Illustrator artboard at 1024 x 1024 - if I save the image as a jpg at 300 dpi, the image is sharp quality but saves at 4267 x 4267
If I save the same 1024 x 1024 artboard image at 72 dpi, the image saves at 1024 x 1024 but is very noticeably much blurrier.
Why? How can I save at the maximum quality that should be the default for a vector program like Illustrator at the artboard size?
Thanks so much for any help!