Short journal · Original editorial · Digital things that explain themselves
A download link does not identify the file or its format.
An interface makes a promise through its wording. A useful label tells people what will happen and a useful result tells them what did happen. Test the smallest interaction in plain language before decorating it with confidence.
Write a label that names both the document and the file type.
You can stop after one small attempt. The purpose is to make a particular choice clearer, not to create a new obligation.
Try a question
What would you notice after trying this in one small, real situation?