Lëtz Reader settings

Luxembourgish, German and French → English and Tiếng Việt

Lëtz Reader Premium

Free

Select a word or sentence: Vietnamese and English at once
Luxembourgish dictionary (LOD) with pronunciation
Save words to your list

Premium

Vietnamese and English under every paragraph
Tóm tắt: whole articles summarised in Vietnamese
Word explanations, accurate translations and words to learn (with your own Claude key, see below)
Quiz mode and export to Excel / Anki

License key

After buying you receive a license key by email. It unlocks Premium in this browser.

Claude

Claude writes the word explanations, the accurate translations and the Vietnamese summaries. It uses your own Anthropic API key, which you can create at console.anthropic.com. Without a key, the extension still translates instantly with Google and shows the Luxembourgish dictionary.

API key

Stored only in this browser profile and sent only to Anthropic. It is never synced. Model

Advanced

API address Only change this if your company routes Claude through its own gateway.

Translations

Translations under each paragraph Google Translate: instant and free Claude: more accurate, especially for Luxembourgish; uses your key (a typical article costs about 5–10 cents with Opus, well under a cent with Haiku)

Your level in the language you're reading Beginner (A1–A2) Intermediate (B1–B2) Advanced (C1 and above) Claude pitches explanations, words to learn and summaries to this level.

Language for grammar notes in word explanations English Tiếng Việt

Show the Tóm tắt (Vietnamese summary) button on news articles

Where it works

It switches itself on for about 110 news sites in Luxembourg, France and Germany: national papers, public broadcasters, business news and the main regional papers. The full list is in the README. On any other site, use Use on this page or Always on for this site in the toolbar pop-up.

Use on every website, for local papers that aren't on the list

With this on, text you select on any website, including webmail and work tools, is sent to Google Translate. Leave it off on a work computer and use “Always on for this site” instead.