90% comes from screenscraper.fr. It's very slow even for registered users. And you'd need a scraper or write your own(what I've done). At first, I used and hacked the code from skyscraper.
Most screenshots can be found here : https://github.com/libretro-thumbnails/libretro-thumbnails
They are already in 8-bit colormap by the way.
You may need to rename them like in the xml. Probably resize them too. Some platforms required a montage to respect aspect and max dimensions: resize snap and center on a transparent 256*224 image.
For carts/disks raw images, it's another story. Except screenscraper I don't know any website that centralize most of them.
A lot of the carts also comes from various sources: mobygames, gamebase, worldofdragon.org etc. Mainly for the less known platforms. But I've also deleted most of them...
I didn't know adding palleted png support in pngu was trivial. That was my first idea to compress. But already too much work for this shit(all scripts+Wiiflow code).
In short, the easiest way is just to take the snap pack here, compress and share. Easy.
Most screenshots can be found here : https://github.com/libretro-thumbnails/libretro-thumbnails
They are already in 8-bit colormap by the way.
You may need to rename them like in the xml. Probably resize them too. Some platforms required a montage to respect aspect and max dimensions: resize snap and center on a transparent 256*224 image.
For carts/disks raw images, it's another story. Except screenscraper I don't know any website that centralize most of them.
A lot of the carts also comes from various sources: mobygames, gamebase, worldofdragon.org etc. Mainly for the less known platforms. But I've also deleted most of them...
I didn't know adding palleted png support in pngu was trivial. That was my first idea to compress. But already too much work for this shit(all scripts+Wiiflow code).
In short, the easiest way is just to take the snap pack here, compress and share. Easy.