idea 26 · build only
Language suggestion banner
One line inviting a visitor into their own language.
Europeana
More than 3,700 institutions across Europe, sharing collections across national borders, means most visitors are reading a second language by default.
https://www.europeana.eu/en/about-usPretend the phone is set to
Room 3, the north wing
The page stays in the language it was requested in. The banner is an invitation, not a redirect, because a visitor who was sent a link in English usually meant to open it in English.
Dismiss it once and it does not come back on this device.
One line, in the visitor's own language, offering rather than forcing. The rule that matters is the second one: a link shared in English opens in English, because the sender chose it. Automatic redirection on Accept-Language breaks that every time.