Examine source code of MarkedIn

{
  "manifest_version": 2,
  "name": "MarkedIn",
  "description": "Convert your Markdown content to a Linkedin article ready to be published on One Click.",
  "version": "1.1",
  "permissions": [
    "cookies",
    "*://www.linkedin.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.linkedin.com/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "icons": {
    "64": "images/icon-64.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": "images/icon-64.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{58ca807c-10ac-456a-a248-04b6c0b56842}"
    }
  }
}