Run Javascript - Chrome Web Store

Overview

Run custom Javascript, each time you visit a website

🐘 Transform Any Website Into Your Personal Playground with Custom JavaScript The Ultimate Chrome Extension for Web Developers, Power Users & Automation Enthusiasts Take complete control of your browsing experience! This powerful extension lets you run custom JavaScript on any website automatically, turning every page into your personal development sandbox. ## ✨ What Makes This Extension Amazing? 🎯 Instant Website Customization ✅ Run custom JavaScript on ANY website automatically ✅ Real-time code editor with syntax highlighting ✅ Domain-specific scripts that persist forever ✅ One-click enable/disable toggle 💻 Professional Developer Experience ✅ Built-in Ace Editor with intelligent code completion ✅ Multiple jQuery versions (1.12.4, 2.2.4, 3.3.1) or go library-free ✅ Persistent storage across browser sessions ✅ Advanced error handling and debugging tools 🔒 Enterprise-Grade Security ✅ Manifest V3 compliant (latest Chrome standards) ✅ Sandboxed execution environment ✅ Modern service worker architecture ✅ Smart duplicate execution prevention ## 🌟 Perfect For: 🧑💻 Web Developers - Test ideas, prototype features, debug issues instantly 🔧 Power Users - Customize websites to match your exact workflow 📈 Digital Marketers - A/B test changes, extract analytics data 🎓 Students & Educators - Learn JavaScript in real-world environments 🤖 Automation Enthusiasts - Automate repetitive web tasks effortlessly ## 🎮 Real-World Use Cases: • Remove annoying ads and popups with surgical precision • Auto-fill forms with your personal data • Change website themes to dark mode or custom colors • Extract data from any page for analysis • Add missing features that websites should have • Create productivity dashboards on any site • Automate repetitive clicks and form submissions • Test responsive designs with custom CSS ## 🚀 Why Choose This Over Others? | Feature | This Extension | Others | |---------|---------------|---------| | Ease of Use | ✅ One-click setup | ❌ Complex config | | Security | ✅ Manifest V3 + Sandboxing | ❌ Outdated security | | Performance | ✅ Modern architecture | ❌ Legacy code | | Developer Experience | ✅ Syntax highlighting + jQuery | ❌ Plain text editors | | Reliability | ✅ Smart execution prevention | ❌ Script conflicts | ## ⚡ Get Started in 60 Seconds: 1. Install the extension 2. Visit any website you want to customize 3. Click the extension icon in your toolbar 4. Write JavaScript or choose from templates 5. Hit "Save & Run" and watch the magic happen! ✨ No coding experience? No problem! Start with simple examples like changing colors or hiding elements, then gradually build more complex automations. ## 🎯 Immediate Benefits: • Save hours daily by automating repetitive tasks • Fix annoying UI issues that developers ignore • Learn JavaScript in a practical, fun environment • Boost productivity with personalized web experiences • Join a community of creative web customizers Transform your browsing experience today! Whether you're automating tasks, learning to code, or just making the web work better for you, this extension is your gateway to unlimited possibilities. 🌟 Ready to take control of the web? Install now and start customizing!

• Version

  5.1.1

• Updated

  October 20, 2025

• Size

  1.03MiB

• Languages

• Developer

• Non-trader

  This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.