About size of pieces and quality of images

[Equinox]

Is there any way to increase the quality of the images?, most of them look like JPG and when you increase the number of pieces, it looks like they lose a bit more of quality, (also any way to make them PNG or higher quality?), making them a bit blurry, and also the size of pieces, when it goes for numbers as 200+ pieces they basically make it even harder to distinguish from each other due to their size and quality of image,

[that's my jamnitor]

Yes. Play Jigsaw Puzzle Dreams

[Sparzy]

I do the 800 piece ones all the time and have no trouble, bring them out on the main board and they go to original size.

[stubaz]

Yes there is a way to improve the quality of the puzzles. This isn't for those who don't understand the software side of things though. Plus I assume it would be illegal to modify the file changes required. I'll explain the basics and leave it to you to figure out the legal side of it.
If you can find the photos within the program it's simply a matter of removing the photos, enhancing them by using the latest software (eg: Topaz is an excellent choice) Then simply save the enhanced files back into the SJP folder.
Obviously upgrading the pixel count of a photo also increases the file size and I'm unsure if SJP can work with larger photos. The pixel count can be increased dramatically from the original. The visual effect is equally changed. I've personally taken a photo from hard to distinguish to something perfectly usable as a jigsaw puzzle. The joys of AI. Topaz also does an excellent job of removing noise from a photo. Plus it definitely doesn't require a bachelor degree in computing to use.