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Editorial Team
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Asked: 2026-06-08T03:21:57+00:00

I am trying to make basically an element highlighter chrome extension. Workflow: – click

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I am trying to make basically an element highlighter chrome extension.
Workflow:
– click on browser icon
– click on the page
– hightlight the element clicked

I am having troubles in running content scripts upon browser action using manifest_version:2
When I inspect the popup that appears it says:

Refused to execute inline script because it violates the following
Content Security Policy directive: “script-src ‘self’
chrome-extension-resource:” (popup.html:5).

Which is where the inline script in popup.html is and the script does not work

I have:

manifest.json:

{
   "browser_action": {
      "default_icon": "images/icon.gif",
      "default_popup": "popup.html"
   },
   "manifest_version": 2,
   "description": "MEH!",
   "name": "My First Extension",
   "permissions": [
      "tabs", "http://*/*", "https://*/*"
   ],
   "version": "0.1"
}

popup.html:

<html>
  <head>
  </head>
  <body>
    <script>
      chrome.tabs.executeScript(null,{
        code:"document.body.style.backgroundColor='red'"
      });
    </script>
    <div id='msg' style="width:300px">...</div>
  </body>
</html>

Any help would be very much appreciated

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1 Answer

  1. Editorial Team

    Turns out I could not read the error properly until I saw it in here

    Apparently manifest v2 does not allow you to have inline scripts, so you just need to 

    src="path_to_the_file.js"
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