Is it legal to convert a font I bought?

Converting for your own use is usually fine; publishing the result depends entirely on the licence. Many commercial licences cover desktop use only and charge separately for web embedding. Read the licence that came with the font — conversion does not change what it permits.

Will converting lose typographic features?

Glyph outlines and metadata are preserved. OpenType features such as ligatures and stylistic alternates generally survive, but a format that cannot express a particular table will drop it. Test the converted font with the specific features you rely on.

Should I still serve WOFF alongside WOFF2?

Only if your analytics show meaningful traffic from browsers older than roughly 2016. For most sites WOFF2 alone is sufficient, and the extra file is dead weight.

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Font Converter

Font conversion rewrites the same glyph outlines into a different wrapper. TTF and OTF are desktop formats; WOFF and WOFF2 are the same data compressed for delivery over the web.

Converting a font does not change its licence. That is the single most important thing to understand before putting a converted font on a website.

On your deviceNever uploadedGone when you close the tabHow this works

Most used font converters

TTF → WOFF2On your device · 40 MB

All font conversions

9 supported conversions. Every one is a working converter, not a placeholder.

Font formats explained

TrueType Font

.ttf

The classic desktop font format.

Best for: Desktop installation · Design software

OpenType Font

.otf

OpenType with advanced typographic features.

Best for: Professional typography · Ligatures and alternates

Web Open Font Format

.woff

Compressed font wrapper built for the web.

Best for: Web fonts with legacy browser support

Web Open Font Format 2

.woff2

Brotli-compressed web font — around 30% smaller than WOFF.

Best for: Modern web fonts · Fast page loads

Which format to serve on the web

WOFF2. It uses Brotli compression, is roughly 30% smaller than WOFF, and is supported by every browser you are realistically targeting.

Serving TTF or OTF to browsers works but wastes bandwidth, because those formats are uncompressed. WOFF is only worth including as a fallback if you must support browsers from before about 2016.

Licensing, which matters more than the format

Many commercial font licences price desktop use and web embedding separately. Converting a desktop-licensed font to WOFF2 does not grant you the right to serve it on a website, and doing so is a licence violation regardless of how the file was produced.

Open-licensed fonts — SIL Open Font License, Apache, and similar — generally permit both. Check the licence file that came with the font before publishing.

Subsetting beats format conversion

A font containing every Latin, Cyrillic and Greek glyph is far larger than one containing only the characters your site actually uses. Subsetting typically saves more than switching format does.

If page weight is the concern, subset first and then convert to WOFF2.

FAQ

Font conversion questions

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