Does converting OTF to EOT reduce quality?

Converting OpenType Font to Embedded OpenType 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 OpenType Font to Embedded OpenType. EMBEDDED OPENTYPE files may be larger or smaller depending on the format's structure and metadata.

Do EOT fonts work in all browsers?

EOT is only supported by Internet Explorer browsers (IE6-IE11). No other browsers support EOT natively.

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 OTF different from EOT?

OpenType Font (OTF) is an advanced format supporting cubic Bézier curves and OpenType features. Embedded OpenType (EOT) is a format for specific applications. 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, EOT 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+).

OTF

EOT

OTF to EOT Converter

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

OTF to EOT50 MB File Size100% Free ForeverFastPrivateInstant Processing

Upload Fonts

Drag and drop your font files here or click to browse

Only OTF 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 EOT Format

Any Font to EOT

About This Conversion

Everything you need to know about converting between these formats

Source 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.

Target 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.

Why Convert OTF to EOT?

Supporting Internet Explorer 6-8 browsers

Maintaining compatibility with legacy corporate systems

Working on projects requiring old browser support

Converting historical web font implementations

How to Convert OTF to EOT

Simple 3-step process that takes less than a minute

Upload Your Font

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

OTF vs EOT: Feature Comparison

Technical comparison between source and target formats

Feature	OTF	EOT	Winner
File Size	180 KB	155 KB (-14%)	EOT
Browser Support	Limited	IE6-11 only	Neither
Desktop Support	Universal	None	OTF
Modern Browsers	Supported	None	OTF
Obsolescence	Modern format	Completely obsolete	OTF
User Coverage 2024	Universal	<0.01%	OTF
Best For	Any desktop use	Nothing (obsolete)	OTF

Frequently Asked Questions

Common questions about converting OTF to EOT

1Why would I convert OTF to EOT?

EOT is only needed for Internet Explorer 8 and earlier (less than 0.1% of traffic). Unless you're maintaining a legacy corporate intranet locked to IE8, don't bother. Use WOFF2/WOFF instead, which cover 99.9% of browsers.

2Does EOT support PostScript outlines from OTF?

EOT typically converts PostScript outlines to TrueType during conversion. This is lossless visually, but the underlying mathematics changes. Since EOT is legacy technology, this limitation doesn't matter for modern use.

3Will I lose OpenType features?

Partially. EOT has limited OpenType support. Basic features like kerning work, but advanced features (stylistic sets, contextual alternates) may not render properly in IE. This is an IE limitation, not just EOT.

4Should I include EOT in modern websites?

No. EOT is obsolete. Check your analytics – if you have zero IE8 traffic (most sites do), skip EOT entirely. Use WOFF2 + WOFF instead. Even if you support IE11, you only need WOFF, not EOT.

5How large is EOT compared to OTF?

EOT with compression can be 20-40% smaller than OTF, but it's still much larger than WOFF2 (which is 60-70% smaller). EOT's compression is outdated and inefficient compared to modern formats.

6Does EOT work in any modern browser?

No. Chrome, Firefox, Safari, and Edge (Chromium) all dropped EOT support or never added it. Only Internet Explorer 6-11 supports EOT. It's a dead format for dead browsers.

7Can I convert Adobe OTF fonts to EOT?

Technically yes, but check your license first. Adobe's desktop license doesn't grant web rights. Also, EOT is obsolete – even if licensed for web use, convert to WOFF2/WOFF instead for modern browser support.

8What's the best @font-face stack for OTF fonts?

Convert OTF to WOFF2 and WOFF. Use this order in @font-face: WOFF2 (modern browsers), WOFF (IE9-11). Skip EOT unless you absolutely must support IE8, which is extremely rare in 2024.

File Size Comparison

See how file sizes change after conversion

Original (OTF)	Converted (EOT)	Change	Notes
180 KB (OTF)	155 KB (EOT)	-14% smaller	EOT conversion includes format change
350 KB (OTF)	285 KB (EOT)	-19% smaller	Moderate LZ compression
100 KB (OTF)	92 KB (EOT)	-8% smaller	Small files compress less
700 KB (OTF)	560 KB (EOT)	-20% smaller	Consistent compression ratio

Performance Metrics

Technical performance indicators for this conversion

File Size Change:12-18% smaller
EOT uses LZ compression on OTF data
Browser Support:<1% users
Only IE6-11, all obsolete browsers
Performance Impact:Negative
Larger than WOFF2, only works in dead browsers
Modern Relevance:None
Skip EOT; use WOFF2 + WOFF for modern + legacy support
Maintenance Burden:High
Extra format for essentially zero users

Implementation Examples

Production-ready code for your converted fonts

OTF to EOT for Legacy IE

Complete fallback chain from OTF

@font-face {
    font-family: 'Corporate OTF Font';
    src: url('fonts/Corporate.eot');
    src: url('fonts/Corporate.eot?#iefix') format('embedded-opentype'),
         url('fonts/Corporate.woff2') format('woff2'),
         url('fonts/Corporate.woff') format('woff'),
         url('fonts/Corporate.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
  }

Browser Compatibility

Which browsers support EOT fonts

Browser	Support	Notes
Chrome	No support	Never supported, use WOFF/WOFF2
Firefox	No support	Never supported, use WOFF/WOFF2
Safari	No support	Never supported, use WOFF/WOFF2
Edge (Chromium)	No support	Legacy Edge supported EOT, new Edge does not
IE	6-11	Only browser that supports EOT
Opera	No support	Never supported, use WOFF/WOFF2
iOS Safari	No support	Never supported, use WOFF/WOFF2
Android Browser	No support	Never supported, use WOFF/WOFF2
Chrome Mobile	No support	Never supported, use WOFF/WOFF2
Samsung Internet	No support	Never supported, use WOFF/WOFF2

Troubleshooting Common Issues

Solutions to problems you might encounter

EOT doesn't work in modern browsers

EOT only works in IE6-11. Chrome, Firefox, Safari, Edge (Chromium) don't support it. Use WOFF/WOFF2 for modern browsers. EOT should only be a last-resort fallback for ancient IE versions.

PostScript outlines converted

EOT doesn't support PostScript (CFF) outlines. Conversion to EOT converts PostScript to TrueType. This is visually lossless but changes the underlying math. Since EOT is obsolete anyway, this limitation doesn't matter for practical use.

OpenType features don't work

EOT has limited OpenType support. Advanced features may not render in IE even with proper EOT files. Basic kerning works, but stylistic sets, contextual alternates often fail. This is an IE/EOT limitation, not a conversion issue.

File size larger than expected

EOT compression (LZ) is less efficient than WOFF2 (Brotli). EOT files are often 20-40% larger than WOFF. This is normal for EOT. For better compression, use WOFF2 instead – it's 60-70% smaller than OTF and works in modern browsers.

Licensing/DRM errors

EOT includes Microsoft's font DRM system. Some font licenses prohibit EOT conversion. Check your OTF license – many commercial fonts require separate web licenses. Converting without proper license may violate terms.

When NOT to Use EOT

Scenarios where you should keep OTF or choose a different format

No IE6-8 users
Why not: EOT only works in IE6-11; if no IE8 traffic, EOT is pointless
Use instead: Use WOFF2 + WOFF; skip obsolete EOT entirely
Modern website
Why not: EOT for IE6-8 which is <0.01% of traffic in 2024
Use instead: Use WOFF2 (modern) + WOFF (IE9-11); skip EOT
Performance priority
Why not: EOT is larger and only works in dead browsers
Use instead: Skip EOT; use WOFF2/WOFF for better performance
Any use case in 2024
Why not: EOT is completely obsolete; all IE versions unsupported
Use instead: Never create new EOT files; use WOFF2 + WOFF

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