Need a background removed, or want to make further edits without compounding JPEG's lossy compression artifacts? This tool converts a JPG image into lossless PNG format.
Moving from a compressed format into one built for editing fidelity
Every time a JPEG is opened, edited and re-saved as a JPEG again, its lossy compression algorithm reapplies, discarding a small additional amount of detail each time — an effect called "generation loss" that compounds noticeably after repeated edit-and-resave cycles. Converting to PNG doesn't undo any quality already lost in the original JPEG, but it stops the compounding: because PNG's compression is lossless, subsequent edits and saves in PNG format won't introduce any further quality degradation the way continued JPEG re-saving would.
What happens during JPG-to-PNG conversion
The tool decodes the JPG's pixel data (including whatever compression artifacts already exist in the source file, since these can't be removed by conversion alone) and re-encodes those exact pixels using PNG's lossless compression algorithm — from this point forward, further edits and saves won't add any additional generational quality loss, though the original JPEG compression's effects remain baked into the pixel data itself.
Where converting JPG to PNG is genuinely useful
- Preparing an image for background removal — adding transparency to an image (like removing a background) requires a format that actually supports transparency, which JPG fundamentally doesn't, making PNG the necessary intermediate or final format.
- Stopping the accumulation of compression artifacts during editing — converting to PNG before a series of edits prevents each additional save from introducing more JPEG-style compression degradation on top of the already-edited image.
- Working with logos, icons or graphics that started as JPG — a logo or graphic mistakenly saved as JPG (introducing unwanted compression artifacts around sharp edges and text) benefits from being cleaned up and preserved as PNG going forward.
- Meeting a platform's format requirements — some upload systems, design tools or print processes specifically require or strongly prefer PNG over JPG for certain kinds of content.
Frequently asked questions
Does converting JPG to PNG remove the JPEG compression artifacts already present? No — conversion can't restore detail that was already discarded by the original JPEG compression; it simply preserves the pixel data exactly as it currently exists (artifacts included) going forward without introducing any further loss.
Will the PNG file be larger than the original JPG? Almost always yes, often substantially — because PNG's lossless compression can't achieve the same dramatic size reductions JPEG's lossy compression does for photographic content, converting a JPG to PNG typically increases file size significantly, even though the actual image content and quality remain the same.
Can I add transparency to my image after converting from JPG? Yes — once converted to PNG, the format supports an alpha (transparency) channel, so you can then use a background removal or transparency tool to make parts of the image see-through, which wasn't possible while the file remained in JPG format.
Further reading
Wikipedia — Generation loss — How repeated lossy compression, like re-saving JPEGs, compounds quality degradation over time.