1609304 - Reduce Gecko's User-Agent strings

Status: NEW

(Core :: Networking, enhancement, P3)

Description

[Masatoshi Kimura [:emk]]

Chrome announced the timeframe. Safari already froze the user-agent header (except OS version and browser major version).

Comment 1

[Honza Bambas (:mayhemer)]

This seems to depend on User Agent Client Hints.

Comment 2

[Masatoshi Kimura [:emk]]

I'm surprised that the Client Hints proposal has been around for a very long time.

Comment 3

[Matthew Finkel [:sysrqb]]

(In reply to Masatoshi Kimura [:emk] from comment #0)

Chrome announced the timeframe. Safari already froze the user-agent header (except OS version and browser major version).

I'll just note that Firefox has shipped with support for this since FF58 (Bug1333651), although behind a pref. Tor Browser has frozen its UA string (except moving between ESR versions and OS) for most of the last decade (originally via the |general.*.override| prefs).

Comment 4

[Tanvi Vyas[:tanvi]]

See Mozilla's position here - https://github.com/mozilla/standards-positions/issues/202#issuecomment-558294095.

Comment 5

[Chris Peterson [:cpeterson]]

When Firefox's User-Agent string is changed, we should also update the UA Compatibility spec:

https://compat.spec.whatwg.org/#ua-string-section