JPG to PNG Converter

Converting JPG to PNG is about stopping the bleeding. Every time a JPG is edited and re-saved, its lossy compression discards a little more detail - visible as mushy edges and blocky gradients after a few rounds. Moving the image into PNG gives you a lossless container: from that point on, every crop, annotation, and re-save preserves the pixels exactly.

ImgShifter does the conversion in your browser with the Canvas API - the JPG is decoded once and written out as PNG with no further quality decisions to make, because PNG has no quality dial. Expect the file to grow, often several times over for photos; that's the cost of lossless storage and the reason PNG suits working files rather than sharing copies.

Be clear about what this can't do: detail the JPG compression already destroyed is gone, and no format change brings it back. What you gain is a stable master for editing, a format that upload forms and design tools always accept, and - since the conversion is fully client-side - a workflow you can run with the network unplugged.