Examine source code of DeleteBin

{
  "name": "DeleteBin",
  "description": "__MSG_extdesc__",
  "manifest_version": 2,
  "version": "0.0.4",
  "author": "DeleteBin and its band of merry misfits",
  "homepage_url": "https://deletebin.org",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "18": "icons/icon-18.png",
      "19": "icons/icon-19.png",
      "32": "icons/icon-32.png",
      "36": "icons/icon-36.png",
      "38": "icons/icon-38.png",
      "64": "icons/icon-64.png"
    },
    "default_title": "DeleteBin",
    "default_popup": "encrypt.html?remember=1"
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "default_locale": "en",
  "options_ui": {
    "page": "settings.html",
    "browser_style": false,
    "open_in_tab": true
  },
  "commands": {
    "_execute_browser_action": {
      "description": "Load DeleteBin",
      "suggested_key": {
        "default": "Alt+Shift+L",
        "mac": "MacCtrl+Shift+L"
      }
    }
  },
  "permissions": [
    "contextMenus",
    "storage",
    "clipboardWrite",
    "https://deletebin.org/*"
  ]
}