Examine source code of No Fingerprint

{
  "manifest_version": 2,
  "short_name": "no-fingerprint",
  "version": "0.2",
  "name": "No Fingerprint",
  "description": "Block browser fingerprinting attempts.",
  "homepage_url": "https://github.com/Sam0230/No-Fingerprint",
  "icons": {
    "1000": "No Fingerprint.png"
  },
  "browser_action": {
    "default_icon": {
      "1000": "No Fingerprint.png"
    }
  },
  "permissions": [],
  "content_scripts": [
    {
      "all_frames": true,
      "match_about_blank": true,
      "run_at": "document_start",
      "matches": [
        "*://*/*"
      ],
      "js": [
        "no-fingerprint.user.js"
      ]
    }
  ]
}