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Show a QR-Code for the current URL (without relying on some third-party API). Shows a QR-Code for the current URL, or any other text. It uses Kazuhiko Arases JavaScript library (http://www.d-project.com/) to draw the QR codes instead of relying on some third-party web API (like all of the other extensions I looked at.). It's free and open source: https://github.com/fxkr/chrome-qrcode-extension
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.