Advanced Java Launch

Run Javascript

Run custom Javascript, each time you visit a website ⚡ Run custom JavaScript on any website — automatically, every time you visit. Save your scripts per domain. They execute on page load, every single time. No setup, no config files, no extra tools. Just your code running where you want it. 1. Visit any website 2. Click the Run JavaScript icon 3. Write or paste your custom JavaScript code 4. Save — your script auto-runs on every future visit to that domain Toggle scripts on/off per site with one click. Scripts persist across browser restarts. 🎯 WHAT YOU CAN DO ✅ Remove ads, popups, banners, cookie notices, and distracting elements ✅ Inject custom CSS — dark mode, custom themes, font changes, layout fixes ✅ Auto-fill forms, pre-select dropdowns, auto-click buttons ✅ Auto-run scripts on page load without manual intervention ✅ Extract data, scrape content, highlight information on any page ✅ Add features websites are missing — keyboard shortcuts, UI tweaks ✅ Automate repetitive tasks — clicks, form submissions, navigation ✅ Inject custom HTML elements, dashboards, or productivity widgets ✅ Test and prototype frontend code changes on live websites ✅ Debug and inspect page behavior with custom console scripts ✅ Modify DOM elements, rewrite page content, restructure layouts 💻 BUILT FOR DEVELOPERS ✅ Ace code editor with full syntax highlighting and auto-indent ✅ jQuery library included (1.12.4, 2.2.4, 3.3.1) — or use vanilla JavaScript ✅ Execute button for instant testing before saving ✅ Scripts stored per hostname using Chrome storage API ✅ One-click enable/disable toggle per domain ✅ Works on all http and https pages ✅ Manifest V3 — secure, fast, modern Chrome extension architecture ✅ Service worker background script — no performance overhead ✅ Sandboxed execution with duplicate run prevention → Web developers testing and debugging on production sites → Frontend engineers prototyping UI changes live → QA testers injecting test scripts and automation → Digital marketers running A/B tests and analytics scripts → Power users customizing websites to fit their workflow → Students learning JavaScript with real-world web pages → Automation enthusiasts replacing repetitive manual tasks → No data collection, no tracking, no analytics → No account required — works immediately after install → All scripts stored locally in your browser → Open source and transparent → Manifest V3 security standards → No external network requests Lightweight. Fast. Private. Just your JavaScript, running where you want it. Install now → click the icon → paste your code → done.

Javadoc Search Frame

Javadoc incremental search for packages and classes. When viewing Javadocs, this extension replaces the package and class frames with a single search frame that allows searching incrementally through all packages and classes at once. To have this extension apply to file:// URLs, configure it from the chrome://extensions/ page. Also available for Mozilla Firefox: https://greasyfork.org/en/scripts/3758-javadoc-search-frame

Toggle JavaScript

Enable or disable JavaScript without the hassle. It was built with web developers in mind, but is equally useful for anyone who wants to quickly enable/disable JavaScript without having to dig deep into Chrome's Settings panel. Also, similar extensions can cause pages to be rendered inaccurately after disabling JavaScript. This extension uses an auto-reload technique to ensure that pages are always rendered correctly after switching JavaScript on or off. I hope you enjoy using it - if you do, please tell your friends about it and help me out by giving it a positive review. Thanks!

User JavaScript and CSS

User JavaScript and CSS on any website Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page. Change log: Version 3.1.0 - Starting from Chrome version 138, the method for allowing user scripts in the browser has changed - Fixed a bug where styles weren't removed when a rule was deleted - Fixed a bug where not all rules applied to the page were shown in the rules popup Version 3.0.5 beta - the mode of injection of styles into the DOM has been returned - minor fixes Version 3.0.3 beta - modules are now in the same scope - CSS injection improvement - and other minor fixes Version 3.0.2 beta - hotfix: fixed bug with registration and deletion of scripts - added feature to change start scripts before page loading - added feature to strictly read URL patterns Version 3.0.0 beta - The extension has been moved to MV3 - Added option to inject scripts and styles in iframe - Added the feature of live CSS - Added the One Dark theme and a few other improvements Version 2.0.0 - 90% of the code has been rewritten; - Improved UI; - Added SASS support; - Added Prettier formatter - Other minor improvements Version 2.0.0 - 90% of the code has been rewritten; - Improved UI; - Added SASS support; - Added Prettier formatter - Other minor improvements Version 1.2.8 - Added function for naming rules - Updated translations Version 1.2.7 - Updated all extension libraries to current versions Version 1.2.6 - Fixed error in console "Unchecked runtime.lastError: The message port closed before a response was received" - Improved domain getter from URL - Updated Ace Editor and jQuery to latest Version 1.2.5 - Resolved bug with '@import' and "Auto-important css" feature - "Auto-important css" feature now disabled by default - Added feature to exclude URL's by '!' symbol at start - Updated jQuery and Ace editor to last versions - Other small fixes Version 1.1.5 - Returned old method injection and added option to toggle this. Alternative method has feature to avoid CORS issues, but has only DOM access to site (no JS context). Old and now primary method is injecting by tag on site bottom. - Added scroll past end in editor Version 1.0.0 - Full redesign of extension - Added more settings - Added toggleable counter on extension icon Version 0.96 - Full redesign of extension interface - 80% code of extension core has been rewritten - New feature: change URL field and mask with "*" symbol (eg *.expample.com) - Editor window opens in new tab in split layout - Disabled autosave feature - Configurable editor in settings - New icon Version 0.93 - Fixed a bug where JavaScript is not always inserted in a page - Outdated processes are disabled Beta test. If you find any problem or have a question contact me on email.