01
Convert only when required
Keep the original TTF when your software already supports it. Use OTF output for a specific compatibility need.
Convert TTF to OTF Online
Free TTF to OTF converter
Create OTF output from a TrueType font
Convert TTF files for software or workflows that specifically request OTF. We verify the generated font and identify detectable changes.
- OTF outputPrepare files for applications or delivery rules that require .otf
- Outline awarenessThe report tells you when the underlying outline type changed
- Coverage comparisonUnicode characters and glyph counts are checked after conversion
Following error occurred:
Your OTF fonts are ready
Download the files, review warnings and test them in the application that requested OTF.
Conversion report
A quick comparison of each source font and its converted result. The same report is included in the ZIP.
| Source | Converted file | Characters | File size | Integrity check |
|---|
Before you download
TTF and OTF are not quality levels
Both formats can contain advanced OpenType data. Changing the extension does not automatically improve a font, and some conversions require outline rebuilding.
02
Watch outline changes
TrueType and PostScript-style outlines use different curve models. A rebuild can introduce small differences.
03
Compare advanced typography
Test kerning, ligatures, scripts and variable axes that matter to your project, even when basic characters match.
TTF to OTF questions
Is OTF always better than TTF?
No. Both can be high-quality OpenType fonts. The best choice depends on the source and what your software or publishing workflow accepts.
Will conversion add OpenType features?
No. Conversion cannot invent ligatures, language support or other features missing from the TTF source.
Can the outlines change?
Yes, when the requested container requires an outline conversion. The report identifies a detectable outline-type change so you can review it.