Examine source code of LinkedIn Text Formatter

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "description": "__MSG_shortDesc__",
  "version": "1.0.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "default_locale": "en",
  "permissions": [
    "sidePanel",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "default_title": "Linkedin Text Formatter"
  },
  "browser_action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{800324e4-c6d8-4d22-86ea-758f41430054}"
    }
  }
}