Drop a OTF file below and this tool converts it to WOFF instantly, entirely inside your browser — no upload, no install, no sign-up. OpenType Font with PostScript (CFF) outlines — common for professionally designed and licensed typefaces.
Web Open Font Format — a compressed wrapper around TTF/OTF outline data, built for fast @font-face loading on the web. Conversion runs locally using WebAssembly, so your font file never leaves your device — useful for licensed or client fonts you can't hand to a third-party server.
Frequently asked questions
Yes, completely free, with no sign-up and no limit on how many fonts or how many times you use it.