What happens to transparency when converting to JPG?

JPG has no transparency channel, so any transparent area is filled white before converting — otherwise browsers would render it as opaque black.

Does this reduce image quality?

PNG stays lossless. Converting to JPG/WebP uses a high quality setting, so any difference is negligible for a normal photo.

No — the conversion runs entirely in your browser using the Canvas API.

Convert an image between PNG, JPG and WebP, entirely in your browser.

Choose an image

Drop a file, paste, or click to browse

Files never leave your device.

What happens to transparency when converting to JPG?: JPG has no transparency channel, so any transparent area is filled white before converting — otherwise browsers would render it as opaque black.
Does this reduce image quality?: PNG stays lossless. Converting to JPG/WebP uses a high quality setting, so any difference is negligible for a normal photo.
Does this tool upload my image anywhere?: No — the conversion runs entirely in your browser using the Canvas API.