Examine source code of Jumpforce

{
  "manifest_version": 3,
  "name": "Jumpforce",
  "author": "Lukas Kalabis",
  "description": "The fastest way to move through Salesforce",
  "version": "0.23",
  "action": {
    "default_icon": {
      "16": "images/icon-16.png",
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "./background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "developer-jumpforce.kalabis.lukas@gmail.com",
      "strict_min_version": "112.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "style.css",
        "images/icon-16.png",
        "images/icon-32.png",
        "images/icon-48.png",
        "images/icon-128.png"
      ],
      "matches": [
        "https://*.salesforce.com/*",
        "https://*.salesforce-setup.com/*",
        "https://*.force.com/*",
        "https://*.visualforce.com/*",
        "https://*.lightning.force.com/*",
        "https://*.salesforce.mil/*",
        "https://*.force.mil/*"
      ]
    }
  ],
  "commands": {
    "toggle-jumpforce": {
      "suggested_key": {
        "default": "Ctrl+K",
        "mac": "Command+K"
      },
      "description": "Open Jumpforce"
    }
  },
  "host_permissions": [
    "https://*.salesforce.com/*",
    "https://*.salesforce-setup.com/*",
    "https://*.force.com/*",
    "https://*.visualforce.com/*",
    "https://*.lightning.force.com/*",
    "https://*.salesforce.mil/*",
    "https://*.force.mil/*"
  ],
  "permissions": [
    "scripting",
    "tabs"
  ]
}