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Security headers › Referrer-Policy

How to add the Referrer-Policy header in Vercel

Referrer-Policy controls how much of the current URL is sent in the Referer header when users follow links or load resources.

Vercel configuration (vercel.json)

{
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        {
          "key": "Referrer-Policy",
          "value": "strict-origin-when-cross-origin"
        }
      ]
    }
  ]
}

Add to vercel.json at the project root and redeploy. Next.js projects on Vercel can set headers in next.config instead.

Before you deploy

strict-origin-when-cross-origin is the browser default in modern browsers and a safe choice. Use no-referrer for maximum privacy if analytics do not depend on referrers.

Verify it works

curl -sI https://your-site.com | grep -i referrer-policy

Or run a free Korrali Web scan to check this and every other security header at once.

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Other headers in Vercel