Unused CSS/JS Detector

Detects unused CSS and JS files on web pages

As of May 2026, Unused CSS/JS Detector has 263 users and a 3.50/5 rating from 2 reviews in the Developer Tools category.

Usersdown 1.5 percent1.5%
263
263
Ratingdown 30.0 percent30.0%
3.50
2 reviews
Reviewsup 100.0 percent+100.0%
2
Version
1.0
Manifest V3

History

2 snapshots

Tracking since Apr 25, 2026.

270.56266.5262.44Apr 25, 2026May 22, 2026
View as table
DateUsersRatingReviewsVersion
Apr 25, 20262675.0011.0
May 22, 20262703.5021.0
Now2633.5021.0

Permissions & access

Permissions
activeTabstoragedeclarativeNetRequestdeclarativeNetRequestFeedback
Host access
<all_urls>

Screenshots

Unused CSS/JS Detector screenshot 1

About

Unused CSS/JS Detector
Optimize Your Web Development Workflow with Precision

Enhance your web development efficiency with the Unused CSS/JS Detector, a powerful Chrome extension designed for developers and web optimization enthusiasts. This tool helps you identify and manage unused CSS and JavaScript files on any webpage, streamlining your optimization process and improving page load performance.

Key Features:
1. Detect Unused Resources: Automatically scans the current page to pinpoint unused CSS stylesheets and JavaScript files, saving you valuable time during audits.
2/ Block/Unblock Functionality: Easily block detected unused resources with a single click and unblock them when needed, with changes persisting across sessions.
3. Real-Time Load Time Tracking: Monitor page load times with precision (down to 0.000ms) and see performance improvements as you block resources.
4. Reset Option: Quickly reset all blocked resources with the "Reset Blocks" button to revert to the original state.
5. User-Friendly Interface: Features a clean popup with clickable links to resource URLs, truncated for readability with full URLs available on hover.

How It Works:
1. Click the extension icon to open the detector.
2. Analyze the page to see a list of potentially unused CSS and JS files.
3. Use the "Block" button to prevent resources from loading, and watch the load time update after a page refresh.
4. Unblock or reset as needed to fine-tune your optimization.

Perfect For:
- Web developers optimizing site performance
- Front-end engineers auditing codebases
- SEO specialists improving page speed
- Anyone looking to reduce bloat in web projects

Installation:
Simply add the Unused CSS/JS Detector to your Chrome browser, and start optimizing your web pages today!

Optimize smarter, not harder. Download the Unused CSS/JS Detector now and take control of your web resources!

Technical

Version
1.0
Manifest
V3
Size
20.88KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
peppnccmofkblbmghhfgdaaohemoaeog
Developer ID
u321bfbc013a162e1290f4da1a0654b7c
Developer Email
[email protected]
Created
Mar 20, 2025
Last Updated (Store)
Mar 20, 2025
Last Scraped
May 22, 2026
Website
Support URL

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Data sourced from the Chrome Web Store · last verified May 22, 2026.