---
title: "CSS Class Highlighter: CSS Inspector – Chrome extension stats, history and permissions"
description: "18 users, no ratings yet. Version 4.1.0, updated 2026-10-13. Requests 7 permissions."
url: "https://extensiontracker.com/extension/niknpmlnbnfmodfdpemjloobmncknfaa"
---

# CSS Class Highlighter: CSS Inspector

Live in the Chrome Web Store.

- Users: 18
- Rating: no ratings yet
- Last checked: 2026-11-12 23:56 UTC
- Users gained in 7 days: +4
- Users gained in 30 days: +4 (+28.6%)
- Rank by users: #126,466 of 292,125 live extensions
- Rank in Developer Tools: #12,821 of 30,444

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Inspect CSS, highlight classes, compare styles, and explore design tokens. A developer workbench by CodeHorizon.

- Extension ID: `niknpmlnbnfmodfdpemjloobmncknfaa`
- Developer: [CodeHorizon](https://extensiontracker.com/developer/u83df82119dfca14838a793d54682365a)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2025-08-12
- Last updated: 2026-10-13
- Version: `4.1.0`
- Size: 277 KiB
- Minimum Chrome: 127
- Languages (1): English
- Website: `codehorizon.in`
- Support page: `https://codehorizon.in/#contact`
- Chrome Web Store: <https://chromewebstore.google.com/detail/css-class-highlighter-css/niknpmlnbnfmodfdpemjloobmncknfaa>
- View its code or download CRX: <https://crxpeek.com/extension/niknpmlnbnfmodfdpemjloobmncknfaa>
- Search Google for the ID: <https://www.google.com/search?q=%22niknpmlnbnfmodfdpemjloobmncknfaa%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-12 | 18 | – | – |
| 2026-10-14 | 14 | – | – |
| 2026-10-12 | 14 | – | – |

## What changed

Every change found on a check, newest first.

- 2026-10-14: Now trusted by Enhanced Safe Browsing.
- 2026-10-14: New version `4.1.0`, replacing `3.2.8`.
- 2026-10-14: Renamed from “CSS Class Highlighter” to “CSS Class Highlighter: CSS Inspector”.
- 2026-10-14: The summary on the listing changed.
- 2026-10-14: Added the permission `scripting`.
- 2026-10-14: Added the sites `file:///*`, `http://*/*`, `https://*/*`. Removed the site `<all_urls>`.
- 2026-10-14: Added the sites where it runs scripts `file:///*`, `http://*/*`, `https://*/*`. Removed the site where it runs scripts `<all_urls>`.
- 2026-10-14: Minimum Chrome version raised from 88 to 127.
- 2026-10-14: The developer's website link changed.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-10-12.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

**Every website:** it can read and change your data on all the sites you visit.

### Sites

- `file:///*`: Files on your computer
- `http://*/*`: Every website
- `https://*/*`: Every website

### Sites where it runs scripts

- `file:///*`: Files on your computer
- `http://*/*`: Every website
- `https://*/*`: Every website

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `contextMenus`: Add items to the right-click menu
- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [ShopGrade: Store Audit & SEO Checker for Shopify](https://extensiontracker.com/extension/aenccbnkkimncdjikjgapconaegnmbeo) | 18 | – | – | Tools |
| [TubeFocus: Hide YouTube Shorts & Distractions](https://extensiontracker.com/extension/ghmoajebamiileeffdiplohlbgnhnadl) | 9 | – | – | Functionality & UI |
| [Notilo - Enhanced Text Highlighter & Note Taker](https://extensiontracker.com/extension/ocgkllkcodafimnkheijpachancljmdk) | 5 | – | – | Functionality & UI |
| [TabCluster - Smart Tab Organization](https://extensiontracker.com/extension/faligjbhpbmnajkdpcefhebinddmbmbo) | 4 | – | – | Functionality & UI |
| [Keeptake: Free Screen Recorder with Webcam, No Watermark](https://extensiontracker.com/extension/dbbpaodjhodpdiheeoogeflmfbcfbdcj) | – | – | – | Workflow & Planning |

All 6 extensions by [CodeHorizon](https://extensiontracker.com/developer/u83df82119dfca14838a793d54682365a).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-11-12 23:56 UTC; next check around 2026-12-13.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “CSS Class Highlighter: CSS Inspector” (niknpmlnbnfmodfdpemjloobmncknfaa). Chrome Web Store data, last checked 2026-11-12. https://extensiontracker.com/extension/niknpmlnbnfmodfdpemjloobmncknfaa. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_niknpmlnbnfmodfdpemjloobmncknfaa,
  title   = {CSS Class Highlighter: CSS Inspector (niknpmlnbnfmodfdpemjloobmncknfaa)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-12},
  url     = {https://extensiontracker.com/extension/niknpmlnbnfmodfdpemjloobmncknfaa},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/niknpmlnbnfmodfdpemjloobmncknfaa>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.