Web Open Font Format 2 (WOFF2)
WOFF2 is the standard delivery format for `@font-face` on the web — smaller than raw TTF/OTF. Font table structure comes from OpenType; WOFF2 is the transport envelope.
What It Defines
Compressed web font packaging format wrapping TrueType/OpenType/CFF font tables with Brotli compression. Header + table directory + compressed tables. MIME type: `font/woff2`.
Canonical (Normative)
Convenient (Practical)
Publishes web platform specs including CSS, accessibility, security policies, Service Workers, Web App Manifest, and many browser APIs. Also maintains some versioned HTML/DOM specs.
Related Specs
Every upload, download, attachment, and asset pipeline crosses these layers. Misunderstanding header vs envelope causes MIME spoofing bugs, parser differentials, and broken file validation. Start here before diving into individual format specs.
CSS drives all visual layout. Key modules: Grid, Flexbox, Custom Properties, Cascade layers, Container Queries. The snapshot identifies what's stable vs experimental.