Examine source code of Text Marker Suite

{
  "manifest_version": 2,
  "name": "Text Marker Suite",
  "version": "1.0",
  "description": "Persistent text highlighting across sessions.",
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon64.png"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c942938d-e533-4794-80fe-74793a32faf0}",
      "strict_min_version": "114.0"
    }
  }
}