WOFF 2.0 – Learn more about the next generation Web Font Format and convert TTF to WOFF2

ttf2woff2.md

Prolog

Google Chrome Developers says:

The new WOFF 2.0 Web Font compression format offers a 30% average gain over WOFF 1.0 (up to 50%+ in some cases). WOFF 2.0 is available since Chrome 36 and Opera 23.

Some examples of file size differences: WOFF vs. WOFF2

TTF to WOFF2 converting

• http://www.fontsquirrel.com/tools/webfont-generator
• http://everythingfonts.com/ttf-to-woff2

Embed WOFF2 in CSS (with WOFF fallback)

@font-face {
	font-family: MyFont;
	src:
		url('myfont.woff2') format('woff2'),
		url('myfont.woff') format('woff');
}

Base64 Data-URI

Of course you can use WOFF2 as a Base64 encoded string:

@font-face {
	font-family: MyFont;
	src:
		url('data:font/woff2;base64,...') format('woff2'),
		url('data:font/woff;base64,...') format('woff');
}

Good to know

• Please no serverside GZIP compression for WOFF files, because WOFF already contains compressed data.
• Think about the correct mime type for WOFF 2.0 files (Google uses font/woff2. W3C recommends font/woff2 too):

NGINX: WOFF2 mime type

types {
    font/woff2  woff2;
}

APACHE: WOFF2 mime type

AddType  font/woff2  .woff2

Browser Support

• Google Chrome 36
• Opera 23
• Firefox 39
• Opera 23
• Edge 14
• Safari 12

Helpful links

• Can I use WOFF2
• W3C: WOFF File Format 2.0
• A better web font compression format: WOFF 2.0
• Progress on smaller and more colorful fonts
• How to test WOFF 2.0
• WOFF 2.0 Compression on Google Fonts

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Sergej Müller

As someone who uses the Data-URI method, is there an option for loading the correct type from the server? As @zachleat said, it makes no sense to embed both in a single file.

You can also add FF 39 stable to the list, it is enabled by default now, which is great.

W3C now recommends font/woff and font/woff2 for WOFF and WOFF2. See
http://dev.w3.org/webfonts/WOFF2/spec/#IMT

Hi guys. Made a NodeJS wrapper for the Google lib, thought you could be interested in adding it to this document: https://github.com/nfroidure/ttf2woff2

Is there a way to convert WOFF 2.0 to WOFF 1.0?

@meanjim woff2-to-otf then otf-to-woff.

Safari 10 should have support for it too.

@jungshik is right. The W3C now recommend using font/woff2 as the MIME type: https://www.w3.org/TR/WOFF2/#IMT

@anthony-geoghegan how can one figure out whether apache is using the W3C/IANA mime type (font/woff2) or the previous mime type (application/font-woff2)?

@lazylester do a curl -I http://url/font.woff2 and check the Content Type header

@eladkarako Why you do not make an .7z for win32 as this one: https://github.com/aj-ash/woff2/releases ?

how to view woff2 in windows 11?