Quick Lookup

A browser extension that opens a card under the text you select. For a technical term it shows the sense that fits the page you are reading, ranked locally with no model and no account.

Quick Lookup is a browser extension for Chrome, Brave, Edge and Firefox. When you select text on a page, a card opens under it with the most useful answer for that kind of text. An English word gets definitions, pronunciation and related words. A name gets an entity card. A technical term gets the sense that fits the page you are reading.

That last case is why I wrote it. On a page about Iceberg tables, manifest is a metadata file, not the everyday adjective. A dictionary pop-up that does not know which page it is on shows the wrong meaning first. Quick Lookup profiles the page once from its title, headings and description, and ranks the senses against that profile, locally and with no model. Before any other source, it looks for a sentence on the page itself that defines the selection.

Three cards: a word with its senses, frequency and example sentences; a technical term with the page's own definition and facts from the package registry; a name with a Wikipedia summary

The facts come from data sources such as Wiktionary, Wikipedia, Wikidata, Stack Exchange, package registries and MDN, and every meaning links to the page it came from. Dictionary packs can be installed for offline lookups. Two cards can stay open side by side to compare words, and a card can be copied as Markdown or as an Anki note.

It needs no account. The only feature that sends a whole page anywhere is a conversation about the page with Claude, and it stays off until you set it up. The extension is open source under the MIT license. For now it is not in a store and is loaded unpacked.