Convert JPG to PNG
There are two good reasons to make this conversion and one common misconception. The good reasons: you are about to edit the image repeatedly and want no further compression loss, or something you are uploading to only accepts PNG. The misconception is that converting to PNG improves quality. It cannot.
Files are decoded and re-encoded inside this browser tab. Nothing is uploaded — you can disconnect from the internet after this page loads and conversion still works.
Conversion runs in your browser with no upload, and handles batches.
How to convert JPG to PNG
- Drag your JPG files onto the box above, or click it to browse.
- Each file converts in place — no upload, no queue.
- Download them one by one, or grab the whole batch as a ZIP.
PNG cannot restore what JPEG discarded
JPEG compression works by throwing away detail the eye is unlikely to notice. Once discarded, that information is gone from the file permanently. Converting to PNG stores whatever pixels remain with perfect fidelity, but it has nothing to recover — the softness and the blocky artefacts around hard edges come with it.
What you gain is that no further degradation happens. Every time you open a JPEG, edit it, and save it again, another round of compression runs and a little more detail goes. PNG saves are free. If an image is going through several editing passes, converting to PNG first is genuinely worthwhile.
Expect a much larger file
For photographic content, a PNG is typically three to six times the size of the JPEG it came from, and sometimes more. Photographic noise is close to random, and lossless compression cannot do much with randomness.
This trade only makes sense when you need the losslessness or the format. For sending a photo to somebody, keep the JPEG.
Transparency is not created by converting
PNG supports an alpha channel, but converting a JPEG does not add one — there was no transparency information in the source to carry over, so you get a fully opaque PNG. What conversion does is give you a file that can hold transparency once you erase parts of it in an editor, which is why designers often convert before cutting out a background.
Frequently asked questions
Does converting JPG to PNG improve quality?
No. PNG preserves exactly what is in the JPEG and nothing more — compression artefacts included. What it prevents is further loss from subsequent edits and saves.
Why is the PNG so much larger?
PNG is lossless, so it must store every pixel exactly. For photographs that typically means three to six times the size of the JPEG, occasionally more.
Will the PNG have a transparent background?
No. A JPEG has no transparency to carry across, so the result is fully opaque. It can hold transparency once you edit it, which is why this conversion is a common first step before cutting out a background.
When should I use this?
When the image is about to be edited and re-saved several times, or when a form or piece of software will only accept PNG. Otherwise the JPEG is the better file.
Are my files uploaded?
No. Everything is processed locally in your browser.