Contact emails
[email protected], [email protected]

Explainer
https://garretrieger.github.io/ift-demo


Specification
https://www.w3.org/TR/IFT


Summary
Incremental font transfer enables the browser to download only the specific 
portions of a web font needed to render the text on a page. This reduces 
bandwidth usage and improves page load times for sites using large fonts. This 
allows developers to optimize web performance without needing to generate and 
manage font subsets.


Blink component
Blink>WebFonts


Web Feature ID
Missing feature


Motivation
Web fonts for languages with large character sets—such as Chinese, Japanese, 
and Korean (CJK)—often exceed several megabytes in size. Downloading these 
massive files significantly delays text rendering, consumes excessive 
bandwidth, and degrades the user experience. The current alternative to 
incremental font transfer is unicode-range based subsetting. From our demo, 
incremental font transfer sees typical savings of 50% or more compared to the 
subsetting approach. fonts.google.com serves a significant amount of web fonts 
and will be ready to support the best font delivery option


Initial public proposal
https://www.w3.org/TR/IFT/


Goals for experimentation
None


Requires code in //chrome?
False


Tracking bug
https://g-issues.chromium.org/issues/498722796


Estimated milestones

No milestones specified



Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5135917565214720?gate=4886470612615168


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