supabase/apps/docs/content/guides/functions/compression.mdx

---
id: 'functions-compression'
title: 'Handling Compressed Requests'
description: 'Handling Gzip compressed requests.'
subtitle: 'Handling Gzip compressed requests.'
---

To decompress Gzip bodies, you can use `gunzipSync` from the `node:zlib` API to decompress and then read the body.

```ts
import { gunzipSync } from 'node:zlib'

Deno.serve(async (req) => {
  try {
    // Check if the request body is gzip compressed
    const contentEncoding = req.headers.get('content-encoding')
    if (contentEncoding !== 'gzip') {
      return new Response('Request body is not gzip compressed', {
        status: 400,
      })
    }

    // Read the compressed body
    const compressedBody = await req.arrayBuffer()

    // Decompress the body
    const decompressedBody = gunzipSync(new Uint8Array(compressedBody))

    // Convert the decompressed body to a string
    const decompressedString = new TextDecoder().decode(decompressedBody)
    const data = JSON.parse(decompressedString)

    // Process the decompressed body as needed
    console.log(`Received: ${JSON.stringify(data)}`)

    return new Response('ok', {
      headers: { 'Content-Type': 'text/plain' },
    })
  } catch (error) {
    console.error('Error:', error)
    return new Response('Error processing request', { status: 500 })
  }
})
```

<Admonition type="caution">

Edge functions have a runtime memory limit of 150MB. Overly large compressed payloads may result in an out-of-memory error.

</Admonition>