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Use regular expressions to extract the text you need from web pages. There are three text search modes: Node mode: search HTML node text, the advantage is that can highlight the search result position. Text mode: search the webpage text you see,commonly used to search results contain hyperlink text. Source mode: search HTML source code of web pages, commonly used to search for image addresses, download links, etc.
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.