UnderTheHood - Check Which Technology Is Behind Any Website
Chrome extension by Rahul Khorwal · Productivity · Tools
A Chrome extension in Productivity · Tools with 2 000 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 5 screenshots
Loading from the Chrome Web Store. Open the listing if it does not appear.
- Users
- 2 000
- 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
- 3.0.0
- Updated in the store
- 2026-06-24
- Published
- 2024-09-02
- Manifest
- V3
- Browser access
- 4 permissions, 1 site pattern
How it has moved
- 2026-10-312k
- 2026-10-31reviews2
- 2026-09-011k
- 2026-09-102k
- 2026-10-312k
- 2026-09-01reviews2
- 2026-09-10reviews2
- 2026-10-31reviews2
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.
-
Read and change cookies on the sites it can access
cookies -
Run its own code on the pages it can access
scripting -
Act on the current tab, but only after you click it
activeTab
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
Rahul Khorwal publishes 11 listings we track, 7k users between them.
-
X (Twitter) Auto Cleaner 4k users
-
DesignMD: Copy Website Design, Mix with AI 269 users
-
Proxy Switcher & Manager - unblockAnyThing (SOCKS5/HTTP) 89 users
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Domain Rating Checker 68 users
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Spool - Copy Comment Threads as Markdown 29 users
-
CleanMyGPT - Delete ChatGPT Chats & Images In Bulk 26 users
-
WebRTC Leak Blocker 23 users
-
CleanMyGemini In Bulk 7 users
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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/knochkahoclkloihogcigilmkdbblppf)<a href="https://extops.dev/extensions/knochkahoclkloihogcigilmkdbblppf"><img src="https://extops.dev/extensions/knochkahoclkloihogcigilmkdbblppf/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 last changed these figures on 2026-09-10. We publish no contact details for extension developers.