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Why convert MNG to SFW?
Fast
Your file is converted in under 30 seconds in our cloud.
Secure
Files are automatically deleted after 1 hour.
Quality preserved
Maximum quality preserved during conversion.
About the MNG format
MNG — Multiple-image Network Graphics
MNG is the animated image sibling of PNG, designed to be a replacement for GIF animations. While technically superior (full color, gamma correction, more compression options), it never achieved widespread browser adoption and was largely superseded by APNG and WebP for animation.
Common uses
- Legacy MNG animation playback
- Converting MNG animations to APNG or GIF
- Archiving early web animations
- Advanced animation with embedded PNG frames
About the SFW format
SFW — Seattle Film Works
SFW is a proprietary image format used by Seattle Film Works (later PhotoWorks), a film processing service that offered digital images on floppy disks. These files are legacy digital scans from the 1990s when SFW was one of the first mass-market film digitization services.
Common uses
- Recovering Seattle Film Works digital photo scans
- Converting 1990s SFW disk photos to modern formats
- Legacy film scan archiving
- Historical family and event photo recovery
Related conversions
Other conversions available for MNG and SFW files
Frequently asked questions
Is the conversion free?
Yes, basic conversion is completely free. For large volumes, check out our paid plans.
What is the maximum file size?
Free accounts can convert files up to 25 MB. Pro accounts up to 100 MB.
How long are my files kept?
Files are automatically deleted after 1 hour on the free plan, 24 hours on Pro.
What formats are supported?
We support over 200 source and target formats. See our complete formats page.