WOFF FORMAT
WOFF Converters
Convert font files to and from Web Open Font Format for broad web compatibility.
About WOFF
WOFF (Web Open Font Format) is a font packaging format developed by Mozilla, Opera, and Microsoft, standardised as a W3C Recommendation in 2012. WOFF wraps TrueType or OpenType font data with zlib (Deflate) compression, producing files roughly 40% smaller than uncompressed TTF or OTF equivalents.
Learn more: WOFF on Wikipedia
While WOFF enjoys 98%+ browser support, its successor WOFF2 (using Brotli compression) achieves an additional 30% size reduction. WOFF remains useful as a fallback format and for environments where WOFF2 support is unavailable. The format preserves all OpenType features, hinting instructions, and variable font axes from the original font.
Quick Facts
- Extension
- .woff
- Developed By
- W3C / Mozilla
- Year Introduced
- 2009
- Compression
- zlib (Deflate)
- Size Reduction
- ~40% smaller than TTF/OTF
- Browser Support
- 98%+ (2024)
- W3C Status
- Recommendation (2012)
- Use Case
- Web Typography
Convert from WOFF (3 tools)
Convert to WOFF (3 tools)
Answers at a Glance
Quick answers to common questions.
- Are my files secure?
- How long do you keep my files?
- What metadata do you keep?
- What happens after I drop a file?
- Why are conversions so fast?
- How do you measure performance?
- What are the exact limits for each plan?
- Can I process files in bulk?
- Why did my file fail to convert?
- Do you use my files to train AI?