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CSS Class Highlighter: CSS Inspector

Chrome extension by CodeHorizon · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 20 users, barely installed.

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
20
Rating
not rated yet
Users, last 20 days
+6
Version
4.1.0
Updated in the store
2026-10-13
Published
2025-08-12
Manifest
V3
Browser access
4 permissions, 3 site patterns

How it has moved

Users
+6 since 12.10
14-20 · 10 readings
2026-10-12: appeared in the store2026-10-13: gained the good publisher record badge2026-10-13: released 4.1.0
  1. 2026-10-1214appeared in the store
  2. 2026-10-1615
  3. 2026-10-1815
  4. 2026-10-1916
  5. 2026-10-2117
  6. 2026-10-2217
  7. 2026-10-2416
  8. 2026-10-2717
  9. 2026-10-2920
  10. 2026-10-3120
Users
+6 since 12.10
14-20 · 10 readings
2026-10-12: appeared in the store2026-10-13: gained the good publisher record badge2026-10-13: released 4.1.0
  1. 2026-10-1214appeared in the store
  2. 2026-10-1615
  3. 2026-10-1815
  4. 2026-10-1916
  5. 2026-10-2117
  6. 2026-10-2217
  7. 2026-10-2416
  8. 2026-10-2717
  9. 2026-10-2920
  10. 2026-10-3120

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.

  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
  • Add items to the right-click menu contextMenus
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 4.1.0 · Asked for more permissions (7, was 4) (changed: site access, pages it runs its code on, browser permissions)

What changed recently

  1. Now requires Chrome 127
  2. Package size changed
  3. Asked for more permissions (7, was 4) (changed: site access, pages it runs its code on, browser permissions)
Show the remaining 5
  1. Store description rewritten (90 → 112 characters)
  2. Renamed from "CSS Class Highlighter" to "CSS Class Highlighter: CSS Inspector"
  3. Released version 4.1.0 (was 3.2.8)
  4. Gained the Established publisher badge
  5. Appeared in the store

The publisher

CodeHorizon publishes 3 listings we track, 52 users between them. Listed website: codehorizon.in.

  1. ShopGrade: Store Audit & SEO Checker for Shopify CodeHorizon · Productivity · Tools · published 2026-08-30 17 users
  2. TubeFocus: Hide YouTube Shorts & Distractions CodeHorizon · Make Chrome Yours · Functionality · published 2025-08-08 15 users

Like this one

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

  1. CSS class finder Describes nearly the same job, smaller audience 44 users ★ 5.0
  2. Tailwind Inspector Describes nearly the same job, smaller audience 14 users
  3. Smart CSS Debugger Describes nearly the same job, smaller audience 39 users ★ 5.0
  4. CSS Snap Describes nearly the same job, smaller audience 3 users
  5. CSS Scanner Pro Describes nearly the same job, smaller audience 165 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.

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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/niknpmlnbnfmodfdpemjloobmncknfaa/badge.svg)](https://extops.dev/extensions/niknpmlnbnfmodfdpemjloobmncknfaa)

HTML

<a href="https://extops.dev/extensions/niknpmlnbnfmodfdpemjloobmncknfaa"><img src="https://extops.dev/extensions/niknpmlnbnfmodfdpemjloobmncknfaa/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 2026-10-29. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built