> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/welcome/content-delivery-network/domain-management/advanced-settings.md).

# Advanced Settings

Click one domain name in the domain list and click **Advanced**.

This contains CDN advanced settings, mainly to improve performances and user experiences.

<div align="left"><figure><img src="/files/BtckVOmHCg3dKG5vTJ24" alt=""><figcaption></figcaption></figure></div>

<table><thead><tr><th width="153">Parameter</th><th>Description</th></tr></thead><tbody><tr><td>Gzip Compression</td><td><p>After you enable the Gzip compression feature, Zenlayer CDN points of presence (POPs) use the Gzip compression to compress resources before the resources are returned to clients.</p><p>The Gzip compression feature reduces file sizes, accelerates file distribution, and reduces bandwidth consumption.</p></td></tr><tr><td>Client Download Speed Limit</td><td><p>Enable the download speed limit to limit the bandwidth of each client.</p><p>It is recommended to enable it in the large file download scenario, which can effectively reduce the overall burst bandwidth.</p></td></tr><tr><td>Slice</td><td><p>When the slice module is enabled, CDN server will split large request into multiple smaller requests to fetch content from the origin.</p><p>It is recommended to activate it for domains serving large files.</p></td></tr><tr><td>Request Header</td><td>This configuration will modify the request header information displayed when the CDN returns to the origin site, which can be used as a security check for the origin site.</td></tr><tr><td>Response Header</td><td>This configuration will modify the response header information returned by the CDN to the client for security detection of the client.</td></tr></tbody></table>