Run custom JavaScript on any website.
Custom JavaScript for Websites 2 Extension
Your scripts are kept by the Chrome sync API and applied across domain URLs. You can inject custom JavaScript based on domain or custom Regular Expression (since v3.1.1).
This extension supports dedicated tab to edit your codes since v2.5.1
You can use some built-in libraries such as
* jQuery 1.12.4
* jQuery 2.2.4
* jQuery 3.2.1
* Indefinite Observable 1.0.1
* MooTools 1.6.0
or/and your own external scripts.
Use cases:
* Site debugging (wrong list sort, etc.)
* Extract useful information from website, such as billings/orders metadata
* Hide annoying popups and Ads
* Custom UI
* Anything you can think of :)
Inject large JavaScript: https://github.com/xcv58/Custom-JavaScript-for-Websites-2#how-do-i-inject-large-javascript
New features:
Ace Editor (formating, highlight, undo/redo by hotkeys)
Draft auto save (so doesn't matter when you close the window without saving)
Hosts (websites) switch (you can browse customjs of other websites)
Include external script (eq. Underscore.js is cool)
Thanks to:
Ace - http://ace.c9.io/
Pure - http://purecss.io/
Source Manifest.json
"update_url": "https://clients2.google.com/service/update2/crx",
"description":"Run custom JavaScript on any website.",
"version":"3.4.12",
"manifest_version":2,
"name":"Custom JavaScript for Websites 2",
"short_name":"customjs",
"author":"xcv58",
"minimum_chrome_version":"52.0.2743",
"icons":{"16":"icon-16.png",
"19":"icon-19.png",
"32":"icon-32.png",
"38":"icon-38.png",
"48":"icon-48.png",
"128":"icon-128.png"},
"background":{"scripts":["background.js"],
"persistent":false},
"content_scripts":[{"all_frames":true,
"js":["run.js"],
"matches":["
"web_accessible_resources":["*.css",
"base.js"],
"browser_action":{"default_icon":"icon-48.png",
"default_popup":"popup.html"},
"content_security_policy":"script-src 'self' 'unsafe-eval' https://*.googleapis.com https://gitcdn.link https://cdnjs.cloudflare.com; object-src 'self'",
"permissions":["storage",
"http://*/",
"https://*/",
"tabs"]}
Similar Extensions
User JavaScript and CSS 50,000+ 564 ★ 1.62MiB
Scripty - Javascript Injector 50,000+ 69 ★ 22.85KiB
Javascript Injector 50,000+ 9 ★ 59.53KiB
Web Injector 50,000+ 8 ★ 152KiB
InjectCode 50,000+ 26 ★ 215KiB
Run Javascript 50,000+ 46 ★ 2.18MiB
Javascript & Css auto injection 50,000+ 14 ★ 899KiB
JS-Exec 50,000+ 3 ★ 1.83MiB
Disney+ PIP 50,000+ 55 ★ 14.55KiB
Custom JavaScript for Websites 3 50,000+ 3 ★ 572KiB
Witchcraft: JS/CSS injector 50,000+ 10 ★ 27.24KiB
User CSS 50,000+ 264 ★ 298KiB
Haxball All-in-one Tool 50,000+ 17 ★ 807KiB
JScript tricks 50,000+ 50 ★ 340KiB
JS Inject 50,000+ 0 ★ 551KiB
JavaScript Injector 50,000+ 33 ★ 397KiB
Console Injector 50,000+ 12 ★ 20.4KiB
Live Custom CSS,JS injector on pages 50,000+ 35 ★ 140KiB
Disney+ Picture in Picture 50,000+ 248 ★ 59.57KiB
Code Injector 50,000+ 10 ★ 110KiB
Web Code Injector 50,000+ 5 ★ 2.36MiB
Custom Style Script 50,000+ 37 ★ 49.86KiB
Page Manipulator 50,000+ 35 ★ 2.17MiB
Stylebot 50,000+ 1603 ★ 10.27MiB
User reviews
Николай Друг (NickIAm) (ID: 000000be17541def) Voted 5 ★ - Updated 10/26/2023
Anshu kumar (ID: 0000003b52bfd3fc) Voted 5 ★ - Updated 09/20/2023
Nathi Nonthasen (ID: 000000563b3f9f35) Voted 4 ★ - Updated 08/22/2023
Ramit Bhalla (ID: 0000004750f2f884) Voted 4 ★ - Updated 03/23/2023
Hatem Badawi (ID: 000000f799eed600) Voted 5 ★ - Updated 02/08/2023