Examine source code of LinkedIn Text Formatter

{
  "manifest_version": 2,
  "name": "LinkedIn Text Formatter",
  "version": "1.0.1",
  "description": "Add floating toolbar to LinkedIn and any website for bold, italic, bold-italic, underline, and more text styles.",
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-text-formatter@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite",
    "clipboardRead",
    "*://*.linkedin.com/*"
  ],
  "optional_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "floating-toolbar.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "LinkedIn Text Formatter - Floating Toolbar",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "pages/help.html",
    "floating-toolbar.js",
    "styles.css",
    "browser-polyfill.js"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ],
    "persistent": false
  }
}