3 items
Records the manga chapters you open on sites you have explicitly enabled, and syncs them to your own Chap Tracker instance. Chap Tracker records which manga chapters you have opened on reading sites you explicitly enable, and syncs that reading progress to a self-hosted Chap Tracker server that you run and pair the extension with. It does one thing: keep your chapter progress in one place across the sites you read on.
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.