Sometimes when I upload a new version of a file, it doesn't change to the new version on pages. Sometimes it changes on one device but not another. Anyone know how to fix this?
Topic on Project:Support desk
By emptying your web browser cache.
Is there any way to do it without emptying it every time? For example if my friend views my website, will they have to clear cache to view the latest file version as well?
You could use a web browser with less aggressive caching behavior. This is nothing that MediaWiki can influence. This is behavior of your local web browser that you installed.