Examine source code of Easy click

{
  "manifest_version": 2,
  "name": "Easy Click",
  "version": "1.2",
  "permissions": [
    "<all_urls>",
    "storage",
    "activeTab",
    "contextMenus"
  ],
  "browser_action": {
    "default_title": "Easy Click",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "test.html",
    "about.html",
    "manual-extension-test.html",
    "firefox-test.html"
  ],
  "applications": {
    "gecko": {
      "id": "easyclick@firefox.extension",
      "strict_min_version": "58.0"
    }
  }
}