WOFF to WOFF2 Converter - Free Online Tool

Convert WOFF to WOFF2 instantly in your browser. Free online font converter with no signup or software required. Upload, convert, and download your WOFF2 file in seconds.

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Convert woff to woff2

woffwoff2

Drop your WOFF file here

or browse files · Max 10 MB

.woff

What happens when you convert WOFF to WOFF2?

WOFF and WOFF2 hold the same font; they differ in how that data is compressed.

WOFF, introduced in 2009, wraps the same OpenType data in zlib compression. WOFF2, finalized as a W3C Recommendation in 2018, takes that identical data and recompresses it with Brotli plus a glyph-aware transform that reorders the tables so they pack down harder.

The conversion is lossless. The source WOFF is decompressed, then the same glyph data is recompressed with the stronger method. Every kerning pair, OpenType feature, and variable axis carries across, and the font renders identically on screen.

The gain is size. A WOFF2 typically lands around 30% smaller than the WOFF it came from, which on a font already trimmed for the web is a worthwhile reduction — smaller transfer, faster load, less time blocking the first paint of text.

Why upgrade a WOFF to WOFF2?

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. Every browser that supports it prefers it, which means shipping WOFF2 lets most visitors download the smaller file automatically.

For the large majority of sites, WOFF2 can be the only web font format in the stack.

The one reason to keep a WOFF around is legacy reach. WOFF supports browsers back to Internet Explorer 9, which WOFF2 does not. If a real slice of the audience sits on those older browsers, the answer is not to stay on WOFF but to serve both: WOFF2 first for the browsers that can read it, WOFF second as a fallback for the ones that cannot.

For everyone else, converting to WOFF2 and dropping the WOFF entirely is the leaner, faster choice.

WOFF (Input)	WOFF2 (Output)
zlib compression	Brotli + glyph-aware transform
Larger file	~30% smaller
Original web font format (2009)	Modern default (2018)
All browsers, including IE9+	Chrome 36+, Firefox 39+, Safari 12+, Edge 14+
99%+ global browser coverage	97%+ global browser coverage
Variable axes supported	Variable axes fully preserved

From WOFF upload to a deployed WOFF2 @font-face

Three steps move a font from an older WOFF to a lighter WOFF2:

Upload the WOFF — Drop the file on the font converter or browse to it.
Conversion runs server-side — The glyph data is recompressed with Brotli while every kerning table, OpenType feature, ligature, stylistic alternate, and variable axis is preserved exactly. The WOFF 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.

For a modern audience, WOFF2 can stand alone:

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

If legacy browsers still matter, keep the original WOFF as a second source after the WOFF2 in the same rule. The format() hints let each browser take the file it can decode, and font-display: swap shows a fallback face while the webfont loads, which keeps text visible during the request and holds layout shift down.

Frequently asked questions

Is the WOFF to WOFF2 converter free?

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

Why convert WOFF to WOFF2?

To make the file smaller. WOFF2 uses Brotli compression and lands about 30% under the same WOFF, so a site serving WOFF2 delivers a lighter font, faster loads, and quicker first paint — while still covering 97%+ of browsers.

Will the WOFF2 be smaller than the WOFF?

Yes, typically around 30% smaller. WOFF2 uses Brotli plus a glyph-aware transform, which packs the same font data more tightly than the zlib compression WOFF relies on.

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

They do. Both formats wrap the same OpenType data, 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 WOFF.

Do I still need the old WOFF after converting?

Only if a real part of the audience uses browsers older than around 2014, which WOFF2 does not reach. In that case, serve WOFF2 first and the WOFF as a fallback. Otherwise WOFF2 alone is enough.

Is there a file size limit for the WOFF?

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