> For the complete documentation index, see [llms.txt](https://adagio-io.gitbook.io/adagio-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://adagio-io.gitbook.io/adagio-documentation/openrtb-s2s-endpoint/data-compression-gzip.md).

# Data Compression (gzip)

{% hint style="warning" %}
Adagio <mark style="color:orange;">ONLY</mark> supports Compressed JSON (gzip) for bid requests and bid responses.
{% endhint %}

It is <mark style="color:orange;">**mandatory**</mark> to use Compressed JSON to reduce the amount of data exchanged between you and Adagio, as this decreases latency times between servers, and traffic listening costs for all parties involved.

Configure compressed JSON bid requests and enable compressed responses:

{% stepper %}
{% step %}
Compress your HTTP request body with `gzip`
{% endstep %}

{% step %}
Add a <mark style="color:blue;">**`Content-Encoding: gzip`**</mark> HTTP header to indicate that the request is compressed
{% endstep %}

{% step %}
Add an <mark style="color:blue;">**`Accept-Encoding: gzip`**</mark> header to indicate that you can accept a compressed response
{% endstep %}
{% endstepper %}

{% hint style="info" %}
Bid responses include a <mark style="color:blue;">**`Content-Encoding: gzip`**</mark> HTTP header to indicate compression. To distinguish between JSON and Compressed JSON formats, check for this header. If present, **decompress the HTTP body before processing.**
{% endhint %}


---

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