Where can I get a set of files with different extensions?

Question

Software testing

I have a Windows-based program to copy from directory A to directory B. It needs to be checked on the maximum possible list of file types - you need to check if the software will crash with an error depending on the file type. Where can I download an archive with a ready-made array of blank files (carrying nothing necessary, with a minimum weight)?

Answer 1

Asked a similar question, files were needed examples of different extensions.
I found such a site https://www.online-convert.com/ru/file-type
Let not everything be an archive at once, but you can select the necessary extensions and download an example file for each.