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Formats
Which formats you can read and write.
Compress keeps each file's format. Convert writes the format you ask for. Type is detected from contents.
| Format | Read | Write |
|---|---|---|
| JPEG | Yes | Yes |
| PNG | Yes | Yes |
| WebP | Yes, including animated | Yes, including animated |
| AVIF | Yes | Yes |
| GIF | Yes, including animated | Yes, including animated |
| HEIC / HEIF | Yes | No: convert to JPEG, WebP or AVIF |
| TIFF | Yes | Yes |
| BMP | Yes | Yes |
| ICO | Yes | Yes (up to 256 × 256) |
Not supported: SVG, camera RAW, JPEG XL — these return 415 unsupported_format. HEIC can be read but not written: convert it instead.