Examine source code of MindSnap

{
  "icons": {
    "16": "icon16.plasmo.e7bcd3ac.png",
    "32": "icon32.plasmo.ce39377b.png",
    "48": "icon48.plasmo.3c17e113.png",
    "64": "icon64.plasmo.df317abe.png",
    "128": "icon128.plasmo.6a4310c5.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_icon": {
      "16": "icon16.plasmo.e7bcd3ac.png",
      "32": "icon32.plasmo.ce39377b.png",
      "48": "icon48.plasmo.3c17e113.png",
      "64": "icon64.plasmo.df317abe.png",
      "128": "icon128.plasmo.6a4310c5.png"
    },
    "default_popup": "popup.html"
  },
  "version": "1.0.9",
  "author": "nnthanh01061999@gmail.com",
  "name": "MindSnap",
  "description": "__MSG_extensionDescription__",
  "background": {
    "scripts": [
      "static/background/index.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "sidePanel",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "plasmo.f96bfad6.js"
      ],
      "css": []
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "tracking-selected.e03b466c.js"
      ],
      "all_frames": true,
      "css": [
        "tracking-selected.f7e19ede.css"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "insert-content.5eca5776.js"
      ],
      "all_frames": true,
      "css": [
        "tracking-selected.f7e19ede.css"
      ]
    }
  ],
  "default_locale": "en",
  "web_accessible_resources": [
    "tracking-selected.3037e353.css",
    "tracking-selected.aa0cf065.css",
    "tracking-selected.3f889459.css",
    "tracking-selected.9126482f.png",
    "tabs/welcome.ba0e9418.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{51f4fb90-b57c-4fda-90b1-eb634dbf78ce}"
    }
  }
}