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SEO Page Monitor — Change Alerts

Chrome extension by 2-UA (Two User-Agents) · Productivity · Developer

A Chrome extension in Productivity · Developer with 3 users, barely installed.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
3 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 16 days
+1
Version
0.4.1
Updated in the store
2026-08-19
Published
2026-08-19
Manifest
V3
Browser access
6 permissions

How it has moved

Users
+1 since 31.08
2-3 · 3 readings
  1. 2026-08-312
  2. 2026-09-083
  3. 2026-09-153
Users
+1 since 31.08
2-3 · 3 readings
  1. 2026-08-312
  2. 2026-09-083
  3. 2026-09-153

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Show you notifications notifications
Show the remaining 3
  • Run work in a hidden page offscreen
  • Open a panel beside the page sidePanel
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

2-UA (Two User-Agents) publishes 4 listings we track, 22 users between them. Listed website: 2-ua.com.

  1. Source vs Rendered vs Googlebot SEO 2-UA (Two User-Agents) · Productivity · Developer · published 2026-08-17 9 users
  2. AI SEO & GEO Readiness Checker by 2UA 2-UA (Two User-Agents) · Productivity · Developer · published 2026-08-14 6 users (last published figure)
  3. SEO Release Guard — Staging vs Live 2-UA (Two User-Agents) · Productivity · Developer · published 2026-08-16 4 users (last published figure)

Like this one

Listings the catalog judges closest in what they say they do.

  1. Changedetection.io Website Monitor Describes nearly the same job, smaller audience 9k users ★ 3.9
  2. WebWatch – Website Change Detector Describes nearly the same job, smaller audience 13 users
  3. PageWatch Describes nearly the same job, smaller audience 2 users (last published figure)
  4. Distill Web Monitor Describes nearly the same job, with a large installed audience 400k users ★ 4.5
  5. Visualping: Website change detection, monitoring and alerts Describes nearly the same job, with a large installed audience 100k users ★ 4.4

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.