software and ImageMagick; convert to TIFF/PDF to view and share.
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 G3 images, upscale to 4K, or generate new visuals with SharkFoto AI.
G3 is the Group 3 fax compression format for black-and-white scanned pages, the long-standing standard for telephone fax transmission.
G3 opens in fax software and ImageMagick; convert to TIFF/PDF to view and share.
G3 is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your G3 file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — G3 doesn't store transparency; convert to PNG or WEBP if you need it.