Free online font converter
Convert OTF to TTF Online
Convert an OpenType CFF (OTF) font to TrueType (TTF) in your browser, for software that only accepts TTF. Nothing is uploaded.
Font converter
Ready when you are.
Private by design · no file upload
1. Add your fonts
Up to 25 MB per file3. Convert and download
Select a font to get started.
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How to convert OTF to TTF
- Add the OTF file, or the whole family.
- TTF is preselected as the output format.
- Convert and download the TTF, or a ZIP with every converted file.
When an app only takes TTF
Some software accepts TrueType fonts only. Converting turns the cubic CFF curves into the quadratic curves TrueType uses.
Cubic curves can only be approximated with quadratic ones. The converter keeps the difference within half a font unit, far less than a pixel at normal text sizes.
Before you convert OTF to TTF
- CFF hints are not turned into TrueType hinting, so small text may render a little differently on Windows.
- Kerning, ligatures, and the other OpenType features are copied over from the OTF.
- For websites, convert the OTF to WOFF2 instead. It keeps every feature.
Why some software insists on TrueType
Most current apps accept both formats, but some older applications, devices, and production pipelines only read TrueType outlines. Converting gives them a TTF with the same letter shapes, as close as quadratic curves allow.
Keep the OTF as your master copy. Every round trip between the two outline formats is a rebuild, and the curves are approximated again each time.
Avoid installing the TTF alongside the OTF of the same family on one computer. Both carry the same names, so apps may list the family twice or pick the version you did not mean.
Why the TTF is bigger
Quadratic curves need more points than cubic ones to describe the same shape, and the TrueType format stores them less compactly than CFF. In our test, STIX General grew from 361 KB as OTF to 491 KB as TTF, about 36% larger.
That only matters if you ship the TTF somewhere size counts. For websites, convert the OTF to WOFF2 instead; it stays smaller and keeps every OpenType feature.
OTF to TTF questions
Will the TTF have hinting?
No. CFF hints work differently and are not translated into TrueType instructions. If crisp small text on Windows matters, the font needs hinting added with a dedicated tool such as ttfautohint.
Are the font’s names and license text kept?
Yes. After rebuilding the outlines, the converter restores the original name table, so the family name, designer, and license notices carry over.
Can I convert a variable OTF to TTF?
No. A variable font with CFF2 outlines would lose its axes when rebuilt as TrueType, so TTF output is turned off for it.