What is a transparent PNG?
A transparent PNG is a PNG image with no background, so whatever sits behind it shows through. PNG stores an alpha channel that records how opaque each pixel is, which lets a logo or cutout sit cleanly on any color. JPG cannot hold transparency, which is why cutouts are saved as PNG.
How transparency is stored
Every pixel in a PNG can carry an alpha value from fully solid to fully see-through. When you remove a background, the removed pixels are set to fully transparent, so the subject floats on whatever you place behind it.
Where transparent PNGs are used
Logos, product cutouts, stickers, and watermarks all rely on transparent PNGs so they blend onto any page, slide, or photo without a visible box around them.
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Frequently Asked Questions
How do I make a PNG transparent?
Remove the background from your image and export it as a PNG. The removed area becomes transparent, and PNG keeps that transparency when you save.
Why does my PNG have a white box around it?
The background was not removed, or the file was saved as a JPG, which cannot store transparency. Remove the background and save as PNG.
Can JPG be transparent?
No. JPG has no alpha channel, so it always fills the background. Use PNG or WebP when you need transparency.