Free and open-source, lightweight and fast, EXIF parser and writer. Made with the Handmade philosophy.
- Sub-millisecond metadata parsing from digital photo (RAW and JPEG) files, from standard Tiff Exif tags and various MakerNote IFDs.
- Normalize MakerNote information into standardized Exif tags where possible. Provide unaltered vendor-specific MakerNotes as well.
- Write basic information in standard Tiff Exif tags.
- Write Exif info to JPEG files.
Currently the parsing-support status looks like this:
| File Type | Parsing | MakerNote |
|---|---|---|
| .DNG (Adobe TIFF) | ✅ | N/A |
| .NEF (Nikon TIFF) | ✅ | 🟧 |
| .CR2 (Canon TIFF) | ✅ | 🟧 |
| .ARW (Sony TIFF) | ✅ | ❌ (planned) |
| .RAF (Fujifilm TIFF) | ✅ | ❌ |
| .MRW (Standard, Minolta) | 🟧 | ❌ |
| .MRW (Non-standard, Minolta) | ❌ | ❌ |
| .MDC (Minolta) | ❌ | ❌ |
| .X3F (Exif-containing FOVb, Sigma) | 🟧🐢 | ❌ |
| .RAW (Kodak) | ❌ | ❌ |
| .CRW (Canon CIFF) | ❌ | ❌ |
| .JPG (JPEG) | ✅ | |
| .WEBP (WebP) | ❌ | |
| .PNG (Portable Network Graphics) | ❌ |
Legend: ✅ Supported; 🟧 Partially Supported; ❌ Unsupported; 🐢 Slow.
MIT License.
I chose the MIT license on purpose to make a viable alternative for all other GPL-licensed software. I doubted between LGPL and MIT, but went for MIT. I would however greatly appreciate if you make any additions or fixes to this library, you contribute them back in a form of a PR or some minimal information in an issue.
Contributions are welcome! Open a PR and we can work on merging your efforts!
Possible contributions:
- PNG parsing.
- WebP parsing.
- CIFF parsing.
Programming guidelines: no malloc/free during parsing.