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Highlight, note, and ask about any passage on any page. Everything you've marked, collected in one place. Marginalia for the web. Highlight a passage on any page and ask about it — the answer appears in the margin, beside the line that prompted it. Highlight and start typing: a card opens next to the passage, the way a note in a book's margin sits beside the sentence it's about. Ask what a term means, what a claim rests on, why the author went that way. The conversation stays anchored to that passage, so a page you've thought about hard reads like a page you've thought about hard. Nothing appears until you select something. There is no sidebar, no floating button, no badge — the page looks exactly like the page until you mark it. • Highlights and notes on any page, kept where you made them • A conversation per passage, not a chat window off to one side • Cards set in the page's own type, so they belong to the page they sit on • Works on PDFs, including arXiv • Your own Anthropic API key (console.anthropic.com) — no subscription, no account, and your requests go straight to Anthropic with Glossing never in the middle • Optional: connect a Glossing notebook for syncing, search across everything you've marked, and a reader for longer documents — the extension works entirely on its own without one Privacy: highlights live in your browser unless you connect a notebook. Page text is sent to Anthropic only when you ask a question, with your own key. No analytics, no telemetry, nothing sold. Full policy: https://glossing.app/privacy
Aug 6, 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.