4 items
Select or double-click any word to see its meaning, examples, synonyms, translation, and adaptive vocabulary practice. Catchword helps you learn vocabulary while browsing. Double-click any word to view definitions, examples, synonyms, and on-device translations without leaving the page. Bring your own Google Gemini API key to unlock richer definitions, broader translation coverage, explanations based on the surrounding sentence, personalized quizzes, answer grading, and spaced-review practice. AI features are optional, and requests are sent directly to Google using your API key.
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.