Examine source code of Google Keep Notes

{
  "description": "Google Keep Notes brings Google Keep right into your Firefox Sidebar.",
  "homepage_url": "http://barisderin.com",
  "manifest_version": 2,
  "name": "Google Keep Notes",
  "version": "65.0.1resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html",
    "default_title": "Google Keep Notes"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/content_script.js"
      ],
      "css": [
        "style/contentstyle.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "scripts/content_script_st.js"
      ],
      "matches": [
        "*://*.barisderin.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "sidebar_action": {
    "default_title": "Google Keep Notes",
    "default_panel": "sidebar.html",
    "default_icon": "sidebar.png"
  },
  "icons": {
    "48": "images/icon48.png"
  },
  "permissions": [
    "contextualIdentities",
    "cookies",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "contextMenus",
    "downloads",
    "storage",
    "<all_urls>"
  ],
  "commands": {
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Ctrl+Shift+Y"
      }
    }
  },
  "applications": {
    "gecko": {
      "id": "{a94d60a0-8408-4c53-8eec-cb349eb958b8}"
    }
  }
}