What is WOFF?

WOFF (Web Open Font Format) is a font format specifically designed for use on the web, compressing TrueType or OpenType fonts for faster loading.

What is UFO?

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

When Should You Use WOFF vs UFO?

Use WOFF When...

Reach for WOFF when your priority is web fonts, responsive web design — its efficient compression makes sharing fast and storage minimal.

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.

WOFF vs UFO: Key Differences

•The core technical difference: WOFF relies on lossy compression whereas UFO uses lossless compression.
•Converting from WOFF to UFO changes compression type: lossless source becomes larger but with full quality preservation.
•Transparency: N/A
•WOFF files are typically 30-50% smaller than TTF/OTF while UFO files range 100KB to 10MB+ depending on glyph count
•WOFF is optimized for web fonts, responsive web design while UFO is designed for font design and editing, collaborative font development, glyphs/robofont — choose based on your specific workflow needs

Advantages of WOFF

✓At its core, WOFF relies on lossy encoding — a design choice that makes it perfect for Web fonts, responsive web design.
✓You won't run into compatibility issues with WOFF — it's a universal standard across platforms.
✓File size management with WOFF: aggressive compression with minimal visible quality loss.
✓Every major application in the Web fonts, responsive web design space supports WOFF natively.

Advantages of UFO

✓The lossless nature of UFO means file sizes stay reasonable while handling Font design and editing, collaborative font development, Glyphs/RoboFont efficiently.
✓From mobile devices to enterprise servers, UFO is recognized and supported everywhere.
✓The trade-off for UFO's perfection is larger files — but for archival work, it is worth every megabyte.
✓UFO is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for WOFF to UFO Conversion

Marketing materials
Packaging design
Signage systems
Icon sets
Logo design
Data visualization

Industry Applications

User Interface DesignDigital MarketingPackaging DesignAdvertisingGame UISignage

Best Practices for WOFF to UFO Conversion

→Converting WOFF to UFO: check that glyph coverage is preserved — some formats have character limitations
→Use UFO for cross-platform compatibility
→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 WOFF to UFO Conversion

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

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Convert WOFF to UFO Online - Free & Fast

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

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Upload or enter a URL to convert WOFF to UFO instantly

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.woff,.WOFF (max 100MB)

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About WOFF and UFO

WOFF

WOFF (WOFF fonts) - Web Open Font Format, compressed webfont format. Best for web fonts, responsive web design.

UFO

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

Format Comparison

CompressionLossy → Lossless

TransparencySupported

Use CaseConvert from web fonts, responsive web design to font design and editing, collaborative font development, glyphs/robofont

File Size~100KB to 10MB+ depending on glyph count after conversion

FAQs

Is converting WOFF to UFO free?

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

How long does it take to convert WOFF to UFO?

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

What is UFO best used for?

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

Does converting WOFF to UFO lose quality?

No, converting WOFF to UFO does not cause additional quality loss â€” UFO uses lossless compression. However, any artifacts already present in the original WOFF file will persist in the UFO output.

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

UFO files are typically 2-5x larger than equivalent WOFF files because UFO preserves all pixel data. This is expected and necessary for lossless quality.

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