Examine source code of ctrl-f ULTRA – Find in page, regex, PDFs

{
  "manifest_version": 3,
  "name": "ctrl-f ULTRA – Find in page, regex, PDFs",
  "version": "1.0.5",
  "description": "A browser extension that supercharges your native Ctrl+F with regex, multi-term highlighting, and advanced search capabilities.",
  "browser_specific_settings": {
    "gecko": {
      "id": "ctrlf-ultra@ctrlf-ultra",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/ext_icon16.png",
    "19": "icons/ext_icon19.png",
    "32": "icons/ext_icon32.png",
    "38": "icons/ext_icon38.png",
    "48": "icons/ext_icon48.png",
    "64": "icons/ext_icon64.png",
    "128": "icons/ext_icon128.png",
    "256": "icons/ext_icon256.png"
  },
  "action": {
    "default_title": "ctrl-f ULTRA",
    "default_icon": {
      "16": "icons/ext_icon16.png",
      "32": "icons/ext_icon32.png",
      "48": "icons/ext_icon48.png",
      "64": "icons/ext_icon64.png",
      "128": "icons/ext_icon128.png"
    }
  },
  "commands": {
    "toggle_bar": {
      "suggested_key": {
        "default": "Ctrl+F",
        "mac": "Command+F"
      },
      "description": "Toggle find bar"
    },
    "cycle_next_match": {
      "suggested_key": {
        "default": "Ctrl+G",
        "mac": "Command+G"
      },
      "description": "Next highlight"
    },
    "cycle_prev_match": {
      "suggested_key": {
        "default": "Ctrl+Shift+G",
        "mac": "Command+Shift+G"
      },
      "description": "Previous highlight"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "pdf.worker.min.mjs"
      ],
      "matches": [
        "<all_urls>"
      ],
      "extension_ids": [
        "*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}