Intent to Extend Experiment: User-Agent Reduction Origin Trial
Mike Taylor
Hi there,
We would like to extend the User-Agent Reduction OT again, from M104 to M106 (inclusive). The original extension expired on July 26th. We’ve heard from several partners that they would like to have more time to test the fully reduced UA string ahead of Phase 5 and Phase 6 rollouts.
Original I2E
https://groups.google.com/a/chromium.org/g/blink-dev/c/R0xKm1B7qoQ/
First I2EE https://groups.google.com/a/chromium.org/g/blink-dev/c/6x6WH2Odzfo/m/FkDjee5cHQAJ
Experiment Timeline
M103-M106 inclusive
Reason this experiment is being extended
Like the previous extension, we believe the risks for burn-in don't apply, because this OT just enables what we are planning to ship as default behavior in the future (and the OT stopped working last week).
We still have not received negative feedback or reports of breaking from OT participants, and are encouraged by that fact.
Here’s the relevant info required for OT extensions beyond 6 milestones:
Draft spec:
We’ve made solid progress against the open UA string issues, and have documented the recent landing of “Phase 4” in Chromium. We plan to continue improving things here.
TAG review:
https://github.com/w3ctag/design-reviews/issues/640 - closed as “Satisfied with concerns”
bit.ly/blink-signals requests
Gecko: Shipped/Shipping. Firefox has frozen (or capped) much of their UA string already.
WebKit: Shipped/Shipping. Safari has already frozen everything in their UA string except for version number info.
Web developers: Mixed signals. Reactions have ranged from positive to indifferent to negative, from various channels.
WPT tests
None yet, since UAs have flexibility to diverge here. With more alignment, this may make sense in the future.
Thanks, Mike
Chris Harrelson
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