The effect is Fujifilm Manager available at https://git.nakarmamana.ch/alfanick/fujifilm-manager (the Show HN is just a demo). It's a collection of bash scripts generating highly optimised static HTML/CSS/JS to display virtual "film rolls" made with Fujifilm X-half camera that I sometimes use (think of it as a digital version of infinite amount of disposable analog cameras). Initially it was just a personal project, as I am sitting a bit bored in a clinic, but I am happy to share.
I am a Linux, optimization and UX freak. So I wanted to see how much can be done with ChatGPT from an iPad from a hospital bed. I practically did not write a single line a code, but I did proper engineering - ChatGPT was basically my intern doing coding for me, with tens (hundreds?) of iterations.
The effect is: - a static webpage for previewing "film" rolls, - that uses progressive and lazy loading of highly optimised pictures (with heavy caching too), - with UI/UX optimised for mobile devices like iPhone/iPad, - that can be used to share memories with friends and family, - but also cat be used to improve the photographic skills with the critic mode (try "a").
More functionality is explained in the readme of the repository. I might be slow to respond, it is getting late here, but I am happy to reply when I am around.