Hacker News Reader

Do iOS apps still use bitmap graphics?

In many cases yes, but svg support has been available in xcode since ver. 12 and before that pdf had been available. As a consultant I haven't worked on a project yet where vector assets has been chosen over bitmap

But does Xcode convert PDF and SVG to various PNG assets?

https://bjango.com/articles/svgassetcatalogs/

It's my understanding, as a designer, that it was auto-generating 2x and 3x PNGs as from your vector assets, and that's what actually got bundled in the final app—and that PNG compression was not good compared to what I could get by going through ImageOptim.

I would be quite happy to be wrong about that. It would save me a lot of time.

Reply on news.ycombinator.com