What is CFF2?

CFF2 (Compact Font Format v2) is optimized for OpenType variable fonts with efficient data structures and support for font variations.

What is EOT?

Embedded OpenType (EOT) is a compact font format developed by Microsoft for embedding fonts in web pages using IE.

When Should You Use CFF2 vs EOT?

CFF2 vs EOT: Key Differences

• •CFF2 uses lossless compression while EOT uses lossy compression — this is the fundamental technical difference between the two formats.
• •Moving from CFF2 (lossy) to EOT (lossy) means the output file will be significantly smaller — but at the cost of some visual fidelity.
• •How transparency is handled: EOT does not support alpha channels — transparent areas in the source will become opaque.
• •Storage footprint: 15-100KB per font for CFF2 vs Similar to WOFF, 30-50% smaller than TTF for EOT.
• •Use case fit: CFF2 targets variable fonts, opentype font production, advanced typesetting and EOT targets legacy ie web fonts, older browser support — your choice depends on which workflow stage you are serving.

Advantages of CFF2

• ✓CFF2 compresses data using lossless methods, keeping file sizes manageable for Variable fonts, OpenType font production, advanced typesetting.
• ✓Industry-wide support means CFF2 files open anywhere — from legacy systems to the latest devices.
• ✓Lossless quality makes CFF2 the gold standard for archival and master copies.
• ✓From professional software to open-source alternatives, CFF2 works out of the box.

Advantages of EOT

• ✓EOT applies lossy compression specifically calibrated for Legacy IE web fonts, older browser support.
• ✓EOT enjoys broad native support across operating systems, browsers, and creative tools alike.
• ✓EOT delivers impressive compression ratios, shrinking files dramatically while keeping visual quality high.
• ✓You will find EOT support built into virtually every tool that handles Legacy IE web fonts, older browser support — no plugins or converters needed.

Common Use Cases for CFF2 to EOT Conversion

• Desktop publishing
• E-book formatting
• User interfaces
• Marketing materials
• Packaging design
• Signage systems

Industry Applications

Best Practices for CFF2 to EOT Conversion

• →Converting CFF2 to EOT: check that glyph coverage is preserved — some formats have character limitations
• →Use EOT for websites where file size matters
• →Test fonts across different browsers and operating systems after conversion
• →Always keep a backup of your original files before converting
• →Choose the appropriate quality settings for your specific use case

Troubleshooting CFF2 to EOT Conversion

• !EOT font doesn't render correctly → check if EOT supports all glyphs present in CFF2
• !Licensing restrictions after CFF2 to EOT conversion → verify the font license allows format conversion
• !Hinting data lost converting CFF2 to EOT → some font formats like EOT may not preserve TrueType hinting
• !Special characters missing from converted EOT → font subsetting may have removed unused glyphs

Related Font Converters

All Font Formats

More Font tools