A combination of such declarations can be used to construct a "font family," which the browser will use to evaluate which font resources need to be downloaded and applied to the current page. The CSS at-rule allows you to define the location of a particular font resource, its style characteristics, and the Unicode codepoints for which it should be used. For example, Google Fonts maintains 30+ optimized variants for each font and automatically detects and delivers the optimal variant for each platform and browser. For more information, see the WOFF 2.0 evaluation report.įinally, it's worth noting that some font formats contain additional metadata, such as font hinting and kerning information that may not be necessary on some platforms, which allows for further file-size optimization. WOFF 2.0's internal compression uses Brotli, and offers up to 30% better compression than WOFF. Web fonts and compression #īoth WOFF and WOFF 2.0 have built-in compression.
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In this post you will find out how to reduce the delivered filesize of your web fonts.
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Note, however, that the total size of Noto, with all languages included, results in a 1.1GB+ ZIP download. For example, Google's Noto font family aims to support all the world's languages. If you need to localize your page content to multiple languages, you should use a font that can deliver a consistent look and experience to your users. When picking a font, it's important to consider which character sets are supported. For example, Open Sans, which is one of the most popular WebFonts, contains 897 glyphs, which include Latin, Greek, and Cyrillic characters. As a result, two simple variables determine the size of a particular font file: the complexity of the vector paths of each glyph and the number of glyphs in a particular font. Anatomy of a web font #Ī web font is a collection of glyphs, and each glyph is a vector shape that describes a letter or symbol. On the contrary, optimized fonts, combined with a judicious strategy for how they are loaded and applied on the page, can help reduce the total page size and improve page rendering times. Each font is an additional resource, and some fonts may block rendering of the text, but just because the page is using WebFonts doesn't mean that it has to render slower. Web font optimization is a critical piece of the overall performance strategy.
WebFonts are critical to good design, UX, and performance. Web fonts enable all of the above and more: the text is selectable, searchable, zoomable, and high-DPI friendly, providing consistent and sharp text rendering regardless of the screen size and resolution.
Typography is fundamental to good design, branding, readability, and accessibility.
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