Force a FULL refresh on a app uploaded to a website

I'm developing a lot of small apps used on a movie set. They are mainly quick emails, messages, photo viewing, or new sites. I often need to make minor updates to text and graphics, and usually reupload them to the same online path.

The problem with that is that when the page loads, the cache is still old, and the browser randomly refreshes items. So it could update some of the text, but not all the graphics. Even doing a new incognito window doesn't always work. The strange thing is that it doesn't even always work to delete all cookies and cache. The only sure thing is that I create a new folder for each upload and version up, so that it would be domain.com/app/sc101_v1 and then domain.com/app/sc101_v2, etc.

It feels like it wasn't always this hard to get this working. This might have something to do with the offline checkbox in the export settings?

Is there another secret approach I can try besides the previously mentioned stuff, F5, and Ctrl+F5?

If an incognito window, or clearing all cache locally, doesn't update it, then it sounds like it's being cached on the server side. You probably want to check your server caching configuration (and CDN caching configuration if you use one). For example if your server is behind a CDN that does server-side caching of certain types of resources, like images, for 24 hours, then nothing you do on the client will be able to update that cache.

If all else fails, publishing your project to a different URL as you have been doing is the ultimate cache-busting approach.