What happens to transparency?

JPG can't store it. Transparent pixels get flattened onto a white background.

Will the JPG look different from the PNG?

Photos look identical at the default quality. Sharp screenshots and text can pick up faint JPG artifacts, so keep the PNG if crisp edges matter.

PNG to JPG

Re-encodes PNG as lossy JPG. JPG has no alpha, so any transparency flattens onto white.

What this does

This re-encodes each PNG as a lossy JPG. The pixels are drawn onto a canvas and exported as JPEG, which compresses photos to much smaller files. JPG has no alpha channel, so any transparent areas are flattened onto a white background.

How it works

1Drop your PNG images.
2Download each one, or grab them all as a zip.

Built on web standards

Built with standard browser APIs — no third-party libraries.

Frequently asked questions

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