Examine source code of SocialPulse

{
  "manifest_version": 2,
  "name": "SocialPulse",
  "version": "1.0",
  "description": "Analyze the potential reach and impact of social media posts before publishing",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "contextMenus"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "SocialPulse",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*",
        "*://*.twitter.com/*",
        "*://*.linkedin.com/*",
        "*://*.instagram.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73db6ce9-ae29-457e-922d-72b7e859efd6}"
    }
  }
}