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How to Convert JPG to PNG

May 11, 20263 min read

Converting a JPG to PNG comes up most often when a JPG needs to go somewhere that requires (or benefits from) lossless quality, or as a first step before adding transparency — say, before removing a background. It's a straightforward conversion with one important limitation worth knowing upfront.

What conversion can't undo

JPG's compression is lossy — some image detail is discarded permanently when a JPG is saved, and that data doesn't come back just because you convert the file to a lossless format afterward. Converting a JPG to PNG locks in whatever quality the JPG already had; it doesn't restore detail that JPG's compression already threw away. If you need genuinely lossless quality, that has to start from an uncompressed or lossless source, not from an existing JPG.

So why convert JPG to PNG at all?

A few legitimate reasons: some software or upload systems specifically require PNG and reject JPG; you're about to make edits (like removing a background) that need PNG's transparency support, even though the source photo doesn't have transparency yet; or you want to avoid further generational quality loss from repeated JPG re-saves, since every additional JPG export recompresses and loses a little more detail, while PNG re-saves don't.

The file size will go up

Since PNG is lossless and JPG is compressed, converting to PNG generally increases file size — sometimes substantially, especially for photographic images with lots of color variation. This is expected and not a sign anything went wrong; it's simply the cost of a lossless format storing every pixel rather than a compressed approximation.

Adding transparency after converting

Converting to PNG on its own doesn't add transparency — a JPG has no transparency data to carry over, so the resulting PNG still has a solid background just like the original. If your goal is a see-through background (for a product photo or a logo, say), that requires a separate background-removal step after the format is converted to PNG.

JPG to PNG converts your file directly in your browser. If your next step is making the background transparent, Remove Background handles that automatically once you're working in PNG. For other format conversions, the image converter covers the full range of pairs.