A transparent PNG badge, before and after JPG export
A conversion study by Image to JPG. We drew a 320 × 192 badge with three flat shapes and transparent corners, then ran it through our converter at its default 90% quality and white background.
Actual browser conversion. Both files are 320 × 192. The preview reports 1.5 KB for the PNG and 7.1 KB for the JPG.The white corners are now part of the picture. Place the JPG on a dark slide and those corners stay white. For this small, flat graphic, the PNG also takes less space. Keep it for reuse and export a JPG copy when the destination requires one.
Try the PNG to JPG converter or download the original sample PNG to repeat the comparison.