How to add custom Accept-Languages to Chrome for pseudolocalization testing?
In Firefox Use about:config (There is a typo in qps-ploc in the screenshots, but you surely get the idea) In Chrome (Edit: refer to the comments for ways to avoid Chrome override the setting in new versions.) Edit the file C:\Users\USERNAME\AppData\Local\Google\Chrome\User Data\Default\Preferences, and add: { … “intl”: { “accept_languages”: “qps-ploc,en-us,en” }, … } For example: