Ext Ops Panel
Open dashboard

CSS Selector Tester

Chrome extension by simondev · Productivity · Developer

  • Featured

A Chrome extension in Productivity · Developer with 304 users, barely installed. Audience over the last 30 days: +1.

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
304
Rating
5.0 (1 ratings)
Users, last 30 days
+1
Rating, last 30 days
Steady over 30 days
Version
1.0.0
Updated in the store
2023-12-06
Published
2023-12-06
Manifest
V3
Browser access
3 permissions, 1 site pattern

How it has moved

Users
+1 since 02.10
285-304 · 17 readings
  1. 2026-10-04287
  2. 2026-10-08300
  3. 2026-10-09302
  4. 2026-10-10298
  5. 2026-10-13302
  6. 2026-10-16285
  7. 2026-10-17291
  8. 2026-10-18290
  9. 2026-10-19291
  10. 2026-10-20297
  11. 2026-10-21296
  12. 2026-10-22300
  13. 2026-10-24298
  14. 2026-10-25299
  15. 2026-10-29301
  16. 2026-10-30298
  17. 2026-11-01304
Rating
unchanged since 02.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-04reviews1rating5.00
  2. 2026-10-08reviews1rating5.00
  3. 2026-10-09reviews1rating5.00
  4. 2026-10-10reviews1rating5.00
  5. 2026-10-13reviews1rating5.00
  6. 2026-10-16reviews1rating5.00
  7. 2026-10-17reviews1rating5.00
  8. 2026-10-18reviews1rating5.00
  9. 2026-10-19reviews1rating5.00
  10. 2026-10-20reviews1rating5.00
  11. 2026-10-21reviews1rating5.00
  12. 2026-10-22reviews1rating5.00
  13. 2026-10-24reviews1rating5.00
  14. 2026-10-25reviews1rating5.00
  15. 2026-10-29reviews1rating5.00
  16. 2026-10-30reviews1rating5.00
  17. 2026-11-01reviews1rating5.00
Users
+3 since 01.09
284-304 · 31 readings
  1. 2026-09-01301
  2. 2026-09-02296
  3. 2026-09-04290
  4. 2026-09-06295
  5. 2026-09-08299
  6. 2026-09-09296
  7. 2026-09-13290
  8. 2026-09-15284
  9. 2026-09-17289
  10. 2026-09-20290
  11. 2026-09-21293
  12. 2026-09-25302
  13. 2026-09-26300
  14. 2026-09-28303
  15. 2026-10-04287
  16. 2026-10-08300
  17. 2026-10-09302
  18. 2026-10-10298
  19. 2026-10-13302
  20. 2026-10-16285
  21. 2026-10-17291
  22. 2026-10-18290
  23. 2026-10-19291
  24. 2026-10-20297
  25. 2026-10-21296
  26. 2026-10-22300
  27. 2026-10-24298
  28. 2026-10-25299
  29. 2026-10-29301
  30. 2026-10-30298
  31. 2026-11-01304
Rating
unchanged since 01.09
reviewsrating 5.00 · 31 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-06reviews1rating5.00
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-09reviews1rating5.00
  7. 2026-09-13reviews1rating5.00
  8. 2026-09-15reviews1rating5.00
  9. 2026-09-17reviews1rating5.00
  10. 2026-09-20reviews1rating5.00
  11. 2026-09-21reviews1rating5.00
  12. 2026-09-25reviews1rating5.00
  13. 2026-09-26reviews1rating5.00
  14. 2026-09-28reviews1rating5.00
  15. 2026-10-04reviews1rating5.00
  16. 2026-10-08reviews1rating5.00
  17. 2026-10-09reviews1rating5.00
  18. 2026-10-10reviews1rating5.00
  19. 2026-10-13reviews1rating5.00
  20. 2026-10-16reviews1rating5.00
  21. 2026-10-17reviews1rating5.00
  22. 2026-10-18reviews1rating5.00
  23. 2026-10-19reviews1rating5.00
  24. 2026-10-20reviews1rating5.00
  25. 2026-10-21reviews1rating5.00
  26. 2026-10-22reviews1rating5.00
  27. 2026-10-24reviews1rating5.00
  28. 2026-10-25reviews1rating5.00
  29. 2026-10-29reviews1rating5.00
  30. 2026-10-30reviews1rating5.00
  31. 2026-11-01reviews1rating5.00

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
  • Act on the current tab, but only after you click it activeTab

The full permission history for this extension

What changed recently

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

The publisher

simondev.

Like this one

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

  1. CSS and XPath checker Describes nearly the same job, with an established audience 20k users ★ 2.8
  2. CSS Selector Wizard Describes nearly the same job, smaller audience 7 users
  3. Doc Detective Companion Describes nearly the same job, smaller audience 8 users
  4. CSS Selector Tester Describes nearly the same job, smaller audience 4k users ★ 5.0
  5. Copy CSS Selector Describes nearly the same job, smaller audience 139 users ★ 5.0

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.

Want this mark on your extension in our catalog?

Verify that you are its author and you can show this mark on the card, with live banners for your site and README. How verification works

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

Connect it in a minute See what the panel does
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.

Users and rating on Ext Ops Panel

Markdown

[![Users and rating on Ext Ops Panel](https://extops.dev/extensions/gafpmbhfhknmigcacfokobfbkikhkhnp/badge.svg)](https://extops.dev/extensions/gafpmbhfhknmigcacfokobfbkikhkhnp)

HTML

<a href="https://extops.dev/extensions/gafpmbhfhknmigcacfokobfbkikhkhnp"><img src="https://extops.dev/extensions/gafpmbhfhknmigcacfokobfbkikhkhnp/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 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built