The Content-Disposition header can be used to name a downloaded file
The Content-Disposition header can be used to tell a browser the filename of an HTTP response. It’s used for “Save As” or when downloading the file.
For example, you might access a URL of the form:
/files/0645c33f-0be6-44e1-8059-228ec9594867.pdf
If you include a Content-Disposition header of the form:
filename*=utf-8''original_filename.pdf
the browser will download this filename as original_filename.pdf.
Read more:
- MDN docs for Content-Disposition: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition
- Encoding a filename as UTF-8: https://stackoverflow.com/a/49481671/1558022