Convert OpenType (OTF) to TrueType (TTF) Online Free
Convert OpenType fonts with CFF outlines to TrueType format for maximum compatibility. TTF fonts work everywhere — across operating systems, design software, and legacy applications that may not support OTF.
By ChangeThisFile Team · Last updated: March 2026
To convert OTF to TTF, drop your .otf file onto the ChangeThisFile converter. The font is processed entirely in your browser using opentype.js — no upload needed. CFF cubic Bezier outlines are converted to TrueType quadratic curves while preserving glyph shapes. Completely free and private.
Convert OpenType (OTF) to TrueType (TTF)
Drop your OpenType (OTF) file here to convert it instantly
Drag & drop your .otf file here, or click to browse
Convert to TrueType (TTF) instantly
OpenType (OTF) vs TrueType (TTF): Format Comparison
Key differences between the two formats
| Feature | OpenType (OTF) | TrueType (TTF) |
|---|---|---|
| Outline type | CFF (cubic Bezier curves) | Quadratic Bezier curves |
| Hinting | Type 1 hints (simpler) | Full TrueType hinting (grid-fitted) |
| Compatibility | Modern apps and browsers | Universal (all OS, all apps) |
| Rendering | Smoother curves, fewer points | More control points per glyph |
| Design software | Adobe, modern tools | All design and office apps |
| File size | Often smaller (CFF is compact) | Slightly larger (more points) |
| Legacy support | May fail in old software | Works in virtually all software |
When to Convert
Common scenarios where this conversion is useful
Installing fonts on systems that only support TTF
Some legacy operating systems, embedded devices, and older software require TrueType fonts. Converting OTF to TTF ensures compatibility across all platforms.
Using fonts in software that lacks OTF support
Certain applications, game engines, and embedded renderers only accept TTF fonts. Convert your OTF files to TTF to use them in these environments.
Preparing fonts for WOFF/WOFF2 conversion
Some web font workflows start from TTF as the base format. Convert OTF to TTF first, then to WOFF2 for web delivery.
Cross-platform font distribution
When distributing fonts to users on mixed platforms, TTF is the safest choice. It works on Windows, macOS, Linux, iOS, and Android without compatibility issues.
Who Uses This Conversion
Tailored guidance for different workflows
Web Developers
- Convert OpenType (OTF) fonts to TrueType (TTF) for optimized loading on websites with @font-face declarations
- Transform OpenType (OTF) font files to TrueType (TTF) for cross-browser compatibility in web projects
Graphic Designers
- Convert OpenType (OTF) fonts to TrueType (TTF) for embedding in design tools or desktop publishing software
- Transform OpenType (OTF) font files to TrueType (TTF) for use in print projects that require specific font formats
Typographers
- Convert OpenType (OTF) font files to TrueType (TTF) for testing and previewing typefaces across different platforms
- Transform OpenType (OTF) fonts to TrueType (TTF) for building multi-format font packages for distribution
How to Convert OpenType (OTF) to TrueType (TTF)
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1
Drop your OTF file
Drag and drop your .otf font file onto the converter, or click to browse. Both CFF-based and TrueType-based OTF files are accepted.
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2
Instant conversion
The font is parsed in your browser using opentype.js. CFF outlines are converted to TrueType quadratic curves, and all kerning, metrics, and naming data are carried over.
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3
Download your TTF file
Click Download to save the converted .ttf font file. Install it on your system or use it in any application that accepts TrueType fonts.
Frequently Asked Questions
The visual appearance is preserved as closely as possible. CFF cubic curves are approximated with TrueType quadratic curves. In practice, the difference is imperceptible at normal text sizes.
Yes. GSUB and GPOS features like ligatures, kerning, stylistic alternates, and small caps are stored in OpenType tables that work in both OTF and TTF formats.
TTF has broader compatibility. Some legacy systems, game engines, embedded devices, and older applications only support TrueType. TTF also has more mature hinting support for pixel-grid optimization.
CFF uses cubic Bezier curves while TTF uses quadratic curves. The conversion approximates cubics with quadratics, which may add control points but preserves the visual shape. At text sizes, the difference is invisible.
CFF Type 1 hints and TrueType hints are fundamentally different systems. CFF hints are not directly transferable to TrueType. The converted font may benefit from auto-hinting in a font editor for optimal screen rendering.
TTF files are typically slightly larger than CFF-based OTF files because quadratic curves need more control points to represent the same shapes. The increase is usually 10-20%.
Variable font support depends on the specific font structure. Simple variable fonts with compatible axes can be converted, but complex CFF2 variable fonts may require specialized tools.
Yes. The conversion happens entirely in your browser. No font data is sent to any server, making it safe for proprietary and licensed typefaces.
Yes. The output is a standard TTF file that can be installed on Windows, macOS, or Linux through the system's font management tools.
No. The CFF-to-TrueType outline conversion is lossy because quadratic curves are an approximation of cubic curves. Always keep your original OTF as the source file.
Related Conversions
Need to convert programmatically?
Use the ChangeThisFile API to convert OpenType (OTF) to TrueType (TTF) in your app. No rate limits, up to 500MB files, simple REST endpoint.
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