Personalize your static site using the HTTP referer header

This is a static page served from Netlify's CDN.

Using Netlify Edge Functions, we can intercept a request to this page, check the value of the HTTP referer header, and modify the response of the HTML before it's returned to the browser. No client-side JavaScript required.

Click here to see the referer message.

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Testing in development

1. Use the Netlify CLI to run this site locally
2. Make sure the referer detection is set to http://localhost:8888/ and click here.
3. To remove the HTTP referer header and banner in development, navigate to http://localhost:8888/ without clicking on the link above.