SFW is Seattle FilmWorks' proprietary format from its mail-order film-developing service, which delivered scans in this locked format.
SFW opens with SFW converters and IrfanView; convert to JPG to free the images 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 SFW images, upscale to 4K, or generate new visuals with SharkFoto AI.
SFW is Seattle FilmWorks' proprietary format from its mail-order film-developing service, which delivered scans in this locked format.
SFW opens with SFW converters and IrfanView; convert to JPG to free the images for normal use.
SFW is optimised for its specific use rather than strictly lossless storage.
Use SharkFoto's free tools — upload your SFW file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.
No — SFW doesn't store transparency; convert to PNG or WEBP if you need it.