Live CSS Tester

Easily inject CSS into a webpage for testing

As of May 2026, Live CSS Tester has 2,000 users and a 3.67/5 rating from 6 reviews in the Developer Tools category.

Brandon Fowler Developer Tools★ Featured

Chrome Web Store ↗.crx

Users0%

2.0K

2,000

Rating−12.6%

3.67

6 reviews

Reviews+20.0%

6

Version

2.0.0

Manifest V3

History

2 snapshots

Tracking since May 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
May 1, 2026	2.0K	4.20	5	2.0.0
May 30, 2026	2.0K	4.20	5	2.0.0
Now	2.0K	3.67	6	2.0.0

Permissions & access

Permissions: storagescripting
Host access: <all_urls>

Screenshots

Live CSS Tester screenshot 1

Live CSS Tester screenshot 2

Live CSS Tester screenshot 3

About

This plugin allows you to easily add CSS into a webpage for testing. The editor is available through a popup or the devtools.

Features:
* Enable/Disable CSS
* Download CSS
* Upload CSS
* Dark mode
* Word wrap
* Autocomplete
* Devtools support
* Remember last input

Technical

Version: 2.0.0
Manifest: V3
Size: 147KiB
Min Chrome: 88
Languages: 1
Featured: Yes

Metadata

ID: djdnjlkbgeddaglpomonofdcahkpmjaj
Developer ID: u1823113960941e8d583179df78f62a98
Developer Email: [email protected]
Created: May 15, 2019
Last Updated (Store): Jan 3, 2023
Last Scraped: May 30, 2026
Website: —
Support URL: —
Privacy Policy: —

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Data sourced from the Chrome Web Store · last verified May 30, 2026.