Convert JPG to PNG
Turn JPG photos into lossless PNG files — right here in your browser. Your images are never uploaded.
Drop JPG files here or click to choose
Converted on your device — never uploaded
How to convert JPG to PNG
- Drop your JPG files into the box above, or click it to pick files.
- Wait a moment while your browser decodes each photo and writes a pixel-identical PNG.
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Download each result —
photo.jpgbecomesphoto.png.
The honest version: what this conversion does
Plenty of converter sites sell JPG to PNG as an upgrade. It is not one. JPEG is lossy: the moment your camera or editor saved the file, fine detail was thrown away for good. Converting to PNG copies whatever survived into a lossless container — it cannot bring back what is gone, and it will not sharpen a soft photo or remove JPEG artefacts.
What it does give you is a file that stops degrading. Every time a JPG is opened, edited and re-saved, it is compressed again and loses a little more. PNG re-saves are free of that, which is why it is the sensible working format for anything you will edit repeatedly, and the format many upload forms, design tools and print workflows insist on.
The cost is size. Expect the PNG to be several times larger than the JPG for photographs. If your goal is a smaller file rather than a lossless one, this is the wrong tool — compress the JPG or convert it to WebP instead.
JPG vs PNG at a glance
| JPG | PNG | |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | Not supported | Full alpha channel |
| File size (photos) | Small | 3–10× larger |
| Repeated re-saving | Degrades each time | No further loss |
| Best for | Photos on the web, email, sharing | Editing, graphics, text, screenshots |
Frequently asked questions
Are my JPG files uploaded anywhere?
No. The JPG is decoded by your browser and re-encoded as PNG on your own device, then squeezed through the OxiPNG optimiser. Nothing is sent to a server, and the page keeps working if you go offline after loading it.
Does converting JPG to PNG restore the lost quality?
No, and any site that implies otherwise is misleading you. JPEG compression permanently discards detail when the file is first saved. Converting to PNG stores exactly what is left — including the blocky edges and colour halos JPEG introduced — it just stops any further loss from happening.
Why is the PNG bigger than the JPG?
That is normal and expected. PNG is lossless, so it has to describe every pixel, while JPEG throws pixels away to get small. A photo saved as PNG is commonly three to ten times larger than the JPG it came from. Screenshots and flat graphics grow much less, and sometimes shrink.
When is JPG to PNG actually worth doing?
When something downstream requires PNG: an upload form or app that rejects JPEG, a printing or design tool, or a logo you are about to cut a transparent background into. It is also the right move before repeated editing, because re-saving a JPG over and over compounds the compression damage while PNG does not.
Does the PNG get a transparent background?
No. JPEG cannot store transparency, so there is nothing to recover — the converted PNG keeps the solid background the photo already had. PNG simply gives you a format that can hold transparency once you remove the background in an editor.
Is there a quality setting?
There is nothing to set. PNG is lossless, so every pixel of the decoded JPG is written exactly as-is. The only tuning left is compression effort, which the OxiPNG optimiser applies automatically to keep the file as small as a lossless file can be.
Can I convert a whole folder of photos?
Yes — drop or select as many JPG files as you like and each one gets converted on your device with its own download link. Remember the size trade-off before doing this to a large photo library.