Image Converting

JPG to PNG

Drop JPG files here Or tap to choose. As many as you like; it all runs on your device.

Your images never leave this device

Local · lossless re-save

Converting a JPG to PNG makes a file that some tools and upload forms insist on. It does not make the image better and it does not give it a transparent background: it stores exactly the pixels the JPG had, losslessly, in a much larger file.

How to convert JPG to PNG

1 Drop your JPG files in, or tap to choose them.

2 They are redrawn as PNG. There is no quality slider, PNG keeps everything.

3 Save them one at a time or as a ZIP.

It is worth being blunt about what this cannot do, because it is the most common misunderstanding. The JPG compression artefacts. The faint blocky halos around edges; are pixels now, indistinguishable from real detail, and PNG will preserve them perfectly. Nor does the conversion create transparency: the background is opaque, exactly as it was. Removing a background is a separate editing job, not a format change.

Questions

Will this give my image a transparent background? −

No. That is an editing operation, not a conversion. The PNG will have the same opaque background the JPG had.

Does it improve the quality? +

Why is the PNG so much larger? +

When is this actually useful? +

Are files uploaded anywhere? +

Sources

MDN: image file type and format guide W3C, PNG specification

Was this tool any good?

Internal signal only · I use it to find the tools worth rebuilding