Custom JavaScript for Websites 2

Run custom JavaScript on any website.

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Custom JavaScript for Websites 2 - Enhance Your Browsing Experience

'Custom JavaScript for Websites 2' is a Chrome extension that permits users the flexibility to run their own custom JavaScript on any website. The custom scripts are stored via Chrome's Sync API and are applicable across domain URLs based on the domain or regular expression. The extension features a dedicated tab for code editing and supports built-in libraries and personal external scripts, aiding in website debugging, information extraction, ad blocking and UI customization.

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Extension stats

By: xcv58

Users: 50,000+

Rating: 4.39

(130)

1 new ratings

Version: 3.4.12 (Last updated: 2023-02-20)

Creation date: 2020-04-28

Risk impact: High risk impact

Risk likelihood:

Very low risk likelihood

Manifest version: 2

Permissions:

storage
http://*/
https://*/
tabs

Size: 602.11K

Email: ch*****@xcv58.com

Ranking

# 3,853

Other rankings

#641 in Developer Tools ▼ 2

#4 in javascript keyword 44

#13 in jquery keyword 16

#33 in inject keyword 7 ▼ 2

#51 in website keyword 65 ▲ 3

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Other platforms

Not available on Android

Not available on Firefox

Not available on Edge

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Extension summary

Analyze keywords

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.

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.

Pros

Works great for injecting custom JavaScript into websites
Long-time user favorite, loved by many
Saves time by allowing customization on various websites
Allows easy inclusion of libraries like jQuery

Cons

Doesn't work on every website, especially those with certain security settings
Requires the developer console to be open for some users to function correctly
Concern about future support due to Chrome's manifest updates

Most mentioned

Fantastic for customization and ease of use
Issues with certain websites blocking scripts
Long-time users express sadness over potential removal
Requests for features like automatic script loading on page load

User reviews

Epic!

Byte Afterlife (Byte), 2025-01-18

Ramin Firooz, 2025-01-11

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.

NotAHackusator, 2024-10-31

View all user reviews

Extension safety

Risk impact

Custom JavaScript for Websites 2 requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.