What is UFO?

UFO (Unified Font Object) is an open, XML-based font source format used by professional font editors for collaborative font development.

What is CFF?

Compact Font Format (CFF) is a PostScript-based font format used in PDF documents and professional printing for efficient font storage.

When Should You Use UFO vs CFF?

Use UFO When...

Reach for UFO when your priority is font design and editing, collaborative font development, glyphs/robofont — its uncompromising quality ensures every detail is preserved.

Use CFF When...

Reach for CFF when your priority is professional printing, pdf fonts — its uncompromising quality ensures every detail is preserved.

UFO vs CFF: Key Differences

•UFO and CFF diverge on compression: lossless compression for the source, lossless compression for the target.
•Both formats share lossless compression, so quality behavior is similar across the two — file size differences come from algorithm efficiency rather than compression philosophy.
•Alpha channel support: CFF lacks transparency support.
•UFO files are typically 100KB to 10MB+ depending on glyph count while CFF files range 15-100KB per font
•UFO is optimized for font design and editing, collaborative font development, glyphs/robofont while CFF is designed for professional printing, pdf fonts — choose based on your specific workflow needs

Advantages of UFO

✓At its core, UFO relies on lossless encoding — a design choice that makes it perfect for Font design and editing, collaborative font development, Glyphs/RoboFont.
✓You won't run into compatibility issues with UFO — it's a universal standard across platforms.
✓File size management with UFO: larger files guaranteed to match the original exactly.
✓Every major application in the Font design and editing, collaborative font development, Glyphs/RoboFont space supports UFO natively.

Advantages of CFF

✓CFF uses lossless compression tailored for Professional printing, PDF fonts.
✓CFF is supported natively on virtually every device, browser, and operating system.
✓CFF files are bit-for-bit perfect, preserving every pixel and sample for professional work.
✓CFF integrates seamlessly with all major creative tools and workflows.

Common Use Cases for UFO to CFF Conversion

Data visualization
Presentation design
Video subtitles
Game UI typography
Website typography
Brand identity

Industry Applications

SignageIcon DesignBook PublishingMobile App DevelopmentWeb DesignTypography

Best Practices for UFO to CFF Conversion

→Before converting UFO to CFF, review the font license — some licenses restrict format conversion
→Check hinting data after conversion: CFF may handle TrueType hinting differently than UFO
→Verify that all character sets (Latin, Cyrillic, CJK, etc.) survived the conversion intact
→Test the converted font in both a browser and a desktop application
→Keep the original font file in case the conversion alters spacing metrics

Troubleshooting UFO to CFF Conversion

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

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Convert to CFF →Convert from UFO →

Convert UFO to CFF Online - Free & Fast

Convert UFO files to CFF online for free. High-quality conversion with no registration required.

Font Converter

Upload or enter a URL to convert UFO to CFF instantly

Click to upload or drag & drop UFO file

or paste from clipboard

.ufo,.UFO (max 100MB)

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About UFO and CFF

UFO

UFO (UFO) - Unified Font Object, XML-based source format for font design and editing. Best for font design and editing, collaborative font development, glyphs/robofont.

CFF

CFF (CFF fonts) - Compact Font Format, PostScript-based font outlines. Ideal for professional printing, pdf fonts.

Format Comparison

CompressionLossless → Lossless

TransparencySupported

Use CaseConvert from font design and editing, collaborative font development, glyphs/robofont to professional printing, pdf fonts

File Size~15-100KB per font after conversion

FAQs

Is converting UFO to CFF free?

Yes, GoConvertFile offers free conversion of UFO to CFF for files up to 100MB. No registration required.

How long does it take to convert UFO to CFF?

Most UFO to CFF conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is CFF best used for?

CFF is ideal for professional printing, pdf fonts. Compact Font Format, PostScript-based font outlines

What file size should I expect after converting UFO to CFF?

File size after UFO to CFF conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.

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