JPEG is the most popular image format, but it has one significant limitation: it does not support transparency. If you need a graphic to display on a patterned canvas without an ugly white box, you need PNG format.
Converting JPG to PNG is a simple operation, and knowing if it is the best option saves you time and avoid extra storage waste.
The most common purpose to change JPG to PNG is to gain access to PNG's alpha channel. Very important for watermarks and design assets that need to blend seamlessly over any background.
Something important to understand: changing a JPG to PNG will not automatically make the alpha channel. You website must still to remove the background through a photo editor like Photoshop or GIMP.
Be careful about when converting JPG to PNG is that PNG images are almost always heavier than their JPG equivalents. This is because PNG applies lossless compression that stores more image data.
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