Examine source code of LinkedIn Cleaner

{
  "manifest_version": 2,
  "name": "LinkedIn Cleaner",
  "version": "1.2",
  "description": "Removes Suggested and Promoted posts from LinkedIn.",
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.linkedin.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a6c83d49-c819-43f3-b003-b35781bac0be}"
    }
  }
}