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ImageDoctor

JPG to PNG Converter

Save JPG photos as lossless PNG files — singly or in bulk, processed in your browser.

Drop JPG images to convert to PNG

Add JPG images and they're saved as PNG. Add several to get a ZIP.

Processed locally in your browser

JPG · PNG · WebP · AVIF · GIF · BMP · TIFF · SVG

Common conversions

Converting a transparent PNG to JPG flattens transparency onto a background colour you choose. Animated GIFs are flattened to their first frame.

Converting JPG to PNG

Add your JPG files above and download them as PNG. The PNG is a pixel-for-pixel copy of the JPG: nothing is lost in the conversion, and nothing is gained either — any blur or compression artefacts in the JPG are copied exactly.

What changes when a JPG becomes a PNG

Result
Picture qualityIdentical to the JPG, artefacts included
File sizeLarger — for photos, often five times the JPG or more
TransparencyNone added. The background stays solid
Future savesNo further loss, because PNG is lossless
Hidden metadataRemoved by default (the Strip metadata switch)

When converting is worth it

  • You are going to edit the image repeatedly. Each JPEG save loses a little; a PNG working copy doesn't.
  • A platform or template requires PNG.
  • You plan to cut out the background. The PNG can hold the transparency once you remove it — the conversion alone doesn't. See how to make a background transparent.

When it isn't

  • To make a blurry or blocky JPG look better. PNG preserves what is there; it can't restore what JPEG compression removed.
  • For a website. A PNG photo is several times heavier than it needs to be. Convert to WebP with JPG to WebP instead.
  • For email or uploads with a size limit. Keep the JPG, or compress it.

The longer version, with the reasons the PNG gets bigger, is in JPG to PNG: how to convert, and when it's worth it.

Common questions

No. The PNG copies the JPG's pixels exactly, including its compression artefacts. It only prevents further loss if you edit and save the image again.

PNG is lossless, and lossless compression can't shrink photographic detail the way JPEG does. For photos, a PNG is commonly several times the size of the JPG it came from.

No. A JPG has no transparency, so the converted PNG has the same solid background. Transparency has to be created by removing the background.

Yes. Add all the files; each one is converted and you can download them together as a ZIP.