Add Javascript

by oray · kamerakademi.blogspot.com · Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 18 Oct 2026

Very lightweight extension to add JavaScript into websites. Inject custom JS into any domain or path instantly.

Users

112

+89 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#81K

#68K among extensions

Version

1.0.1

updated 18 Oct 2026

Users

monthly, 5 months

Latest, 18 Oct 2026: 112 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 18 Oct 2026: 2 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Add Javascript

Add Javascript is a powerful, lightweight, and developer-friendly browser extension that allows you to inject custom JavaScript into any domain or specific URL path. Features: Toggle with Ease: Quickly enable or disable individual scripts, or use the Global Toggle to turn off all injections at once. Multiple Code Blocks per Script: Organize your JS code into separate blocks with titles for better readability and maintenance. Domain or Path Matching: Inject scripts on exact domains (medium.com) or specific paths (medium.com/membership). Subdomains and paths are handled independently. Search & Filter: Easily find your custom scripts among dozens of entries using the built-in search bar. Import & Export: Move your custom scripts between different browsers or backup your data with a single click via JSON files. Privacy Focused: No tracking, no external servers. Your custom scripts are stored locally in your browser.