This post could be called 'The Trouble with Tribbles'.....except I don't own any Tribbles, and the problem should more correctly be called 'The Trouble with PHP (when you don't understand it!)'.

I've had all sorts of problems getting the image galleries to work as I wanted, and I have expended much effort (and some money) trying to come up with a solution I liked....and I failed. Having said that, I've learnt something along the way about configuring PHP on a web server (specifically ImageMagick & PHP GD), and after much searching found a PHP script that does exactly what I want - SFPG (Single File PHP Gallery, https://sye.dk/sfpg/). Free for personal use, it really is an impressive piece of scripting.

I'm still tweaking the configuration, but I can now continue photographing my collection and adding to the galleries.