Examine source code of CleanReddit

{
  "manifest_version": 3,
  "name": "CleanReddit",
  "version": "1.3",
  "description": "Regain control of your feed. Block all bullshit",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://www.reddit.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.reddit.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "index.html",
    "default_icon": "icon-48.png"
  },
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "messaimahdi1234@gmail.com",
      "strict_min_version": "68.0"
    }
  }
}