diff --git a/README.md b/README.md
index 980a10a..8d34c5f 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,18 @@ docker run -it --rm -p 8080:8080 -v $PWD/data:/app/data w33ble/youtube-dl-web
 
 Then hit `http://localhost:8080`, passing in a `url` and optionally a `format` query parameter for where to download from.
 
+### Automatic cleanup
+
+By default, this image will both send the download in the web response as well as save it to disk. This is handy if you're saving those downloads via a volume.
+
+If you don't want to keep the downloads around, you can use the `REMOVE_DOWNLOAD` environment to tell the server to clean up the download after sending it in the web request. Setting the value to `1` or `true` is all it takes:
+
+```sh
+docker run -it --rm -p 8080:8080 --env REMOVE_DOWNLOAD=1 w33ble/youtube-dl-web
+```
+
+Running it like this, the result from youtube-dl will only be useful from the web response. The file is cleaned up after sending so using the shared volume doesn't make sense.
+
 ## Deploy to Docker Hub
 
 ```sh