Inject Code

Inject Code

Inject your own code into any webpage

Inject Code promo image
What is Inject Code?

"Inject Code" is a useful Chrome extension that gives users the power to modify any webpage by injecting custom Javascript, JSX, or CSS snippets. This tool not only allows users to input their own code or link to an external library, but it also provides features like URL-specific filtering and auto-run capabilities. The plug-in comes with an easy-to-use interface, making webpage customization simpler than ever before. Enhance your browsing experience with Inject Code.

Users: 938 ▲ 13
Rating: 4.90 (10)
Version: (Last updated: 2023-12-03)
Creation date: 2018-12-18
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
  • activeTab
  • storage
  • clipboardWrite
Size: 4.91M
Email: Click to see
Stats date:

Other platforms

Not available on Firefox
Not available on Edge

Write JS/JSX/CSS snippets that can be executed by click of a button.


  • Custom code or link to an external library
  • Filter on specific URL's
  • Auto run
  • Filter auto run on specific URL's
  • Simple interface
  • Write/Update in separate tab while testing on web page
  • Toggle horizontal/vertical split view in edit mode
  • Toggle full screen in edit mode
  • Choose whether to run in all frames
User reviews
The best tool for script injection I've found so far. The button concept on the browser plugin allows me to easily simulate website behaviour, e.g. form submission, registration, etc. by entering the required JS code behind that button. As the list of scripts can get quite long, hereby a suggestion for enhancement of the UI: - Add the capability to sort the columns (Name, Type, Description, etc.) ascendlingly or descendingly . Sorting based upon the "Name" column would already be sufficient for me. - Add a search field, e.g. to search through a long list of scripts, based upon the name, description, .. Searching based upon the "Name" column would already be sufficient for me. - Nice-to-have: capabilitiy to add one or more "tags" per script, which can be used for filtering purpose. Filtering based upon "tags" eliminates the need for a "folder" concept. ****************** EDIT 2023-11-27: - I've noticed the sorting feature was added on the columns. Thanks. - I've noticed a search field on the right-top of the UI, but don't see that working yet when entering a search term. ****************** Cheers
by Bart Goormans Bart Goormans, 2023-11-17

Nailed it... Gotta say that I need an injector that just works and this one goes above and beyond so far. It is very well written. We will see how it handles errors though.
by Jay Grasmick Jay Grasmick, 2023-11-12

I'm going with a repeat and one-word tweak of Stagfoo's (Jan 7, 2022) statement... This is the best one of these kind of extension hands down, keep up the great work! Couple of maybe to do's: (1) for at least JS coding, add radio buttons for user to on/off "visual-only auto line numbering" (i.e. exclude line numbers as to the current JSON copy icon); maybe to save screen real estate, move "Code Source" radio buttons up and to right of "Auto Run" and that leaves to right of "Type" for Line Numbering radios. (2) max grow out left-to-right width size of Code window; no, very, very little, white on L/R side of code window; I see and use often that it's height is adjustable. (3) It seems back; please address the console.log('injected ' + name); Thank you again for an outstanding extension.
by B R B R, 2023-11-06
View all user reviews
Risk impact

Inject Code may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.

Risk likelihood

Inject Code has earned a good reputation and can be trusted.

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