How can I set custom headers in Vercel?

How can I set custom headers in Vercel?

You can set custom headers in Vercel by using the vercel.json configuration file. You need to define the headers under the headers key.

Can you show me an example of the vercel.json file?

Sure! Here's a simple example:

{
  "headers": [
    {
      "source": "/*",
      "headers": [
        {
          "key": "X-Custom-Header",
          "value": "MyValue"
        }
      ]
    }
  ]
}

What types of headers can I set?

You can set various types of headers, including security headers like Content-Security-Policy, caching headers, and custom application headers.

Is there a limit to the number of headers I can set?

There isn't a strict limit, but it's best to keep the number of headers reasonable to avoid performance issues.