Convert WOFF to WOFF2 Online Free
Upgrade your web fonts from WOFF to WOFF2 for better compression and faster loading. WOFF2 uses Brotli encoding instead of zlib, delivering 20-30% smaller files with the same visual fidelity.
By ChangeThisFile Team · Last updated: March 2026
To convert WOFF to WOFF2, drop your .woff file onto the ChangeThisFile converter. The font data is decompressed from zlib and recompressed with Brotli encoding entirely in your browser using opentype.js. The result is a smaller WOFF2 file with identical font quality. Free, private, no upload required.
Convert WOFF to WOFF2
Drop your WOFF file here to convert it instantly
Drag & drop your .woff file here, or click to browse
Convert to WOFF2 instantly
WOFF vs WOFF2: Format Comparison
Key differences between the two formats
| Feature | WOFF | WOFF2 |
|---|---|---|
| Compression | zlib | Brotli (with font preprocessing) |
| Typical file size | Baseline | 20-30% smaller than WOFF |
| Browser support | All modern browsers + IE9+ | All modern browsers (95%+ global) |
| W3C status | W3C Recommendation (2012) | W3C Recommendation (2018) |
| Decompression speed | Fast | Very fast (optimized for browsers) |
| Metadata support | Extended metadata block | Extended metadata block |
| Font data fidelity | Lossless wrapper | Lossless wrapper (identical data) |
When to Convert
Common scenarios where this conversion is useful
Upgrading legacy web font stacks
If your website still serves WOFF as the primary format, convert to WOFF2 to take advantage of Brotli's superior compression. Serve WOFF2 first with WOFF as fallback.
Reducing web font bandwidth
WOFF2 delivers 20-30% smaller files than WOFF. For high-traffic sites, this translates to measurable bandwidth savings and faster font loading.
Improving page load performance
Smaller font files mean less time spent downloading fonts, reducing render-blocking time and improving metrics like First Contentful Paint and LCP.
Modernizing a font delivery pipeline
If your build system or CDN has WOFF files, convert them to WOFF2 to modernize your font delivery without going back to TTF/OTF source files.
Who Uses This Conversion
Tailored guidance for different workflows
Web Developers
- Convert WOFF fonts to WOFF2 for optimized loading on websites with @font-face declarations
- Transform WOFF font files to WOFF2 for cross-browser compatibility in web projects
Graphic Designers
- Convert WOFF fonts to WOFF2 for embedding in design tools or desktop publishing software
- Transform WOFF font files to WOFF2 for use in print projects that require specific font formats
Typographers
- Convert WOFF font files to WOFF2 for testing and previewing typefaces across different platforms
- Transform WOFF fonts to WOFF2 for building multi-format font packages for distribution
How to Convert WOFF to WOFF2
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1
Drop your WOFF file
Drag and drop your .woff font file onto the converter, or click to browse. Any standard WOFF file is accepted regardless of whether it contains CFF or TrueType data.
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2
Instant conversion
The font data is extracted from the WOFF container, then repackaged with Brotli compression as WOFF2. All glyph outlines, kerning, and OpenType features are preserved.
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3
Download your WOFF2 file
Click Download to save the recompressed .woff2 file. Update your CSS @font-face to include the WOFF2 source with format('woff2').
Frequently Asked Questions
WOFF2 is typically 20-30% smaller than WOFF for the same font. The improvement comes from Brotli's superior compression and font-specific preprocessing that optimizes data layout before compression.
No. Both WOFF and WOFF2 are lossless container formats. Converting between them preserves all glyph outlines, kerning, OpenType features, and metadata exactly.
Yes, if you need to support IE9-11 or very old mobile browsers. List WOFF2 first in your @font-face src, then WOFF: src: url('font.woff2') format('woff2'), url('font.woff') format('woff').
All browsers that support WOFF2 also support WOFF. The reverse is not true — IE9-11 support WOFF but not WOFF2. So WOFF2 is not a replacement but an upgrade for modern browsers.
No. The font renders identically in both formats. WOFF and WOFF2 only differ in how the container compresses the data, not in the font data itself.
Yes. The conversion happens entirely in your browser. No font data is sent to any server. Your licensed and proprietary fonts remain completely private.
The converter processes one file at a time. Convert each WOFF weight or style separately to get the corresponding WOFF2 files.
Yes. WOFF2 fully supports variable fonts. If your WOFF file contains variable font data, it will be preserved in the WOFF2 output.
You need to add or update the @font-face src to reference the new WOFF2 file. Add a src entry with format('woff2') before your existing WOFF entry.
Yes. All major CDNs (Cloudflare, CloudFront, Fastly, Akamai) serve WOFF2 files with the correct application/font-woff2 content type. WOFF2 is the industry standard for modern web font delivery.
Related Conversions
Need to convert programmatically?
Use the ChangeThisFile API to convert WOFF to WOFF2 in your app. No rate limits, up to 500MB files, simple REST endpoint.
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