Could I make a Google Chrome extension for chrome pages (downloads, extensions etc)?

Question

I\'d like to make a very simple extensions that slightly alters how the Downloads page looks. Changing the History page might be interesting too, but that\'s for later.

Answer 1

According to this documentation, chrome:// URLs are an invalid scheme so they won't be matched:

A match pattern is essentially a URL that begins with a permitted scheme (http, https, file, or ftp), and that can contain '*' characters.

I would look into using override pages instead.

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As requested, here's my extension that can at least load when chrome://downloads is loaded, although as I said, I don't think you can modify the page even if you know that's the page you're viewing.

manifest.json

{
    "name": "Test",
    "version": "0.0.1",
    "background_page": "background.html",
    "permissions": [
        "tabs"
    ]
}

background.html