Marginalia

Unknown author · Tools

Open in Chrome Web Store

Users

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Avg rating

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Ratings

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Updated

Jun 19, 2026

Media

1 item

Description

AI reading partner that observes how you read, then opens a conversation with an observation, an insight, and one question. Marginalia is an AI reading companion. It observes how the user reads the current page (dwell time, scroll speed, engagement) and, on request, opens a sidebar conversation that returns an observation, an insight, and one question about what they were reading — using the user's own Anthropic API key.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
10
Description length
Characters in the listing description.
425
Media assets
Screenshots and videos on the listing.
1
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
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.