> For the complete documentation index, see [llms.txt](https://clients.medianova.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://clients.medianova.com/products/performance-cdn/image-optimization-and-webp/gzip-compression.md).
# Gzip Compression
Compress eligible responses using Gzip to reduce bandwidth usage and improve content delivery performance.
**Gzip Compression** compresses eligible responses before they are delivered to clients. When enabled, Medianova CDN applies Gzip compression to configured content types when the client indicates support for compressed content.
{% hint style="info" %}
You can define which MIME types are eligible for compression by configuring the content type list.
{% endhint %}
Gzip Compression is configured per CDN Resource in the [Medianova Control Panel](https://cloud.medianova.com).
## Configure Gzip Compression
{% stepper %}
{% step %}
### Open Text Optimization
Open your CDN Resource and navigate to **Optimization → Text**.
{% endstep %}
{% step %}
### Enable Gzip Compression
Enable the **Gzip Compression** toggle.
{% endstep %}
{% step %}
### Configure Content Types
Review the configured content types and add or remove MIME types as required.
To add a content type, enter the MIME type in the **Content Type** field and select **+**.
Common text-based content types include:
* `application/javascript`
* `application/json`
* `application/xml`
* `image/svg+xml`
* `text/css`
* `text/html`
* `text/plain`
Avoid adding formats that are already compressed, such as JPEG, PNG, GIF, MP4, ZIP, and PDF, unless required for a specific use case.
{% endstep %}
{% step %}
### Save the Configuration
Select **Save** in the pending changes bar.
Review the pending configuration changes and confirm the update.
{% endstep %}
{% endstepper %}
## Compression Behavior
When Gzip Compression is enabled:
* The CDN applies Gzip compression to configured content types when the client indicates support for compressed content.
* Eligible compressed responses are delivered with the `Content-Encoding: gzip` response header.
* Clients that do not support Gzip receive an uncompressed response.
* Compression is applied during content delivery and does not modify the original content at the origin.
## Content Type Considerations
Gzip is most effective for text-based content such as HTML, CSS, JavaScript, JSON, XML, and SVG.
Formats that already use compression typically receive little or no benefit from additional Gzip compression. These commonly include:
* GIF
* JPEG
* MP4
* PDF
* PNG
* ZIP
Avoid unnecessarily broad content type configurations because they can introduce additional processing without providing meaningful compression benefits.
## Benefits
* Reduces bandwidth consumption.
* Reduces transfer size for compressible content.
* Improves delivery performance for text-based content.
## Important Notes
* Only configured content types are eligible for Gzip compression.
* Compression depends on client support for Gzip encoding.
* Compression efficiency varies according to content type and response size.
* Original files at the origin remain unchanged.
## Related Concepts
* [Compression](/products/performance-cdn/static-content-delivery/advanced-configuration/compression.md)
* [How to Configure Gzip and Brotli](/products/performance-cdn/static-content-delivery/advanced-configuration/compression/how-to-configure-gzip-and-brotli.md)
---
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