Examine source code of Stapler — Offline PDF Tools

{
  "manifest_version": 3,
  "name": "Stapler — Offline PDF Tools",
  "version": "0.2.0",
  "description": "Merge, split, compress, convert, sign, and redact PDFs — entirely offline. Zero uploads, zero limits.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Open Stapler"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [],
  "host_permissions": [],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; connect-src 'self' https://cdn.jsdelivr.net;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stapler-offline-pdf@stapler.app",
      "strict_min_version": "112.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}