I have a unique problem that I haven't been able to find an answer to.
When I export in Illustrator with multiple artboards, my png's are the wrong size. For example, if I have a 300x250, it is exporting to 1251 × 1042. So, I have seen a "fix" to just uncheck the "include bleed" in the export. However, when I export that way, the size is off by 1 pixel (300x251). On these previous exports, I have exported at 300 PPI.
Another answer I have seen is to reduce the resolution to 72 PPI. When I export this way, the image is so pixelated that it's borderline unreadable. What am I missing? I have used photoshop to export images via artboards in the past and have never had this issue. Is it a PNG vs JEPG issue? Any help is appreciated!