> For the complete documentation index, see [llms.txt](https://docs.i3d.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.i3d.net/about_cdn/how_to_prewarm.md).

# CDN actions: How to prewarm

Below you can read how to pre-warm content. You can either choose to pre-warm content though the CDN front end, or using the CDN API.

## Pre-warming using the CDN front end

1. **Log into the CDN control panel**: Open a web browser and navigate to the control panel URL. Enter your login credentials to access the control panel dashboard.
2. **Access Cache Management**: Once you have logged in, select the **Cache** tab.
3. **Specify content for warming**: In the **Warm selected URLs** field, enter the file names or paths of the files you want to preload. Be sure to add each file name or path in a new line.
4. **Confirm and initiate cache warming**: Review your list of files/URLs you entered to confirm what you want to warm. Click **Start warming** to start the process.
5. **Action verification**: Once the warming is complete, you can verify its success by accessing the files/URLs. These files/URLs should now load quicklly from the cache, ensuring an improved user experience.

## Pre-warming using the CDN API

1. **Open API**: Obtain API credentials (such as API keys or tokens). These credentials will authenticate your API requests.
2. **Identify content to pre-warm**: Determine the content that you want to pre-warm. This could be a list of URLs, assets, or resources that you want to ensure are present in the CDN cache.
3. **Construct the API request**: Create an HTTP request to the appropriate API endpoint.
4. **Send an API request**: Use the HTTP method specified in the CDN's [API Swagger documentation](https://api.cdn.i3d.net/docs/index.html). Be sure to include the necessary headers, API credentials, and contact identifiers in the request payload.
5. **Process the API response**: The API call will return a response indicating the status of your request. Check the response for success or error messages.

## Related topics

* [About CDN](/about_cdn.md)
* [How to purge](/about_cdn/how_to_purge.md)


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