⚡ Injector

Automatically run JavaScript on any website — free, open-source, no Chrome Web Store required.

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Introduction

Injector is a Chrome extension that allows you to automatically run any JavaScript code whenever you open a specific website. Use it to hide ads, auto-fill forms, monitor prices, receive Telegram notifications — and much more.

🌐 Visit our landing page: injector.thuandv.top

No programming knowledge required. The extension includes 20+ ready-to-use templates and integrated prompts to help you get custom scripts written by ChatGPT.

Features

• Auto-inject Scripts — Scripts automatically run when pages load, supporting URL patterns with wildcard *
• 20+ Templates — Ready to use without coding: remove ads, dark mode, price monitoring, clean YouTube/Facebook/Twitter...
• AI-assisted — Built-in prompt templates to get ChatGPT/Gemini to write scripts according to your requirements
• Hide Elements — Hide elements by CSS selector directly from popup, no coding required
• Telegram Notifications — Receive phone notifications when prices change or content updates
• SPA Support — Automatically detects URL changes in React/Vue/Next.js and re-runs scripts at the right time
• Export/Import — Backup all scripts to JSON, easily transfer to another machine
• CSP Bypass — Uses nonce stealing technique to run scripts on pages with strict Content Security Policy

Installation

Since the extension is not available on Chrome Web Store (Google charges $5 developer fee), install it manually in 4 steps:

Step 1 — Download

Download the ZIP file from the Releases page, or use the direct link:

curl -L https://github.com/ThuanD/Injector/releases/latest/download/Injector-Extension.zip -o Injector.zip

Step 2 — Extract

Extract the ZIP file. You will have the Injector-main/ directory.

Step 3 — Enable Developer Mode

Open Chrome, go to chrome://extensions, turn on the Developer mode toggle in the top right corner.

Step 4 — Load extension

Click Load unpacked → navigate to the Injector-main directory → select the subdirectory Injector-Extension.

The ⚡ icon will appear on your toolbar — installation complete.

Usage Guide

Using ready-made templates

1. Click the ⚡ icon on the toolbar → Manage All Scripts
2. Go to the 📋 Templates tab, select the appropriate template
3. Fill in URL Pattern — which pages you want the script to run on (e.g., *.youtube.com)
4. Click ＋ Add Script → reload the page and you're done

Writing scripts with AI

1. Go to the 📖 Guide tab in the Options page
2. Copy one of the sample prompts according to the type of task you want to do
3. Paste into ChatGPT, describe your requirements → get the code
4. Create a new script, paste the code, fill in URL Pattern → save

URL Pattern

Pattern	Meaning
*	Run on all pages
*.youtube.com	All YouTube pages
*.tiki.vn/product/*	Only Tiki product pages
https://docs.google.com/*	All Google Docs

Security Warning

JavaScript scripts can read all content on the page, including passwords, cookies, and banking information.

• Do not paste code from strangers sent via social media, Zalo, Telegram
• Do not run scripts on banking, e-wallet, or important login pages
• Should read the code carefully or have ChatGPT explain it before running

Contributing

Pull requests and issues are always welcome. Some ways to contribute:

• Add new templates to templates.js
• Fix bugs, improve features
• Improve UI/UX

Support

If the extension is useful to you, please support the author with a Chupa Chups ☕