JS and CSS snippets for web icon

JS and CSS snippets for web

by Yupma

v1.0.0 Updated Jan 15, 2026 1.01MiB
CWS
13
Users
★ 5.00
1 reviews
#110615
of 201.9K
workflow
#19780 of 31K

Description

Snippet Injector lets you add your own code to websites based on URL rules. Create and manage snippets that run automatically when pages load. Perfect for developers, QA engineers, power users, and anyone who wants to customize websites or test scripts. Key Features Inject JavaScript or CSS: Run code in the page’s main world or isolated CSS safely. Flexible URL rules: Apply snippets to all websites, a single domain, exact URLs, or custom regular expressions. Enable or disable snippets: Turn snippets on or off without deleting them. Persistent across reloads: Snippets automatically run when pages reload. Dynamic page support: Works with modern single-page apps (SPAs) and iframe-based sites. Built-in code editor: Write and edit snippets directly in the popup using a clean editor interface. Who It’s For - Web developers testing or debugging code. - QA engineers automating workflows. - Power users customizing web apps or dashboards. - Anyone looking for a lightweight alternative to Tampermonkey. Permissions & Privacy - Tabs: Check the active tab URL to run matching snippets. - Storage: Save your snippets and settings locally. - Scripting: Inject JavaScript and CSS into websites safely. - No data is collected, all code runs locally, and your snippets stay private. - Take control of your browser. Customize websites your way with Snippet Injector.
JS and CSS snippets for web screenshot 1JS and CSS snippets for web screenshot 2

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Permissions (3)

Permissions

scripting Can inject scripts into web pages storage Can store data locally in your browser tabs Can see your open tabs and their URLs

Details

Version 1.0.0
Updated Jan 15, 2026
Size 1.01MiB
First Seen Mar 27, 2026

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