Convert WOFF2 to OTF Online

How to Convert WOFF2 to OTF Online

1. Upload Your WOFF2 File: Drag and drop or click "+ Add Files" to load a .woff2 web font from your device. Batch upload is supported — convert an entire web-font directory in one pass. Parsing runs locally via a lazy-loaded opentype.js build.
2. Confirm OTF Output: The output extension is fixed to .otf on this page (use the WOFF2 to TTF page if you need a TrueType-flavoured outline instead). The converter decompresses the Brotli-packed WOFF2 container, reverses the transforms on the glyf / loca tables, and writes the embedded outlines back into a plain OpenType (sfnt) wrapper.
3. Review Glyph and Metadata Preservation (Optional): The reconstructed .otf carries the same glyph outlines, kerning, OpenType features (liga, kern, ss01, etc.), and name table that the foundry packed into the WOFF2. Hinting (fpgm, prep, cvt) is preserved when present. There is no subsetting or family-rename step — install the result and the font shows up under its original PostScript and family name.
4. Convert and Download: Click "Convert" and download the resulting .otf. Drop it into Windows C:\Windows\Fonts, macOS Font Book, or any design app's font folder. No sign-up, no watermark, no email gating.

Why Convert WOFF2 to OTF?

WOFF2 is a delivery wrapper, not a desktop format. It is Brotli-compressed OpenType data designed to ride over HTTP — installers on Windows and macOS will not register a .woff2 because the OS font loader expects an uncompressed sfnt table directory. Converting back to .otf unpacks the original OpenType payload and lets your design tools, OS, and print drivers see the font.

• You only have the web copy of a font you already license — the foundry's site shipped WOFF2 but the desktop ZIP got lost. Converting the WOFF2 back to OTF lets you use the same outlines you already paid for in Illustrator, InDesign, Affinity, or Figma desktop without re-purchasing the desktop license seat (check your EULA — some foundries explicitly forbid this).
• Matching screen and print copy — designers building a brochure or social asset that has to match a website often grab the live WOFF2 from inspect → Network so the desktop layout uses the exact same outlines, kerning, and OpenType features the browser renders.
• Installing a font into Microsoft Office or Adobe apps — Word, PowerPoint, Photoshop, and InDesign all read OTF/TTF from the OS font directory but ignore .woff2. Converting first is the only path that doesn't involve a font-editor like FontForge.
• Archiving a web font for offline use — open-source families distributed only as WOFF2 (e.g., some Google Fonts mirrors or self-hosted bundles) need an OTF copy for embedding into PDFs, Keynote decks, or game engines that can't read WOFF2.
• Inspecting OpenType features and glyph coverage — font inspectors like FontDrop, Wakamai Fondue, and FontGoggles read OTF directly; converting first removes the Brotli decode step and exposes the GSUB/GPOS tables to any OpenType-aware tool.
• Embedding in cross-platform projects — Electron/Tauri desktop apps, Unity and Unreal projects, and many e-reader formats expect OTF or TTF. WOFF2 is a web-runtime-only format outside the browser.

WOFF2 vs OTF — Format Comparison

What Actually Happens During the Decode

A correctly converted file will not always be a bitwise copy of the original OTF the foundry compiled (the W3C spec explicitly allows decoders to repack tables differently), but the rendered output — every glyph, every kerning pair, every OpenType feature — is identical.

Frequently Asked Questions

Will the converted OTF look identical to the original font?

Yes for all practical purposes. WOFF2 is a lossless wrapper — the Brotli step compresses bytes, and the glyf/loca transform is fully reversible. The reconstructed OTF carries the same outlines, kerning, OpenType layout features (liga, dlig, kern, stylistic sets), and name table. The W3C spec notes the binary may not be a bitwise match to whatever OTF the foundry originally compiled, but the rendered result is the same.

Is converting and using a foundry's WOFF2 legal?

It depends on the foundry's license. Most commercial desktop + web licenses cover the same outlines in both forms, so converting your own WOFF2 back to OTF for desktop use is fine. Web-only licenses (cheaper, ~$10–40 per family) typically prohibit installing the font on a workstation — converting and installing breaches that EULA. Open-source families under the SIL Open Font License (Google Fonts, most Fontsource bundles) allow conversion and redistribution as long as you don't sell the font on its own.

Why is the OTF much larger than the WOFF2?

WOFF2 strips Brotli compression on the way in, and the glyf transform packs coordinate data more efficiently than raw TrueType. A typical Latin-only sans-serif might be 30–50 KB as WOFF2 and 80–140 KB as OTF — roughly 2-3x larger. The OTF is the canonical, uncompressed form; the inflation isn't bloat, it's just the bytes a font file actually contains before the WOFF2 wrapper.

Can I install the resulting OTF on Windows and macOS?

Yes. On Windows 10/11, right-click the .otf and choose "Install for all users" (writes to C:\Windows\Fonts) or "Install" (per-user). On macOS, double-click to open Font Book and click "Install Font" — the file lands in ~/Library/Fonts. The font appears in Word, PowerPoint, Photoshop, Illustrator, Affinity, Figma desktop, and any other app that reads OS-registered fonts.

Does converting preserve OpenType features like ligatures and stylistic sets?

Yes. The GSUB and GPOS tables (which hold ligatures, contextual alternates, stylistic sets, kerning, mark positioning, and language-specific shaping) are stored as whole tables inside the WOFF2 and copied unchanged into the OTF. If the original WOFF2 ships with liga, dlig, ss01–ss20, tnum, etc., the OTF has them too.

What's the difference between converting to OTF and converting to TTF?

OTF preserves the original outline format the font was compiled with — if it was originally CFF/PostScript outlines, you get OTF with CFF (OTTO flavor); if it was originally TrueType outlines wrapped in an OpenType container, you get an OTF holding glyf data. Converting to TTF forces TrueType outline format, which can require converting CFF curves to quadratic Béziers — a one-way, mildly lossy step. For desktop use, pick OTF unless your target app specifically prefers TTF (some older Windows apps and embedded systems do).

How is WOFF2 different from WOFF (1.0)?

WOFF 1.0 uses zlib/Flate compression and became a W3C Recommendation on 13 December 2012 (first submitted as a Working Draft in 2010). WOFF2 swaps in Brotli and adds reversible transforms on glyf and loca, producing typically 20–30% smaller files than WOFF for the same source font (median ~24% for TTF-flavored fonts). Both wrap the same OpenType payload. Convert a .woff if your decoder only handles WOFF 1.0, otherwise WOFF2 is the modern default.

Does the tool handle variable fonts and color fonts?

Yes. WOFF2 supports variable-font tables (fvar, STAT, gvar, HVAR, MVAR, cvar) and chromatic-font tables (COLR/CPAL, SVG, sbix, CBDT/CBLC). The converter copies these tables through to the resulting OTF — your variable axes and color layers survive. macOS Font Book and Windows Font Settings both recognize variable OTFs since macOS Catalina (10.15) and Windows 10 1903.

Are my files uploaded anywhere?

No. Parsing and re-packaging happen entirely in your browser via a lazy-loaded opentype.js build. No account is required, there are no watermarks, and no Pro tier gates the conversion or output file size.