Structured Fax File
Unknownimage
file format
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| Extensions | .sff |
|---|---|
| MIME types | image/x-sff |
| Signatures | 53666666 at byte 0 |
| Wikidata | Q2357210 |
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From Just Solve the File Format Problem (File Formats Wiki), Wikidata. Updated 2026-10-24.