WOFF2 Format Guide & Converter

Web Open Font Format 2 is Web Open Font Format 2.0 — the modern compressed web font standard, introduced 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.

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: 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

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.

Name tables, license/meta fields, and designer copyright strings live inside the font; web formats may include metadata blocks.

• Modern website typography
• Performance-focused @font-face
• Self-hosted brand fonts (licensed)
• Replacing heavier WOFF/TTF web delivery

• Desktop installation
• Unlicensed redistribution
• Ancient browser-only audiences without fallbacks
• Print RIPs expecting PostScript/OTF installs

• Best web compression
• Universal modern browser support
• Designed for @font-face
• Faster pages

• Not a desktop install format
• License compliance required
• Needs fallbacks only for very old clients
• Subset carefully for language coverage

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

• Format Convertly
• Google fonts pipeline
• Web build tools

• Desktop and mobile browsers
• Modern desktops
• Phones and tablets with compatible apps

Serve through CSS; preview on a webpage. Use font inspection tools for debugging.

Generate WOFF2 from licensed TTF/OTF with Format Convertly in your browser so font IP stays on your machine while pages get smaller.

• Pick a target format from popular conversions or the full list below.
• Your file is read into browser memory — not uploaded to a server.
• Download the result when conversion finishes.

Incoming conversions strengthen the WOFF2 cluster — e.g. JPG → WOFF2, PNG → WOFF2.

Decision pages that cite WOFF2 — the next hop after a vs comparison.

Tools extend the format graph beyond one-off conversion — compression, metadata, and utilities for real workflows.

Uploading sensitive WOFF2 files to a random converter creates a third-party copy you cannot control. Format Convertly keeps processing on-device so photos, contracts, and exports stay private.

• WOFF File Format 2.0 — W3C