Examine source code of Wplace_Locator

{
  "manifest_version": 2,
  "name": "Wplace_Locator",
  "version": "2.0",
  "description": "Floating Wplace locator: share current pixel coords and jump to shared coords",
  "permissions": [
    "storage",
    "clipboardWrite",
    "notifications",
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "https://backend.wplace.live/*",
    "https://wplace.live/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_title": "Wplace_Locator"
  },
  "content_scripts": [
    {
      "matches": [
        "https://wplace.live/*"
      ],
      "js": [
        "content_boot.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://wplace.live/*"
      ],
      "js": [
        "content_ui.js"
      ],
      "css": [
        "content_ui.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon48.png"
  },
  "web_accessible_resources": [
    "wplace_theme_inject.js",
    "icons/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "wplace-locator@example.com",
      "strict_min_version": "112.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}