Examine source code of Simple Ping Blocker

{
  "manifest_version": 2,
  "name": "Simple Ping Blocker",
  "version": "1.0.0",
  "description": "Block websites from tracking the links you visit through hyperlink auditing.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "96": "icon96.png",
    "128": "icon128.png"
  }
}