Convert TrueType (TTF) to WOFF Online Free
Convert TrueType font files to Web Open Font Format for optimized web delivery. WOFF wraps your TTF data with compression and metadata, reducing file size while keeping full glyph fidelity. No software installation required.
To convert TTF to WOFF, drop your .ttf file onto the ChangeThisFile converter. The font is processed entirely in your browser using opentype.js — no file upload required. WOFF applies zlib compression to your TrueType data, producing a smaller file optimized for web use. Free and completely private.
Convert TrueType (TTF) to WOFF
Drop your TrueType (TTF) file here to convert it instantly
Drag & drop your .ttf file here, or click to browse
Convert to WOFF instantly
TrueType (TTF) vs WOFF: Format Comparison
Key differences between the two formats
| Feature | TrueType (TTF) | WOFF |
|---|---|---|
| Compression | None (raw outlines) | zlib compressed (30-50% smaller) |
| Browser support | Supported via @font-face | All modern browsers since 2010 |
| Primary use | Desktop apps and OS installation | Web font delivery |
| Metadata | Standard font tables only | Extended metadata block for licensing |
| File size | Larger uncompressed | Significantly smaller due to compression |
| Hinting | Full TrueType hinting preserved | Hinting data preserved inside wrapper |
| Installation | Can install system-wide | Designed for browser use only |
When to Convert
Common scenarios where this conversion is useful
Optimizing fonts for website loading speed
Convert desktop TTF fonts to WOFF to reduce bandwidth and improve page load times. WOFF compression typically cuts font file size by 30-50% compared to raw TTF.
Adding custom fonts to a web project
If you have licensed TTF fonts for your brand, convert them to WOFF for use in @font-face CSS rules across your website.
Supporting older browser environments
WOFF has near-universal browser support since 2010 and is the right choice when you need to support older browsers that lack WOFF2 support.
Bundling fonts in web applications
Convert TTF fonts to WOFF for inclusion in web apps, Electron apps, or progressive web apps where smaller asset size improves startup performance.
How to Convert TrueType (TTF) to WOFF
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1
Drop your TTF file
Drag and drop your .ttf font file onto the converter, or click to browse your files. TrueType font files typically come from font foundries or your operating system's font library.
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2
Instant conversion
The font is parsed and repackaged as WOFF entirely in your browser using opentype.js. Glyph outlines, hinting, kerning, and all font tables are preserved.
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3
Download your WOFF file
Click Download to save the converted .woff file. Use it in your CSS @font-face declarations for web font delivery.
Frequently Asked Questions
Yes. WOFF is a container format that wraps the original TrueType data with compression. All glyphs, kerning pairs, hinting instructions, and OpenType features are preserved exactly.
WOFF typically reduces file size by 30-50% compared to the raw TTF, depending on the font's complexity and number of glyphs. The savings come from zlib compression applied to the font tables.
All modern browsers support WOFF, including Chrome, Firefox, Safari, Edge, and Opera. WOFF has been widely supported since around 2010-2011.
WOFF2 offers better compression (Brotli vs. zlib) and is supported by all modern browsers. Use WOFF2 as your primary format and include WOFF as a fallback for older browsers if needed.
Yes. If your TTF has already been subsetted to include only certain characters, the WOFF output will contain the same subset. This converter does not add or remove glyphs.
The conversion does not change the font's license terms. If your TTF font license permits web use, the converted WOFF file inherits the same permissions. Always check your font license.
No. TrueType hinting instructions are preserved inside the WOFF wrapper. The font will render with the same quality and screen optimization as the original TTF.
Yes. The entire conversion happens in your browser using JavaScript. Your font file is never uploaded to any server, so your licensed fonts remain completely private.
Yes. Variable font axes, instances, and variation tables are preserved during conversion. The WOFF output will function as a variable font just like the original TTF.
Both work in @font-face CSS rules, but WOFF is compressed and transfers faster over the network. WOFF also includes a metadata block where font foundries can embed licensing information.
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