Examine source code of browser markdown

{
  "manifest_version": 3,
  "name": "Markdown Viewer",
  "description": "Fast, safe markdown rendering for local and remote .md files.",
  "version": "0.1.0",
  "permissions": [
    "storage",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "*://*/*.md*",
    "*://*/*.markdown*",
    "*://*/*.mkd*"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "strip-csp",
        "enabled": true,
        "path": "rules.firefox.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*",
        "chunks/*",
        "mermaid-runner.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "browser-markdown@sutharjay",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Markdown Viewer Settings",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*.markdown*",
        "*://*/*.md*",
        "*://*/*.mkd*",
        "file:///*.markdown*",
        "file:///*.md*",
        "file:///*.mkd*"
      ],
      "exclude_matches": [
        "*://github.com/*",
        "*://www.github.com/*"
      ],
      "run_at": "document_idle",
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}