Firefox desktop · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Choose written content to translate
Firefox’s built-in translation feature concerns supported webpage text. It can help read a help article or programme description. It should not be assumed to translate spoken video, produce an official subtitle track or change a service account’s country. Identify the written text and source language first.
Check language support
Mozilla says translation uses models downloaded to the device. Inspect Firefox’s Translations settings and current supported source/destination combination. Settings locations can vary with the release, including language and AI-control panels. If a language is absent, do not assume a general browser reset will add unsupported translation directions.
Install the relevant language resources
Use Firefox’s documented language-install controls for the languages you need. Mozilla says first use can download required resources, with complete languages available for preinstallation. Complete that preparation while connected before expecting supported local translation without a connection. The download concerns translation models, not the website’s media catalogue.
Translate and inspect the result
Use the offered translation panel, page context action or browser menu on the intended article. Compare a small section with the original and preserve product names, error codes and settings labels when following technical instructions. Machine translation can change wording, so do not treat it as an official revision of the publisher’s instructions.
Keep the privacy scope specific
Mozilla describes this translation processing as on-device. That does not make the original website offline or describe every other browser feature’s data handling. Record the Firefox version and language pair if the translation action is unavailable. Avoid installing an outdated translation add-on solely because an old article names it.
Questions, answered
Does a language pack download programmes for offline viewing?
No. It provides local translation resources.
Does local translation mean the website never uses the network?
No. The translation feature and the website’s own connection are separate.