TTF to OTF Converter
Convert TrueType (.ttf) fonts to OpenType (.otf) online for free — batch conversion, right in your browser, with no uploads.
100% private — runs entirely in your browser. Your files never leave your device.
Rebuilds the font with OpenType/CFF (PostScript) outlines. Because TrueType curves are re-drawn as cubic curves, outlines may shift very slightly and TrueType hinting isn’t preserved — ideal for web and display use. Everything runs in your browser; your fonts are never uploaded.
How to use the TTF to OTF Converter
- Drop your .ttf file(s) onto the box, or click to choose.
- The font is rebuilt with OpenType/CFF outlines.
- Download each .otf file, or all as a ZIP.
What you can use it for
- Convert TrueType fonts to OpenType
- Prepare fonts for apps that prefer OTF
- Batch-convert a whole font family
- Keep fonts private — no uploads
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See all free font & text tools →Frequently asked questions
What's the difference between TTF and OTF?
Both are OpenType fonts; TTF uses TrueType (quadratic) outlines while OTF here uses CFF/PostScript (cubic) outlines. This tool rebuilds the font with CFF outlines.
Is the conversion lossless?
Not exactly — TrueType curves are re-drawn as cubic curves, so outlines can shift very slightly and TrueType hinting isn't preserved. It's ideal for web and display use.
Can I convert several fonts at once?
Yes — drop multiple .ttf files and download them individually or all together as a ZIP.
Is my font uploaded?
No — conversion runs entirely in your browser; your fonts never leave your device.