Convert TTF to OTF
Convert TTF to OTF free in your browser. No upload, no signup, no watermark. Files stay on your device.
drop a .ttf file
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how to convert ttf to otf
Drop your TTF file
Drag your TTF file into the drop zone above, or click the box to pick a file from your computer or phone. The browser reads the file directly — nothing uploads.
Click Convert
The page runs opentype.js on your device to decode the TrueType Font and encode it as OpenType Font. Most conversions finish in a few seconds; large or codec-heavy files (RAW, video) can take longer.
Download the OTF file
When the conversion finishes, the OTF file is ready to download. Save it anywhere on your device.
FAQ
common questions
What's the actual difference between TTF and OTF?
Both are 'sfnt' container formats holding font glyph data, but with different outline technology. TTF (TrueType, 1991) uses quadratic Bézier curves for glyph outlines. OTF (OpenType, 1996) extends the spec and can use either TrueType outlines or CFF (PostScript) outlines — the latter often described as 'cleaner' for fine typography. OTF also natively supports advanced typography features (ligatures, contextual alternates, stylistic sets).
Will my font look different after conversion?
Should be visually identical for typical use. The conversion preserves the same glyph outlines, kerning, and metrics — just rewraps in the other container's structure. Differences are typically invisible at typical text sizes. Sophisticated typography features (advanced ligatures, contextual substitution) may behave slightly differently depending on what was in the source and how the converter handled mapping.
Will my installed apps still recognise the font?
Yes — every modern OS and app handles both TTF and OTF natively. Adobe products, Microsoft Office, design tools (Figma, Sketch, Affinity), and OS font menus accept both. No re-installation tricks needed.
Why convert TTF to OTF specifically?
Usually one of: (a) a tool / pipeline you're using expects OTF specifically; (b) you want OpenType's advanced features available (though TTF can support most of them too via OpenType tables); (c) consolidating a font collection in one format. For most users, sticking with the source format is fine — modern OS / apps handle both transparently.
Does the converted OTF preserve hinting and kerning?
Hinting: yes, the kind that survives. TTF hinting is more sophisticated than OTF's CFF-based hinting in some respects; conversion preserves what translates. Kerning: yes, kerning pairs and tables transfer cleanly. For type designers who care about millisecond-level rendering nuances, the round-trip can occasionally cause subtle differences at small sizes; for regular use, none.