Does converting TTF to OTF reduce quality?

Converting TrueType Font to OpenType Font preserves all font data including outlines, glyphs, and metrics. The conversion maintains the integrity of your font while adapting it for the target format.

What file size reduction should I expect?

File size changes depend on the specific conversion from TrueType Font to OpenType Font. OPENTYPE FONT files may be larger or smaller depending on the format's structure and metadata.

Do OTF fonts work in all browsers?

OTF fonts are supported by all modern operating systems and browsers for desktop use. For web use, consider converting to WOFF or WOFF2.

Will my font's OpenType features work after conversion?

Yes, all OpenType features are preserved during conversion. This includes ligatures, kerning pairs, alternate glyphs, small caps, and other advanced typography features. The conversion process adapts the container format while preserving all font data.

Can I convert commercial/licensed fonts?

You can convert commercial fonts for testing purposes, but you must purchase the appropriate web font license before using them on a live website. Font licenses are format-specific – a desktop license for one format doesn't automatically grant web usage rights. Always check your license agreement or contact the foundry.

How is TTF different from OTF?

TrueType Font (TTF) is a widely-supported format with quadratic Bézier curves. OpenType Font (OTF) is a professional format with advanced typography. Choose based on your target platform and requirements.

What's the best format for my use case?

For web use, convert to WOFF2 or WOFF instead. For desktop applications or print, OTF may be appropriate. Always check the requirements of your target platform.

Can I convert variable fonts?

Yes, variable fonts can be converted between formats while preserving all variation axes and design space. The conversion maintains the font's interpolation capabilities. Ensure your target browsers support variable fonts (Chrome 62+, Firefox 62+, Safari 11+).

TTF

OTF

TTF to OTF Converter

Convert TrueType Font to OpenType Font. 50 MB file size, unlimited uploads. Fast, secure, and completely private conversion.

TTF to OTF50 MB File Size100% Free ForeverFastPrivateInstant Processing

Upload Fonts

Drag and drop your font files here or click to browse

Only TTF files are accepted

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Max file size 50 MB.

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Disclaimer: This tool is provided as-is for convenience and does not constitute legal advice. Font licenses vary; you are responsible for ensuring you have the rights to upload and convert files and that your intended use is permitted. Converting a font does not grant new rights. Results may be imperfect, and use is at your own risk.

Developer & Verifier

Developed by

Marcus Rodriguez

Lead Developer

Verified by

Sarah Mitchell

Product Designer, Font Specialist

Convert Any Font Format

Universal Font Converter

Convert to OTF Format

Any Font to OTF

About This Conversion

Everything you need to know about converting between these formats

Source Format

TrueType Font

TrueType Font (TTF) is a widely-used font format developed by Apple and Microsoft. It's supported across all major operating systems and is commonly used for desktop applications. TTF files contain both the font outline data and bitmap data.

Target Format

OpenType Font

OpenType Font (OTF) is an extension of TrueType, offering advanced typographic features like ligatures and alternate glyphs. It supports more characters and is preferred for professional design work due to its superior font rendering capabilities.

Why Convert TTF to OTF?

Professional design work requiring advanced typography

Accessing extended character sets and ligatures

Desktop publishing with sophisticated font features

Creating high-quality print materials

How to Convert TTF to OTF

Simple 3-step process that takes less than a minute

Upload Your Font

Select your TTF font file from your computer or drag and drop it into the converter above.

Convert Instantly

Click the convert button and our tool will process your font file in server RAM only. Files are processed and immediately deleted - never written to disk.

Download Result

Your converted OTF file will be ready immediately. Download it and use it in your project.

TTF vs OTF: Feature Comparison

Technical comparison between source and target formats

Feature	TTF	OTF	Winner
File Size	150 KB (typical)	180 KB (+20%)	TTF
Browser Support	Limited (not for web)	Limited (not for web)	Equal
Desktop Support	Universal	Universal	Equal
OpenType Features	Full support	Full support	Equal
Curve Type	TrueType quadratic	PostScript cubic or TrueType	OTF
Compression	None	None	Equal
Legacy Support	Excellent	Good	TTF
Best For	Universal desktop use	Professional typography	Depends

Frequently Asked Questions

Common questions about converting TTF to OTF

1Will converting TTF to OTF improve quality?

No. TTF and OTF have identical rendering quality when using TrueType outlines. The common belief that "OTF is higher quality" stems from confusion with PostScript-based OTF fonts, which use different outline technology. Converting TTF to OTF doesn't change the outline format – it just changes the file wrapper.

2Why would I convert TTF to OTF?

The main valid reasons are: (1) Specific software explicitly requires OTF format, (2) Your workflow uses PostScript-based tools that prefer OTF, (3) Client deliverable contract specifies OTF, or (4) You're testing if OTF fixes a specific compatibility issue. Outside these cases, there's typically no benefit.

3Does OTF have better web performance than TTF?

No, OTF files are typically 10-30% LARGER than TTF for the same font due to additional metadata overhead. For web use, convert to WOFF or WOFF2 instead, not OTF. Google Fonts exclusively uses TTF/WOFF/WOFF2 formats, not OTF, specifically for better web performance.

4Is OTF better for print?

Not necessarily. Modern print workflows (Adobe InDesign, PDF/X standards) handle both TTF and OTF equally well. The format matters less than proper font embedding and color management. Don't convert just because you think "OTF is more professional" – it's a common misconception.

5Will I lose font features converting TTF to OTF?

No, all OpenType features (ligatures, kerning, stylistic alternates, small caps) are preserved during conversion. However, the file size will increase by 10-30% because OTF has more metadata overhead than TTF, with no actual functional benefit.

6Does Adobe software prefer OTF?

No, this is a widespread myth. Adobe Illustrator, InDesign, and Photoshop work identically with TTF and OTF fonts. Adobe themselves distribute fonts in both formats depending on the typeface. Choose based on your actual requirements, not assumptions.

7Should I convert my font library to OTF?

Generally not recommended. There's no benefit to mass-converting TTF to OTF. Files get 10-30% larger with no quality or feature improvements. Only convert specific fonts when required by specific software or client contracts.

8What's the real difference between TTF and OTF?

Technically, OTF can use either TrueType outlines (like TTF) or PostScript outlines (CFF). When converting TTF to OTF, you keep TrueType outlines, so the only difference is the file wrapper and slightly larger file size. No quality difference, no feature difference, just larger files.

File Size Comparison

See how file sizes change after conversion

Original (TTF)	Converted (OTF)	Change	Notes
100 KB (TTF)	120 KB (OTF)	+20% larger	OTF has additional metadata overhead
250 KB (TTF)	310 KB (OTF)	+24% larger	Larger fonts see proportional increase
50 KB (TTF)	58 KB (OTF)	+16% larger	Small fonts have less overhead difference
500 KB (TTF)	640 KB (OTF)	+28% larger	Complex fonts with many glyphs

Performance Metrics

Technical performance indicators for this conversion

Desktop Performance:Identical
No performance difference in desktop applications
File Size Impact:+10-30% larger
OTF has metadata overhead vs TTF
Rendering Speed:Same
Both render at identical speeds in apps
Application Compatibility:Excellent
Both work in all modern desktop software
Font Loading Time:<100ms
Both load nearly instantly from local storage
Memory Usage:Similar
Minimal difference in RAM consumption

Implementation Examples

Production-ready code for your converted fonts

Desktop Font Installation

Installing OTF fonts on your system

/* OTF Font Installation Instructions
   * 
   * Windows:
   * 1. Right-click the .otf file
   * 2. Click "Install" or "Install for all users"
   * 3. Font available in all applications
   *
   * macOS:
   * 1. Double-click the .otf file
   * 2. Click "Install Font" in Font Book
   * 3. Font available system-wide
   *
   * Linux:
   * 1. Copy .otf file to ~/.fonts/ or /usr/share/fonts/
   * 2. Run: fc-cache -f -v
   * 3. Font available in all applications
   *
   * Use in applications:
   * Select "Your Font Name" from font dropdown
   */

Browser Compatibility

Which browsers support OTF fonts

Browser	Support	Notes
Desktop Use	N/A	OTF is for desktop applications, not web browsers
Windows	All versions	Full OTF support in all Windows versions
macOS	All versions	Full OTF support in all macOS versions
Linux	All distros	Full OTF support in modern Linux
Applications	Universal	Works in Photoshop, Word, InDesign, etc.

Troubleshooting Common Issues

Solutions to problems you might encounter

File got larger instead of smaller

This is NORMAL and EXPECTED. OTF files are typically 10-30% larger than TTF due to additional metadata overhead. OTF uses a different file structure that includes more metadata. If file size is a concern, this conversion might not be beneficial – only convert if you specifically need OTF for compatibility reasons.

Software doesn't recognize the converted OTF

Some software is very picky about OTF structure. Try using a different conversion tool or re-saving the OTF in font editing software (FontForge, FontLab). Ensure the OTF file is using TrueType outlines (not PostScript), as some software only accepts TrueType-flavored OTF.

Print output looks the same as TTF

That's because it IS the same. Converting TTF to OTF doesn't improve print quality – this is a common misconception. Print quality depends on the outline data (which remains unchanged) and your print workflow settings, not whether the file extension is .ttf or .otf.

Lost some OpenType features after conversion

Check if the original TTF actually had those features using a font inspector. Not all TTF fonts include advanced OpenType features. If features were present in TTF but missing in OTF, try a different conversion tool or font editing software to preserve the feature tables.

Converted OTF doesn't work on web

OTF is not optimized for web use – it's uncompressed and larger than WOFF/WOFF2. While browsers technically support OTF, you should convert to WOFF2/WOFF instead for web deployment. OTF is for desktop use only.

When NOT to Use OTF

Scenarios where you should keep TTF or choose a different format

File size is a concern
Why not: OTF files are 10-30% larger than TTF due to additional metadata overhead
Use instead: Keep TTF for smaller file sizes and broader compatibility
Maximum compatibility needed
Why not: TTF has slightly broader support in older software and embedded systems
Use instead: Use TTF for universal compatibility across all platforms
Web deployment
Why not: Neither TTF nor OTF are optimized for web use - both are uncompressed
Use instead: Convert to WOFF2 for web, keep TTF/OTF for desktop only
You need better print quality
Why not: TTF and OTF have identical print quality - the format doesn't affect output
Use instead: Keep TTF; print quality is determined by the font design, not format
Working with simple fonts
Why not: If your TTF doesn't have advanced OpenType features, OTF offers no benefits
Use instead: Keep TTF; only convert if you need specific OTF-only features

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