This is a good tip! I've seen a lot of new websites lately that do conversions for all sorts of proprietary files, so this is yet another cheap option for those who don't own PS. If I may, another option, which works so closely with PS, but you don't have to worry about high subscription costs, is the Affinity suite. Affinity, based in the UK, created Adobe-type products that mimic the aforementioned so well that whether you are coming from Adobe products or are a first-time user, you won't have trouble getting up and running. Another great point to make is that all modules from Affinity are a one-time license payment, meaning that they adhere to a perpetual license system, instead of monthly/yearly subscriptions. Each module is reasonably priced and as for what you get with it, I still have yet to find a file format that Affinity has trouble with. I have a XP-Pen Star G640 drawing pad . and it is working perfectly with photopea for photo editing .
Anyways, thanks again for the tip and if there is interest in Affinity, it is a cheaper alternative with less stumbling blocks.