On creating image thumbnails / previews: > My recommendation is to use a combination of cropping and scaling, resulting in a technique I call relevance-enhance

On creating image thumbnails / previews: > My recommendation is to use a combination of cropping and scaling, resulting in a technique I call relevance-enhanced image reduction. (There's an image in the article to demonstrate this since it's a little hard to understand from the textual description.) That is _brilliant_. I had a lightbulb moment there: that is undoubtably the best way I have ever seen to show a small preview of an image. I then looked at the author name. Jakob Nielsen -- and this page is on the Nielsen Norman group website. For those who've never come across them before, they are extraordinarily skilled interaction and interface designers, and I really wish more products today were designed with their principles in mind. If you ever think to yourself 'computers used to be easier to use' or 'macOS or Windows 10's UI is wrong, but I can't say how' then the likely problem is loss of design principles that these folk can describe.