Cat Gatekeeper
Chrome extension by developmentbycores · Productivity · Tools
A Chrome extension in Productivity · Tools with 1 000 users, a small but real audience. Audience over the last 30 days: unchanged.
Every site you visit. This extension can read and change the content of any page you open.
What the developer says, and 4 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 1 000
- Users, last 30 days
- Unchanged (the store rounds this count to 1 000, so it moves only between steps)
- Rating, last 30 days
- Steady over 30 days
- Version
- 1.0.0
- Updated in the store
- 2026-06-01
- Published
- 2026-06-01
- Manifest
- V3
- Browser access
- 4 permissions, 1 site pattern
How it has moved
- 2026-11-031k
- 2026-11-03reviews7
- 2026-09-011k
- 2026-11-031k
- 2026-09-01reviews7
- 2026-11-03reviews7
A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.
What it can reach
Every site you visit. This extension can read and change the content of any page you open.
-
See the address and title of every tab you have open
tabs -
Run its own code on the pages it can access
scripting -
Schedule work to run later
alarms
Show the remaining 1
-
Store data in your browser
storage
What changed recently
Nothing has moved on this listing since we started watching it.
The publisher
developmentbycores publishes 10 listings we track, 47k users between them.
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Authenticator App 20k users
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Disable YouTube Shorts 10k users
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UnHook YouTube 10k users
Show 5 more from this publisher
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Block Porn 2k users
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Currency Exchange Rate 2k users
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Block Sites 721 users
-
UTC Time Converter 615 users
-
Clipboard History 343 users
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Website Blocker - Block Distracting Sites, Private & Simple 15 users
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Focuz 4 users
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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Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.
Add a badge to your README or site
The badge shows the audience and rating from our last pass over the store and links back to this page.
[](https://extops.dev/extensions/jibhbdgmnfeajhijpmgelnocbajleege)<a href="https://extops.dev/extensions/jibhbdgmnfeajhijpmgelnocbajleege"><img src="https://extops.dev/extensions/jibhbdgmnfeajhijpmgelnocbajleege/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store has not changed these figures since 2026-09-01, when we first saw this listing. We publish no contact details for extension developers.