Does converting EOT to WOFF reduce quality?

No, converting EOT to WOFF does not reduce quality. WOFF uses lossless compression, meaning the font outlines, glyphs, and visual appearance remain identical to the original. Only the file size changes.

What file size reduction should I expect?

You can expect a file size reduction of 40-60% when converting EOT to WOFF. For example, a 150KB EMBEDDED OPENTYPE file typically compresses to around 60-90KB as WOFF due to gzip compression.

Do WOFF fonts work in all browsers?

WOFF fonts work in all modern browsers and most older ones. Support includes Chrome 36+, Firefox 39+, Safari 5.1+, Edge (all versions), and Internet Explorer 9+.

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 EOT different from WOFF?

Embedded OpenType (EOT) is a font format with specific use cases. Web Open Font Format (WOFF) is a web format with broad browser support. Choose based on your target platform and requirements.

What's the best format for my use case?

For modern websites, use WOFF as your primary format. Provide WOFF as a fallback for older browsers. For desktop applications, consider TTF or OTF.

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+).

EOT

WOFF

EOT to WOFF Converter

Convert Embedded OpenType to Web Open Font Format. 50 MB file size, unlimited uploads. Fast, secure, and completely private conversion.

EOT to WOFF50 MB File Size100% Free ForeverFastPrivateInstant Processing

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Only EOT 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 WOFF Format

Any Font to WOFF

About This Conversion

Everything you need to know about converting between these formats

Source Format

Embedded OpenType

Embedded OpenType (EOT) is a Microsoft format primarily used for older Internet Explorer browsers (IE6-IE8). It includes DRM features but is largely obsolete with modern browsers supporting WOFF/WOFF2.

Target Format

Web Open Font Format

Web Open Font Format (WOFF) is specifically optimized for web use with built-in compression. It's supported by all modern browsers and is ideal for websites. WOFF files are typically 40% smaller than their TTF/OTF equivalents.

Why Convert EOT to WOFF?

Deploying fonts for web applications with broad browser support

Reducing font file sizes for improved website performance

Ensuring compatibility with browsers from IE9 onwards

Creating web font kits for responsive design projects

How to Convert EOT to WOFF

Simple 3-step process that takes less than a minute

Upload Your Font

Select your EOT 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 WOFF file will be ready immediately. Download it and use it in your project.

EOT vs WOFF: Feature Comparison

Technical comparison between source and target formats

Feature	EOT	WOFF	Winner
File Size	130 KB	75 KB (-42%)	WOFF
Browser Support	IE6-11 only	All modern (IE9+)	WOFF
Compression	LZ (poor)	Gzip (good)	WOFF
User Coverage 2024	<0.01%	99%+	WOFF
Performance	Poor	Good	WOFF
Modernization	Obsolete	Modern standard	WOFF
Best For	Nothing (obsolete)	Modern web	WOFF

Frequently Asked Questions

Common questions about converting EOT to WOFF

1Why would I convert EOT to WOFF?

To modernize legacy IE-only web fonts. EOT only works in IE6-11; WOFF works in all modern browsers plus IE9+. If you have old EOT files, convert to WOFF for broader browser support while maintaining some IE compatibility (IE9-11).

2Does WOFF have better browser support than EOT?

Massively better. EOT only works in IE6-11 (ancient browsers). WOFF works in IE9+, Chrome, Firefox, Safari, Edge, and all mobile browsers from 2015+. WOFF covers 99%+ of current traffic; EOT covers maybe 0.1%.

3Will converting EOT to WOFF reduce file size?

Maybe slightly. Both use compression – EOT uses LZ, WOFF uses gzip. Files are often similar size. The real benefit is browser compatibility, not file size. For size reduction, convert to WOFF2 instead (25-30% smaller than WOFF).

4Can I replace EOT files with WOFF?

Yes, for most sites. WOFF supports IE9+, which covers 99.9% of remaining IE users. Only keep EOT if you absolutely must support IE6-8 (under 0.01% of traffic). For modern sites, use WOFF2 + WOFF and discard EOT completely.

5Should I convert EOT to WOFF or WOFF2?

Convert to both. WOFF2 for modern browsers (95%+ of traffic, 60-70% compression), WOFF for IE9-11 fallback (1% of traffic). Discard EOT unless analytics show IE6-8 users. This modernizes your font stack with proper compression.

6Does WOFF preserve all features from EOT?

Yes, and potentially enables more. EOT has limited OpenType support in old IE versions. WOFF fully preserves all features, and modern browsers actually render them properly. You might see better typography after converting from EOT.

7What's the best @font-face setup after converting EOT?

List formats as: WOFF2 (modern browsers), WOFF (IE9-11). Skip EOT unless you have confirmed IE6-8 traffic. This covers 99.9% of users with optimal compression. Format order: woff2, woff, (eot if absolutely necessary).

8Can I use WOFF in desktop applications?

No, WOFF is web-only. If you need desktop fonts from EOT, convert to TTF, not WOFF. For web deployment, convert EOT to WOFF/WOFF2. Keep separate files for desktop (TTF) and web (WOFF2/WOFF) use.

File Size Comparison

See how file sizes change after conversion

Original (EOT)	Converted (WOFF)	Change	Notes
130 KB (EOT)	75 KB (WOFF)	-42% smaller	Gzip more efficient than LZ
245 KB (EOT)	140 KB (WOFF)	-43% smaller	Consistent compression improvement
75 KB (EOT)	45 KB (WOFF)	-40% smaller	Better compression across sizes
480 KB (EOT)	260 KB (WOFF)	-46% smaller	Large files benefit most

Performance Metrics

Technical performance indicators for this conversion

File Size Reduction:40-45%
Gzip compression better than EOT's LZ compression
Browser Support Gain:+98% users
WOFF works in all modern browsers, not just IE
Page Load Improvement:150-300ms faster
Smaller files + broader support = better performance
Modern Compatibility:99%+ browsers
WOFF works everywhere; EOT only in IE6-11
Modernization Value:Critical
Essential upgrade from obsolete IE-only format
Maintenance Reduction:Significant
Replace IE-specific code with universal WOFF

Implementation Examples

Production-ready code for your converted fonts

Modernize EOT to WOFF

Replace IE-only fonts with modern formats

@font-face {
    font-family: 'Legacy IE Font';
    src: url('fonts/LegacyFont.woff2') format('woff2'),
         url('fonts/LegacyFont.woff') format('woff'),
         url('fonts/LegacyFont.eot') format('embedded-opentype');
    font-weight: normal;
    font-display: swap;
  }
  
  /* Modern approach - skip EOT if IE8 not needed */
  @font-face {
    font-family: 'Modernized Font';
    src: url('fonts/Modernized.woff2') format('woff2'),
         url('fonts/Modernized.woff') format('woff');
    font-weight: normal;
    font-display: swap;
  }

Browser Compatibility

Which browsers support WOFF fonts

Browser	Support	Notes
Chrome	6+ (WOFF)	Never supported EOT, always use WOFF
Firefox	3.6+ (WOFF)	Never supported EOT, always use WOFF
Safari	5.1+ (WOFF)	Never supported EOT, always use WOFF
Edge	All versions (WOFF)	Use WOFF, not EOT
IE	9+ (WOFF), 6-11 (EOT)	IE9+ supports WOFF (better); IE6-8 needs EOT
Opera	11.1+ (WOFF)	Never supported EOT, always use WOFF
iOS Safari	5+ (WOFF)	Never supported EOT, always use WOFF
Android Browser	4.4+ (WOFF)	Never supported EOT, always use WOFF
Chrome Mobile	All versions (WOFF)	Never supported EOT, always use WOFF
Samsung Internet	All versions (WOFF)	Never supported EOT, always use WOFF

Troubleshooting Common Issues

Solutions to problems you might encounter

WOFF file similar size or larger than EOT

Both use compression – EOT uses LZ, WOFF uses gzip. Sometimes they're similar size. The real benefit is browser compatibility, not file size. For size reduction, convert to WOFF2 instead (25-30% smaller than WOFF, 40-60% smaller than EOT).

Conversion fails with DRM error

EOT includes Microsoft's font DRM. Some converters can't extract WOFF from protected EOT files. Check the font license – commercial fonts may prohibit this conversion without proper web licensing.

WOFF doesn't work in IE8

WOFF requires IE9+. EOT works in IE6-8. If you need IE8 support, keep the EOT file. For modern browsers (IE9+), WOFF works and is better. For IE8 (virtually extinct), only EOT works.

OpenType features work better in WOFF

This is expected. WOFF has full OpenType support; EOT has limited support. Advanced features that didn't work in IE with EOT will work properly in modern browsers with WOFF. This is an improvement, not a problem.

Should I keep EOT or use WOFF?

Use WOFF (and WOFF2). EOT only supports IE6-11 (all obsolete). WOFF supports IE9+ and all modern browsers. Better: Convert to WOFF2 (modern browsers) + WOFF (IE9-11 fallback). Discard EOT unless you have IE6-8 users.

When NOT to Use WOFF

Scenarios where you should keep EOT or choose a different format

You still need IE6-8
Why not: WOFF doesn't work in IE6-8; EOT does
Use instead: Keep EOT for IE6-8 if needed, add WOFF for IE9+/modern browsers
You only want one format
Why not: Best practice is multiple formats for coverage
Use instead: Create WOFF + WOFF2; keep EOT only if IE8 in analytics
Font editing needed
Why not: WOFF is delivery format; should have TTF source
Use instead: Convert EOT to TTF first for editing, then to WOFF for web

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