Custom Code Injector

Run custom javascript and css in a webpage with ease

Custom Code Injector - Run custom javascript and css in a webpage

Custom Code Injector is a Chrome extension that allows you to inject custom javascript and css into webpages. With an easy-to-use interface, you can add your own code or import 3rd party libraries, manage rules, and see your changes instantly. It provides a convenient way to customize the behavior and appearance of webpages.
Install from Chrome Web Store

Extension stats

Manifest V2
Users: 344
7
Rating: 4.75
(4)
Version: 1.0.0 (Last updated: 2023-06-21)
Creation date: 2021-09-11
Permissions:
  • storage
  • unlimitedStorage
  • <all_urls>
  • tabs
  • webRequest
  • webRequestBlocking
Size: 211.97K
Full description: See detailed description

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge

User reviews

I want to thank you. I had to get the code from the developer tool every time to apply the style to the localStorage because the business screen wasn't displayed for what I've already seen while I was doing business, but since I learned about this program, my productivity has changed dramatically. Thank you.
by 조태준, 2025-02-18

How to use URL masks? Like somesite.com/page1* = somesite.com/page11, somesite.com/page12, somesite.com/page111...
by Adwise Creative, 2024-05-05

I'm missing just regular expressions (or at least wildcards) for domains.
by Tomáš Hudec, 2022-05-26
View all user reviews

Extension safety

Risk impact

Custom Code Injector requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Custom Code Injector. Use it at your own risk.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
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