Format guide
What is WOFF2?
Web Open Font Format 2 is Web Open Font Format 2.0 — the modern compressed web font standard, created by W3C (2018). WOFF2 typically yields the smallest web fonts and is supported by all modern browsers. Convert licensed TTF/OTF sources to WOFF2 for production CSS.
WOFF2 format specifications
- Full name
- Web Open Font Format 2
- Kind
- font
- File extension
- .woff2
- MIME type
- font/woff2
- Developer / standard
- W3C · 2018
- Compression
- brotli
- Quality model
- Lossless / not lossy
- Container
- No / single bitstream typical
- Common codecs
- —
- Technical sources
- —
- Transparency
- Not supported
- Animation
- No (still / non-animated typical use)
- Typical size
- Often 30%+ smaller than WOFF
- Browser support
- Excellent in modern browsers
- Compatibility
- Supported by all modern browsers for @font-face; provide older fallbacks only if you still measure traffic on ancient clients
WOFF2 compression & quality
WOFF2 compression: brotli. Lossless (or non-destructive packaging) keeps reconstructable data — size savings come from packing efficiency, not throwing detail away. Typical size profile: Often 30%+ smaller than WOFF. Quality note: Lossless outlines with strong compression
Quality: Lossless outlines with strong compression
Typical size: Often 30%+ smaller than WOFF
Transparency & animation
WOFF2 does not support an alpha channel. Convert to PNG, WebP, AVIF, or SVG when you need transparent backgrounds.
WOFF2 is a still-media or non-animated format in typical use. Use GIF, APNG, video, or animated WebP when you need motion.
WOFF2 metadata
Name tables, license/meta fields, and designer copyright strings live inside the font; web formats may include metadata blocks.
Best use cases for WOFF2
- Modern website typography
- Performance-focused @font-face
- Self-hosted brand fonts (licensed)
- Replacing heavier WOFF/TTF web delivery
When to avoid WOFF2
- Desktop installation
- Unlicensed redistribution
- Ancient browser-only audiences without fallbacks
- Print RIPs expecting PostScript/OTF installs
Advantages
- Best web compression
- Universal modern browser support
- Designed for @font-face
- Faster pages
Disadvantages
- Not a desktop install format
- License compliance required
- Needs fallbacks only for very old clients
- Subset carefully for language coverage
Compatibility
Supported by all modern browsers for @font-face; provide older fallbacks only if you still measure traffic on ancient clients
Browsers: Excellent in modern browsers
Software support
- Format Convertly
- Google fonts pipeline
- Web build tools
Device support
- Desktop and mobile browsers
- Modern desktops
- Phones and tablets with compatible apps
How to open WOFF2
Serve through CSS; preview on a webpage. Use font inspection tools for debugging.
How to convert WOFF2
Generate WOFF2 from licensed TTF/OTF with Format Convertly in your browser so font IP stays on your machine while pages get smaller.
Popular WOFF2 conversions
Convert to WOFF2
Incoming conversions strengthen the WOFF2 cluster — e.g. JPG → WOFF2, PNG → WOFF2.
Best format guides featuring WOFF2
Decision pages that cite WOFF2 — the next hop after a vs comparison.
Related formats
WOFF2 tools
Tools extend the format graph beyond one-off conversion — compression, metadata, and utilities for real workflows.
Technical sources
- WOFF File Format 2.0 — W3C
WOFF2 FAQ
What is a WOFF2 file?
WOFF2 is Web Open Font Format 2.0 — the modern compressed web font standard. WOFF2 typically yields the smallest web fonts and is supported by all modern browsers. Convert licensed TTF/OTF sources to WOFF2 for production CSS.
Is WOFF2 lossy or lossless?
WOFF2 is typically lossless or non-destructive in common use (brotli).
Does WOFF2 support transparency?
WOFF2 does not support an alpha channel. Convert to PNG, WebP, AVIF, or SVG when you need transparent backgrounds.
How do I open a WOFF2 file?
Serve through CSS; preview on a webpage. Use font inspection tools for debugging.
How do I convert WOFF2 privately?
Generate WOFF2 from licensed TTF/OTF with Format Convertly in your browser so font IP stays on your machine while pages get smaller. Format Convertly keeps processing in your browser so files are not uploaded to a conversion server.
Are my WOFF2 files uploaded on Format Convertly?
No. WOFF2 conversion runs in your browser. Files are not sent to Format Convertly servers for processing.