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Drop one OTF or two hundred. Batch conversion is not a paid feature here.
Convert OTF to TTF
A cutting machine, an embroidery program, a game engine or an older application refuses to load an OTF.
SafeConvert engineFreeNo sign-upBatch supported
Waiting for files/Engine: on-device/Network requests made: 0
What actually changes
OTF and TTF are not the same picture in two wrappers.
This is a real change to the outlines. OTF stores cubic Bezier curves in a CFF table; TTF stores quadratic curves in a glyf table. Every curve has to be re-approximated in the other mathematics.
Worth knowing first
The quadratic approximation is close but not exact. Deviations are sub-pixel at text sizes and can become visible at very large display sizes or when the outline is used for cutting or engraving, so check a converted font at the size it will actually be used.
Questions
OTF to TTF, answered
Do OpenType features survive?
Ligatures, kerning and alternates live in GSUB and GPOS tables, which both formats share, so they normally carry across intact.
Why do some apps refuse OTF?
They implement only TrueType outline rendering and have no CFF rasteriser. It is a limitation of the application, not of the font.
How to convert OTF to TTF
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Choose your settings
TrueType Font is lossless, so nothing is thrown away in the conversion.
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Download
Converted and deleted the moment it finishes. Never written to permanent storage.