I was using Calibre the dumb way and I was telling you all to use it the dumb way too, into the shame bucket with me, check the updated PRS-505 Calibre guide.

See ebook files are full of too-big images that slow down or crash old ereaders, and I was having y'all use some kinda wonky “Resize Images” plugin and editing each book individually while going “Jesus, why doesn't Calibre do this with one click across multiple books the same way it does for manga?” and it turns out it does, or rather it should, but the option had the wrong explanatory text for years and years so I just assumed it didn't work lol.

Anyway long story short, use “profile” under “Shrink images larger than:” and then you can just convert epubs to better epubs.

I'll probably put up some more stuff about this ereader soon 'cause I've done loads of battery swaps and a couple of screen swaps and they want documented.