Intent to Prototype: Incremental font transfer

[Chromestatus]

Contact emails

wmed...@google.com, wmed...@chromium.org

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

This intent message was generated by Chrome Platform Status.