Convert JPG
to PNG.

Converting to PNG does not improve the image

This is the part most JPG to PNG pages leave out. A JPEG throws away detail the moment it is first saved, and that detail is gone permanently. PNG is lossless, which means it preserves exactly what it is handed - including every soft edge, blocky patch and halo the JPEG already baked in. You end up with a perfect copy of a lossy image, not a better one.

You also end up with a much larger file, usually several times the size of the JPG. PNG has no way to compress photographic detail as aggressively as JPEG does, so a photo that sits comfortably in a few hundred kilobytes as a JPG can run to megabytes as a PNG. If nothing is forcing your hand, keep the JPG.

When it is genuinely worth doing

Plenty of upload forms, print templates, icon pipelines and design tools accept PNG and nothing else, and no amount of arguing changes that. The other good case is editing: every time you re-save a JPG it is re-encoded and loses a little more, so if a file is heading into several rounds of edits, convert once to PNG and work from that instead. Re-saving a PNG costs you nothing.

Common questions

Should I choose Compressed or Lossless?

This page starts on Lossless, which is the right choice for a true conversion - every pixel of the decoded JPEG is kept. Compressed quantises the image to a colour palette, which shrinks flat graphics, logos and screenshots dramatically but visibly bands photographs. See compress PNG if size is the real problem.

Does converting to PNG give me a transparent background?

No. JPG has no alpha channel, so there is no transparency to carry across and the PNG comes out fully opaque. PNG supports transparency, but the format alone cannot invent it. Squish is a converter and compressor, not a background remover.

Can I convert back to JPG later?

Yes - see PNG to JPG. Worth knowing that a second JPEG encode adds a fresh round of loss on top of the first, so avoid bouncing a photo back and forth more than you need to.

Can I convert a whole folder?

Drop in as many JPGs as you like. Several convert at a time and Download all hands you a zip. The rename-on-export field can number them with {name} and {index} tokens.

What happens to my files?

They are processed in memory and never stored - nothing is retained once the converted file comes back. EXIF orientation is applied so photos land the right way up, and metadata including GPS is stripped from the output. Free, no signup, no watermark.