JPEG is the most widely used file format, yet it has one major weakness: it has no handle alpha channel. When you need a product image to sit on a different surface without an ugly white box, you need PNG file type.
Changing JPG to PNG is a straightforward process, and knowing when this is the right decision will save effort and eliminate unneeded storage waste.
The main motivation to change JPG to PNG is to gain access to PNG's alpha channel. Essential for watermarks and design assets required to sit cleanly over various backgrounds.
A key website point to understand: changing a JPG to PNG does not produce the background transparent. You will need to delete the background through a photo editor such as Photoshop or GIMP.
One thing to be careful about during conversion of JPG to PNG is that PNG files are almost always heavier than their JPG counterparts. This is because PNG applies non-destructive compression which stores all pixel data.
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