When linking to files include the file type and size in the text of the link.
Not as an icon, not as CSS generated content.
https://adrianroselli.com/2019/12/showing-file-types-in-links.html
On the socials, *always* announce if linking to a file.
https://adrianroselli.com/2019/12/showing-file-types-in-links.html
Links to files can be a surprise for users, especially those who cannot use, do not notice, or do not have the status bar to show a link destination. Some users may appreciate knowing a link points to a file, sometimes even a particular file. For links with the download…