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KuponGuru

JPG to PNG

Convert JPG photos to lossless PNG files in a batch, without uploading them anywhere.

FreeRuns in your browser

About the JPG to PNG

Some design tools, upload forms and editing workflows want PNG. Convert JPG files to PNG in one step: the PNG stores exactly the pixels the JPG contains, so nothing further is lost from here on however many times it is saved.

How to use it

  1. 1Add one or more JPG files.
  2. 2Press Convert.
  3. 3Download the PNGs individually or as a ZIP.

Questions

Does converting to PNG improve the quality?

No. PNG keeps exactly what the JPG contains, including any compression blur already in it. What it prevents is further loss when the image is edited and saved again. Expect the PNG to be larger than the JPG.

Can the PNG have a transparent background?

A JPG has no transparency to carry over, so the PNG is fully opaque. Removing a background is a separate task.

Are my images uploaded?

No. The images are processed in this browser tab, using WebAssembly builds of the same open-source encoders Google's Squoosh uses. They never reach KuponGuru's servers, and closing the tab discards them.

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