Post #2824747
2026-04-14 11:46 UTC
@TechieNotNetie@social.vivaldi.net @Vivaldi@social.vivaldi.net
Why isn't there a "clean" UA string for Vivaldi?
Instead of
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36"
(even with the Sec-CH-UA browser identity HTTP header set to Vivaldi) do
"Vivaldi/7.9 (Chrome/146.0.0.0)"
maybe add the OS? At least as an option. I seriously doubt it but if there are any websites outside there that still require a "Mozilla/5.0" they should be updated and/or avoided. I get that the Chrome-part might be relevant (it shouldn't), everything else is just stupid and wrong.
Replies (2)
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@gothpanda@pandapla.net 2026-04-14 12:48
@missingno@social.vivaldi.net @TechieNotNetie@social.vivaldi.net @Vivaldi@social.vivaldi.net every user agent string starts with "Mozilla/5.0". It started as a work around for sites checking it incorrectly, and unfortunately became the permanent solution. It's now expected.
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@TechieNotNetie@social.vivaldi.net 2026-04-14 14:06
@missingno@social.vivaldi.net @Vivaldi@social.vivaldi.net The history of this sequence of lies about which browser is being used is covered in an article linked from the "Client Lies" article linked from my forum post. As a shortcut it is https://humanwhocodes.com/blog/2010/01/12/history-of-the-user-agent-string/ TL;DR: MSIE started it