WatchMark

by hongyifeng718@gmail.com · Workflow & Planning

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Watch any webpage element and get notified when its text changes.

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#338K

#263K among extensions

Version

1.0.0

updated 23 Aug 2026

Users

monthly, 2 months

Latest, 16 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About WatchMark

## 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.