Examine source code of WordServe

{
  "manifest_version": 2,
  "name": "WordServe",
  "description": "Fast autosuggestions and completions for any website",
  "version": "0.1.2",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "downloads"
  ],
  "commands": {
    "wordserve-open-settings": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      },
      "description": "Open settings page"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "web_accessible_resources": [
    "data/*.bin",
    "asset-manifest.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wordserve@bastiangx.dev",
      "strict_min_version": "102.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "WordServe",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}