Examine source code of SuperMemo Connector

{
  "name": "SuperMemo Connector",
  "description": "Import web content in your SuperMemo collection.",
  "author": "Alexis Incogito",
  "version": "0.1.0",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "contextMenus",
    "nativeMessaging"
  ],
  "background": {
    "persistent": false,
    "scripts": [
      "consts.js",
      "config.js",
      "global.js",
      "background.nativeMessaging.messages.js",
      "background.nativeMessaging.js",
      "background.contextMenus.js",
      "background.messages.js",
      "background.js"
    ]
  },
  "homepage_url": "https://github.com/supermemo/",
  "icons": {
    "16": "data/icons/robot-16.png",
    "24": "data/icons/robot-24.png",
    "32": "data/icons/robot-32.png",
    "48": "data/icons/robot-48.png",
    "64": "data/icons/robot-64.png",
    "128": "data/icons/robot-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "data/icons/robot-16.png",
      "24": "data/icons/robot-24.png",
      "32": "data/icons/robot-32.png",
      "48": "data/icons/robot-48.png",
      "64": "data/icons/robot-64.png",
      "128": "data/icons/robot-128.png"
    },
    "default_title": "SuperMemo Connector (disconnected)"
  }
}