OTF to WOFF2 Converter - Free Online Tool

Convert OTF to WOFF2 online instantly - free, no signup. Compress OpenType (OTF) font files to WOFF2 format. Brotli-compressed, 50%+ smaller, kerning & OpenType features preserved.

Converts in seconds

Files removed after use

Free · No account

Convert otf to woff2

otfwoff2

Drop your OTF file here

or browse files · Max 10 MB

.otf

What happens when you convert OTF to WOFF2?

An OTF is a desktop format. The glyph outlines, the OpenType feature tables, the full character set, all of it is identical to what the web consumes, but it is stored uncompressed because a desktop install pays no HTTP cost for it.

A browser does. WOFF2, finalized as a W3C Recommendation in 2018, is a compressed wrapper around that exact data: Brotli compression plus a transform step that reorders the glyph tables so they pack down harder.

This wrapping does not touch the outlines. An OTF most often carries PostScript (CFF) curves, and WOFF2 preserves them as they are rather than redrawing them, which makes the conversion lossless: the rendered output is the same shape on screen, with every kerning pair and OpenType feature intact.

A WOFF2 file runs 50% or more under the source OTF, and nothing inside it is discarded. The split is simple. The OTF stays on the desktop as the editable source; the WOFF2 goes to the server as the delivery format.

Why WOFF2 is the right OTF output for the web?

WOFF2 reaches more than 97% of global browser traffic in 2026, and it has held that level across current Chrome, Edge, Firefox, Safari, and Opera for years. For almost every production site, an OTF converted to WOFF2 is the only web font file you need to ship: smaller payload, faster first paint, no fallback weight to carry.

The size gap is the reason. Where the raw OTF ships uncompressed, the WOFF2 applies Brotli and the glyph transform on the same outlines, landing roughly half the size with no loss of fidelity.

Google Fonts has served WOFF2 as its primary delivery format since 2018 for exactly this reason. Variable fonts benefit most: WOFF2 is the format they were designed to ship in, and every axis converts across cleanly.

OTF (Input)	WOFF2 (Output)
Uncompressed OpenType (often CFF)	Brotli + glyph-aware transform
Desktop install format	Web delivery format
Baseline file size	~50%+ smaller
Renders on desktop, not optimized for HTTP	Chrome 36+, Firefox 39+, Safari 12+, Edge 14+
Editable in Figma, Illustrator, font editors	97%+ global browser coverage
Variable axes supported	Variable axes fully preserved

From OTF upload to a deployed WOFF2 @font-face

Three steps move a font from desktop OTF to live WOFF2 webfont:

Upload the OTF — Drop the file on the converter or browse to it.
Conversion runs server-side — Brotli compression is applied while the CFF outlines, kerning tables, OpenType features, ligatures, stylistic alternates, and variable axes are preserved exactly. The OTF is removed from the server once the WOFF2 is delivered.
Download the WOFF2 and wire it in — A generated @font-face snippet comes with the file, ready to paste into a stylesheet.

A safe modern declaration looks like this:

@font-face {
  font-family: 'Your Font';
  src: url('/fonts/your-font.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

The format('woff2') hint tells the browser exactly what it is decoding. font-display: swap shows a fallback face while the WOFF2 loads, which keeps text visible during the request and holds layout shift down.

Frequently asked questions

Is the OTF to WOFF2 converter free?

Yes. It runs without an account, with no signup, paywall, or cap on the number of conversions.

Will kerning and OpenType features survive when I convert OTF to WOFF2?

They do. WOFF2 is a wrapper around the same OpenType data the source OTF already contains, including its CFF outlines, so kerning pairs, ligatures, stylistic alternates, and language features all carry through. The conversion is lossless and the rendered WOFF2 is identical to the source OTF.

Does the OTF to WOFF2 converter handle variable fonts?

Yes. Every axis is preserved in the WOFF2 output, including weight, width, slant, optical size, and any custom axes. WOFF2 is the delivery format variable fonts were built for.

Will the converted WOFF2 file work in every browser?

WOFF2 has been supported across current Chrome, Edge, Firefox, Safari, and Opera for years, covering more than 97% of global traffic. The remaining sliver sits on legacy browsers that predate Brotli, mostly older kiosk and embedded environments.

Is there a file size limit for the OTF?

Our font converter accepts an OTF up to 10 MB, which covers nearly every desktop font. Very large CJK or Indic families with extensive glyph sets take a moment longer to process but generally complete without issue.