# Cache Invalidation

Cache invalidation is a function that helps you to remove image from the CDN.

You can delete images using either

* URL of the original image
* Path to the image that starts with the [Image Source](https://help.pixboost.com/setup/source-images/http) alias

![](https://1476540046-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lmt8xTtwpk3g-UlZf5Q%2Fuploads%2Fgit-blob-a3c3551bea14da15ee3fa27ca59e51bac43650a2%2Fcache-invalidation-1.png?alt=media)

## Limitations

Invalidation is intended for use in exceptional circumstances, not as part of your normal workflow. Invalidations don't affect cached copies in web browser caches or caches operated by third-party internet service providers.

Invalidations are rate-limited. You can submit at most one invalidation per minute.