Inject Code

Inject Code

Inject your own code into any webpage

What is Inject Code?
"Inject Code" is a Chrome extension that enables users to inject their own JavaScript or CSS snippets into webpages. It offers features such as script filtering by URL, auto-execution, a user-friendly interface, and code editing in a separate tab. This tool is perfect for developers who want to test or run their code within the browser context, providing customization with horizontal/vertical view toggles and fullscreen mode in the editor. It even supports executing code in all frames of a page.
Merlin
Stats
Users: 1,000+
Rating: 4.89 (9)
Version: 1.0.4.8 (Last updated: 2024-03-09)
Creation date: 2018-12-18
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
  • storage
  • clipboardWrite
Size: 4.93M
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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Merlin
Summary

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

Features:

  • 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
Overall good yet doesnt work on bookmarklets and certain types of code. This, doesn't work. Why? javascript:(function()%7Bsign%3Dwindow.prompt(%22Welcome%20to%20the%20IRH%20developed%20by%20KJ.%20If%20you%20were%20given%20a%20password%2C%20please%20enter%20it%20below.%22)%2C%22keyoppLMS%22!%3Dsign%26%26alert(%22Password%20denied.%20Reenter%20your%20a%20password%22)%2C%22keyoppLMS%22%3D%3Dsign%26%26((()%3D%3E%7Bconst%20t%3DJSON.stringify%3BJSON.stringify%3Dfunction(e)%7Breturn%20e.instructionLessonOutcome%26%26(e.instructionLessonOutcome.score%3D100)%2Ct.apply(this%2Carguments)%7D%7D)()%2Calert(%22Password%20accepted.%20iReady%20h%40cks%20imported.%20Use%20this%20bookmarklet%20again%20when%20you%20change%20lesson%2Fstart%20a%20quiz.%20Instructions%20will%20appear%20when%20you%20hit%20'OK'.%22)%2Calert(%22When%20using%20this%20exploit%2C%20on%20a%20quiz%20you%20must%20stay%20for%20atleast%202%20minutes%20and%20have%20answered%203%2F4%20questions.%20If%20this%20isn't%20done%2C%20AntiCheat%20will%20immediately%20ban%20you.%20If%20you%20just%20got%20an%20100%20DO%20NOT%20Exit%20off%20of%20iReady%20immediately.%20Go%20to%20my%20path%20and%20explore%20for%201-2%20minutes%20before%20signing%20off.%20KJ%20is%20not%20responsible%20for%20any%20bans.%22))%7D)()
by z z, 2024-03-30

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
View all user reviews
Safety
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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Screenshots
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