WatchMark

Unknown author · Workflow & Planning

Open in Chrome Web Store

Users

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Avg rating

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Ratings

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Updated

Aug 23, 2026

Media

5 items

Description

Watch any webpage element and get notified when its text changes. ## What it can do - Point and click an element on a webpage to monitor it. - Highlight text, then monitor the selected area. - Detect live updates with `MutationObserver`. - Reload the page every 30 seconds through 5 minutes in 30-second steps. - Send a Chrome notification, an on-page alert, and an email when the value changes. - Restore the monitored element after a page reload. Example uses include class seat availability, appointment openings, product stock, event tickets, and status dashboards.

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.
9
Description length
Characters in the listing description.
572
Media assets
Screenshots and videos on the listing.
5
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.
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Keyword occurrences in description
Count of case-insensitive occurrences in the description.
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Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
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These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.