---
title: Filter cookies or other structured headers
summary: Rewrite headers to keep only keys that you want to allow, similar to `querystring.filter_except` but for headers rather than querystrings.
url: https://www.fastly.com/documentation/solutions/examples/filter-cookies-or-other-structured-headers
---

Rewrite headers to keep only keys that you want to allow, similar to `querystring.filter_except` but for headers rather than querystrings.

## VCL

[Try it in Fastly Fiddle](https://fiddle.fastly.dev/1dde2a90)

## Compute

### Rust

[Try it in Fastly Fiddle](https://fiddle.fastly.dev/863ecb35)

### Javascript

[Try it in Fastly Fiddle](https://fiddle.fastly.dev/bf860b4a)

### Go

[Try it in Fastly Fiddle](https://fiddle.fastly.dev/796c66b4)