How to convert JPG to PNG

Create a PNG copy of a JPEG

The preset accepts JPG/JPEG input identified by the browser as image/jpeg. It supports up to five files, each within 15 MiB and 40 megapixels.

1. 1

   Choose your JPEG files or try the sample.

2. 2

   Process them with the fixed PNG output. A lossy quality slider does not control PNG encoding.

3. 3

   Download each PNG and compare its dimensions, size and appearance with the source.

PNG does not recover JPEG detail

PNG losslessly encodes the pixels it receives from decoding the JPEG. It cannot recover edges, textures or color detail already removed by the original JPEG encoding. Keep the best source image available.

Changing .jpg to .png in a filename does not perform conversion. Use the exported file so the actual image encoding matches the format the destination expects.

Why the background stays visible

Although PNG supports transparency, a JPEG source does not contain an alpha channel. This converter retains the source pixels, including its background. It does not detect a subject or cut anything out.

If the goal is a transparent logo, obtain the original transparent artwork or use a dedicated background-removal workflow. Merely switching file formats will not create the missing transparency.

Expect the file size to change

PNG can be much larger for a photograph. The preset preserves pixel dimensions and reports the actual output size; it does not promise compression. Check any upload byte limit before sharing the copy.

Newly encoded results omit source metadata. Keep the original JPEG for other uses, and use Resize image separately if the destination also asks for fewer pixels.