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Highlight English words you don't know yet as you read on the web, based on your BitVocab mastered-words list. BitVocab Highlighter marks unfamiliar English words on any web page, so you can read real content and focus only on the words worth learning. How it works: • Sign in with your BitVocab account (password or Google) • It loads your personal "mastered words" list • Click "Highlight" on any English page — words you don't know are highlighted, words you've already mastered are skipped • Turn on "Phrases" to also underline common English phrases and fixed expressions alongside word highlighting • Hover a highlighted word to mark it as mastered; it syncs back to your BitVocab account Scroll freely — newly shown text is highlighted as you go Export to Word: Turn any highlighted page into a study sheet. Click "Export Word" and choose exactly what to include — the word, phonetic spelling, star rating, and meaning — laid out as a grid with adjustable columns. Or switch to "with examples" mode to get real example sentences for each word, with the target word picked out in the sentence. Extra filters: highlight only IELTS / TOEFL / AWL vocabulary, filter by word frequency level, and exclude proper nouns (people, countries, places). Your mastered-words list is shared across BitVocab on the web, mobile, and this extension. Tip: build your list quickly at bitvocab.com first, then maintain it as you read. Your privacy matters: the text of the pages you read is processed locally in your browser and never sent to our servers. Learn more at bitvocab.com
Jul 20, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.