Run Javascript
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Run custom Javascript, each time you visit a website

Run custom Javascript, each time you visit a website. This extension is particularly useful to web developers and people who like to tamper with websites they frequent by injecting additional javascript to manipulate the DOM. Add in any javascript you like and it will automatically be executed everytime you visit the website in the future. jQuery 3.3.1 is pre-loaded, so you can use all the $ magic immediately!

4.2 out of 543 ratings

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Papa SmurfMar 26, 2024

Its not working now! what happened new update?

2 out of 2 found this helpful
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Test GmailMar 26, 2024

Tracking request popped up and it stopped working. Maybe it was their blog's tracking request, either way, doesn't work.

2 out of 4 found this helpful
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Artur IwanFeb 27, 2024

I love it this extension. I'm using it to replace some image urls on a website.

3 out of 3 found this helpful


  • Version
  • Updated
    March 26, 2024
  • Offered by
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  • Non-trader
    This 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.


The developer has disclosed that it will not collect or use your data.

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


For help with questions, suggestions, or problems, visit the developer's support site

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