In the Commerce plugin, there are several ways to download a PDF of a specific order.
However, the default formatting of the PDF filename isn't very helpful...
Order-14ef9b78dae6893cd2ca75ec047ed9a0.pdf
Is there any way to control the formatting of PDF receipt filenames?
There's currently not a native way to change this format, but it is planned for a future release.
In the meantime as a workaround, you can listen to the onBeforeSaveOrder event and change the order number to whatever format you want. A by-product of that is that the PDF receipt filename should change to your format as well.
