Examine source code of MDflow Web Clipper

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "MDflow Web Clipper",
  "homepage_url": "https://mdflow.cz/",
  "version": "1.7.1",
  "description": "Save and highlight web pages to your MDflow workspace, in a private and durable Markdown format you can access offline.",
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "contextMenus",
    "storage",
    "scripting",
    "webRequest",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "<all_urls>",
    "http://*/*",
    "https://*/*"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "browser-polyfill.min.js",
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "browser-polyfill.min.js",
        "style.css",
        "side-panel.html",
        "flatten-shadow-dom.js",
        "highlighter.css"
      ],
      "extension_ids": [
        "*"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+O",
        "mac": "Alt+Shift+O"
      },
      "description": "__MSG_commandOpenClipper__"
    },
    "toggle_highlighter": {
      "suggested_key": {
        "default": "Alt+Shift+H",
        "mac": "Alt+Shift+H"
      },
      "description": "__MSG_commandToggleHighlighter__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clipper@mdflow.cz",
      "strict_min_version": "113.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "113.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}