Examine source code of Keep Web Clipper: Save Anything to Markdown

{
  "manifest_version": 3,
  "name": "Keep Web Clipper: Save Anything to Markdown",
  "version": "0.2.6",
  "description": "Save articles, links, videos, PDFs, images, and useful web content as clean Markdown. Add notes, tags, and highlights.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Keep Web Clipper",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://keep.md/*",
        "https://app.keep.md/*"
      ],
      "js": [
        "connect.js"
      ]
    },
    {
      "matches": [
        "https://x.com/*",
        "https://twitter.com/*"
      ],
      "js": [
        "x-bookmark.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "native-save.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "bookmarks",
    "contextMenus",
    "scripting"
  ],
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "native-save-bridge.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "commands": {
    "keep-current-tab": {
      "suggested_key": {
        "default": "Ctrl+Shift+K",
        "mac": "Command+Shift+K"
      },
      "description": "Save current tab to Keep"
    },
    "keep-all-tabs": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+L"
      },
      "description": "Save all tabs to Keep"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "bookmarksInfo",
          "websiteActivity",
          "websiteContent"
        ]
      },
      "id": "extension@keep.md"
    }
  }
}