Examine source code of Markdown Diagrams

{
  "name": "Markdown Diagrams",
  "description": "Render PlantUML, Mermaid and others graph/diagrams on webpages.",
  "version": "1.2",
  "manifest_version": 2,
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "settings/index.html"
  },
  "background": {
    "scripts": [
      "js/pako_deflate.js",
      "js/settings.js",
      "js/background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_icon": "images/icon128.png",
    "default_title": "Markdown Diagrams"
  },
  "content_scripts": [
    {
      "js": [
        "js/settings.js",
        "js/sites.js",
        "js/diagrams.js",
        "js/content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*.md",
        "file://*/*.MD",
        "file://*/*.markdown",
        "file://*/*.mdown",
        "file://*/*.mkd",
        "file://*/*.rmd",
        "file://*/*.rst",
        "file://*/*.txt"
      ],
      "run_at": "document_idle"
    }
  ]
}