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Security headers › Cross-Origin-Resource-Policy

How to add the Cross-Origin-Resource-Policy header in Vercel

CORP lets you say which origins may load your resources, such as images and scripts.

Vercel configuration (vercel.json)

{
  "headers": [
    {
      "source": "/(.*)",
      "headers": [
        {
          "key": "Cross-Origin-Resource-Policy",
          "value": "same-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

Use same-site or cross-origin for assets that other sites or your CDN subdomains legitimately load.

Verify it works

curl -sI https://your-site.com | grep -i cross-origin-resource-policy

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

Scan your site free

Other headers in Vercel