InjectJS – JavaScript Injector & Custom Script Manager

by injectjsteam · injectjs.net · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Inject custom JavaScript (JS) into any webpage, automate tasks, and manage scripts. Ideal for developers and power users.

Users

903

+102 in 30 days

Rating

4.3 / 5

−0.33 in 30 days

Ratings

+1 in 30 days

Store rank

#33K

#28K among extensions

Version

4.1.0

updated 19 Jan 2026

Users

monthly, 15 months

Latest, 15 Oct 2026: 903 usersMove the mouse over the chart for any month

Ratings count

monthly, 15 months

Latest, 15 Oct 2026: 11 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 InjectJS – JavaScript Injector & Custom Script Manager

Inject JS lets you effortlessly inject custom JavaScript (JS) scripts into any webpage. Automate tasks, enhance websites, and instantly modify page behaviors. New Update: * Import/Export Scripts * Expanded Script File Size Limit Key Features: * Inject JavaScript instantly into any website. * Custom Script Management: Create, edit, enable, disable, or delete scripts. * URL & Pattern Matching: Precisely control where scripts run using URL or regex. * Right-Click Context Menu: Quickly execute scripts manually on any webpage. * Mini Dashboard: Access scripts directly by clicking the extension's icon. * Code Auto-Formatting: Built-in editor ensures clean and error-free JS code. * Fully Local & Secure: Scripts remain securely stored on your device. * Manifest V3 Compliant: Meets Chrome’s latest performance and security standards. How to Use Inject JS: 1. Open Inject JS to create a new script. 2. Paste or write your JavaScript code and set URL patterns. 3. Enable scripts to auto-run, or trigger manually via right-click context menu or the mini dashboard (extension icon). Inject JS is perfect for developers, QA testers, automation enthusiasts, and power users who want easy control of JavaScript injection. Install Inject JS today to transform and personalize your browsing experience!