Convert OTF fonts to WOFF2 for the web locally - lossless, no upload. Including OpenType CFF fonts.
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
OTF (OpenType) often holds PostScript CFF outlines. WOFF2 wraps exactly that CFF table for the browser and compresses it with Brotli. The result is a small, web-optimised file every modern browser loads via @font-face.
This tool reads your OTF sfnt tables (CFF or TrueType outlines alike) and compresses them to WOFF2 locally. No outline conversion happens - the format stays CFF, all glyphs are preserved. Nothing is uploaded.
OTF fonts are popular with designers because OpenType brings advanced typographic features - ligatures, true small caps, old-style figures or contextual alternates. These live in dedicated tables of the font and are fully preserved when packed into WOFF2, so a browser can switch them on deliberately via CSS. You therefore lose no typographic subtleties on the move to the web; you only pack the same font into a compact, web-ready container. The one thing that matters is the licence: web fonts often need a separate embedding right that a desktop-only licence does not cover.
| Input formats | OTF |
|---|---|
| Output format | WOFF2 |
| Batch processing | Yes |
| Processing | Locally in your browser (WebAssembly) |
| File upload | None |
Limitations: Lossless container conversion: CFF outlines stay CFF, nothing is redrawn. Only convert fonts you own or have a licence for.
No, everything runs locally in the browser - even in airplane mode.
No. WOFF2 wraps the CFF table unchanged; the outlines stay PostScript CFF.
OTF to TTF would have to redraw CFF outlines as TrueType outlines - we deliberately do not offer that because it is not lossless. WOFF2 does not touch the outlines.
Only fonts you own or have a web licence for.