CRX id
ddbjnfjiigjmcpcpkmhogomapikjbjdk
ddbjnfjiigjmcpcpkmhogomapikjbjdk
Description from extension meta
Run custom JavaScript on any website.
Image from store
Description from store
Run custom JavaScript on any website. Use this tool to inject custom JavaScript in any website.
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/
Latest reviews
- (2025-07-14) Kiattisak Jantasri: How I can find my script in local storage ?
- (2025-03-08) Endre Varga: Please please update your extension! It's no longer supported! :'(
- (2024-10-31) NotAHackusator: Doesn't work on every website. You'll get "Blocked script execution in 'about:blank' because the document's frame is sandboxed and the 'allow-scripts' permission is not set." on YouTube when trying to access the document.
- (2024-10-25) Serdar Degirmenci: It was one of the extensions I've been using for years. Now, Google says it will be removed soon. Very sad. I would be very happy if you decide to make the project public.
- (2024-09-15) Daniel Ng'ang'a: 10 out of 10 , simply the best ever extension i have used,
- (2024-07-16) Manuelito Isaiah: It doesn't work if I use a huge amount of JS
- (2024-05-31) Christian Francis: works!
- (2024-05-13) Mart Th: Great extension ! Inject custom js into the website with ease.
- (2024-03-09) Anna F.: It works!! :D Dark mode would be nice too.
- (2024-02-23) Viktor Yakovenko: awesome
- (2024-01-31) Diego Gonzalez Marignac: Works as expected, nice to be able to include jQuery right from the extension.
- (2024-01-30) arturo fernandez: works great
- (2024-01-16) Martin Petkov: Its a good extension but i need to open the dev console and leave it open in order to work. Anyone with similar issue ?
- (2023-12-30) Faster PC (Ali Tahir): Works perfectly!!!!!, Will it work in future with Manfiest V3?
- (2023-11-17) Adam Zahurák: Time saver! Works great!
- (2023-10-26) Николай Друг (NickIAm): It's an insane extension that I cannot live without. It made my life so much easier on so many websites!
- (2023-10-26) Николай Друг (NickIAm): It's an insane extension that I cannot live without. It made my life so much easier on so many websites!
- (2023-09-20) Anshu kumar: love it
- (2023-09-20) Anshu kumar: love it
- (2023-08-22) Nathi Nonthasen: Please allow more code size, import & export.
- (2023-08-22) Nathi Nonthasen: Please allow more code size, import & export.
- (2023-03-23) Ramit Bhalla: Awesome plugin, wish it had an option to run a script automatically when the page loads instead of having to open and click save each time
- (2023-03-23) Ramit Bhalla: Awesome plugin, wish it had an option to run a script automatically when the page loads instead of having to open and click save each time
- (2023-02-08) Hatem Badawi: magical
- (2023-02-08) Hatem Badawi: magical
- (2022-10-28) Alexander Aristizabal: It is great, but today I had a bad experience, I can not simply work with special characters like á, when executed shows a squre for non recognized character
- (2022-10-28) Alexander Aristizabal: It is great, but today I had a bad experience, I can not simply work with special characters like á, when executed shows a squre for non recognized character
- (2022-10-13) Khalfani Wadlington: It did everything that it said it would do
- (2022-10-13) Khalfani Wadlington: It did everything that it said it would do
- (2022-08-31) D Radič: The JavaScript injection worked but could not inject CSS.
- (2022-08-31) D Radič: The JavaScript injection worked but could not inject CSS.
- (2022-07-15) Brian Nydegger: Nice tool, thanks
- (2022-07-15) Brian Nydegger: Nice tool, thanks
- (2022-02-08) KaRaYeL HAXBALL: Failed to save your script, it's usually because your script is too large to store in storage.sync. Please reduce your script size and try again! We know this problem and try to fix it, please follow this issue if you want.
- (2022-02-08) KaRaYeL HAXBALL: Failed to save your script, it's usually because your script is too large to store in storage.sync. Please reduce your script size and try again! We know this problem and try to fix it, please follow this issue if you want.
- (2022-02-06) Suraj Chourasia: It's really that one outstanding extension which I was finding on google... Good work team👍
- (2022-02-06) Suraj Chourasia: It's really that one outstanding extension which I was finding on google... Good work team👍
- (2022-02-05) Donatas Činka: This plugin not perfect, but it does its job. Many similar plugins i tried and only this one works.
- (2022-02-05) Donatas Činka: This plugin not perfect, but it does its job. Many similar plugins i tried and only this one works.
- (2022-02-01) Edward Forshaw: Really useful tool. I'm only using it on one website, to vary zoom levels on different pages on the same host.
- (2022-02-01) Edward Forshaw: Really useful tool. I'm only using it on one website, to vary zoom levels on different pages on the same host.
- (2022-01-28) P YC: 적용 잘되고, 직접 작성하는 자바라 가능성이 무한해요. 저는 성인광고를 지우거나 하는 용도로 써요!
- (2022-01-28) Việt Đậu Minh: Cho đến thời điểm hiện tại thì extension khá tốt và chưa gặp vấn đề gì cả. Khá hài lòng!
- (2021-10-25) Vlad Frank: not working
- (2021-10-25) Vlad Frank: not working
- (2021-10-13) Quakduck: Hi, I really like your platform but platform but in "All Host & Patterns" list, please add the ability to toggle on/off actions from running when you open a URL so can test and save your work. Also please add the ability to put groups of URL-actions in folders, and to name actions and folders.
- (2021-10-13) Quakduck: Hi, I really like your platform but platform but in "All Host & Patterns" list, please add the ability to toggle on/off actions from running when you open a URL so can test and save your work. Also please add the ability to put groups of URL-actions in folders, and to name actions and folders.
- (2021-08-24) Sunder Rawat: work perfectly for custom javascripts
- (2021-08-24) Sunder Rawat: work perfectly for custom javascripts
- (2021-08-24) tosl scrubber: After figuring out the convoluted instructions, clicking save does nothing... NOTHING!. Another failed attempt at saving Youtube subs.