Custom Site JS

Run your own (per url or domain) custom JavaScript on sites.

Custom Site JS - Customize websites with your own JavaScript

Custom Site JS is a Chrome extension that allows you to add, edit, or delete snippets of custom JavaScript to be automatically run on websites based on specific URLs. It provides an easy way to personalize your browsing experience without any external information sharing.
Install from Chrome Web Store

Extension stats

Manifest V3
Users: 110
4
Rating: 5.00
(1)
Version: 1.0.2 (Last updated: 2024-10-26)
Creation date: 2019-10-28
Permissions:
  • webNavigation
  • storage
  • tabs
  • *://*/*
Size: 96.91K
Full description: See detailed description

Other platforms

Not available on Android
Custom Site JS (v1.0.1)
344 4.57 (7)
Not available on Edge

User reviews

now i can auto expand self text posts on reddit instead of clicking on a bookmarklet. So, i can hide the bookmark toolbar now. Make sure scroll to right in addon textbox to check "Enable on".
by Zedroid, 2024-03-01
View all user reviews

Extension safety

Risk impact

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

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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  • Low ******* ****** ** *** ********* ********
Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Custom Site JS. 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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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Similar extensions

Here are some Chrome extensions that are similar to Custom Site JS: