Overview
Run custom JavaScript and CSS on any site, automatically.
JCPatch lets you customize any website with your own JavaScript and CSS. Write your code in the built-in sidebar editor, choose where it should run, and it applies automatically every time you visit. Target a single page, a whole domain, or anything in between. Add /* to the end of a URL to match every page beneath it, for example example.com/blog/*. Your scripts and styles are stored locally on your device. JCPatch does not collect or transmit any data. Only run code you wrote or trust.
0 out of 5No ratings
Details
- Version1.1.0
- UpdatedOctober 1, 2026
- Size698KiB
- LanguagesEnglish
- DeveloperWebsite
Email
contact@bjornv.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes