Converting OTF to WOFF produces a web-ready font that zlib-compresses the source for browser delivery. Works with both TrueType and PostScript outlines in the OTF, preserves every feature, and typically shrinks the file by about 40%.
Drag & drop font files here, or browse
Drop your OTF files here
Lossless conversion. The WOFF contains the exact glyph data, features, and outlines from the OTF. File size drops substantially. WOFF is larger than WOFF2 but supported on older browsers where WOFF2 isn't.
WOFF runs in every browser since IE9 (2011), covering effectively every web font-capable environment.
OTF (OpenType) is Microsoft and Adobe's extension of the TrueType format. It adds cubic Bézier (PostScript/CFF) glyph support plus rich typographic features: stylistic alternates, ligatures, small caps, contextual substitutions, and the full OpenType feature model. Professional typography depends on OTF's capabilities.
WOFF (Web Open Font Format) is a 2010 wrapper that zlib-compresses a TTF or OTF for web delivery. Files are roughly 40% smaller than raw TTF/OTF, with the same glyph data preserved exactly. WOFF works in every browser back to IE9 and exists primarily for the web.
Yes. WOFF is a container that preserves whatever outlines the source OTF contains, TrueType or PostScript/CFF. Nothing is converted or approximated during wrapping.
Yes, completely. WOFF wraps the font's tables without modification. Kerning, ligatures, stylistic alternates, and every other OpenType feature work exactly as in the source OTF.
OTF (OpenType) is Microsoft and Adobe's extension of the TrueType format. It adds cubic Bézier (PostScript/CFF) glyph support plus rich typographic features: stylistic alternates, ligatures, small caps, contextual substitutions, and the full OpenType feature model. Professional typography depends on OTF's capabilities.
WOFF (Web Open Font Format) is a 2010 wrapper that zlib-compresses a TTF or OTF for web delivery. Files are roughly 40% smaller than raw TTF/OTF, with the same glyph data preserved exactly. WOFF works in every browser back to IE9 and exists primarily for the web.
Yes. The converter runs entirely in your browser using WebAssembly. Your font files are never uploaded, never sent to a server, and never leave your device.
There's no hard limit. Font files are usually small (under a few MB), so even very large fonts process without issue. Variable fonts with many axes are handled cleanly.