JPG to PNG
Useful for editing and for tools that demand PNG. It will not improve the picture, and the file is going to get bigger.
Runs on your device — images are never uploadedDrop your images here
or click to browse — as many as you like
JPG · JPEG
Opens anywhere. No transparency, and each save loses a little.
90 is the sensible default. Below about 70 the edges of text and flat colour start to show it.
Converting is not compressing. Going to PNG makes most photographs larger, and no conversion can put back detail an earlier JPG already discarded.
How it works
Three steps, no account, and the images never leave your computer.
Drop the JPG files in
As many as you like. Anything your browser can open is accepted, so a mixed folder is fine too.
PNG is already selected
Change it if you want something else, and adjust the quality if the format has one. The panel warns you if transparency is about to be lost.
Convert and save
One file downloads on its own; several come down as a ZIP. Each shows whether it ended up smaller or larger than it started.
Why people do this conversion
A tool that only accepts PNG
App icon generators, some print templates and a surprising number of upload forms take PNG and nothing else.
Editing without accumulating damage
Convert once, edit as much as you like, export a JPG at the end. The loss happens once rather than on every save.
Before removing a background
Transparency needs a format that can store it. The conversion has to happen before the cut-out, not after.
A screenshot that was saved as JPG
Text in a JPG has a haze around it. PNG will not remove the haze, but it stops any more being added — and the file is usually smaller.
What this conversion does, and what it cannot do
Let us deal with the common hope first, because it is the reason most people arrive here.
Converting a JPG to PNG does not improve it. PNG is lossless, which means it will not lose anything more — but the detail the JPG discarded when it was first saved is gone, and no format can reconstruct it. What you get is a perfect, large copy of a picture that has already been compressed.
If the JPG looks blocky or has smudges around edges, the PNG will have exactly the same blocks and smudges, in a file three to eight times the size.
So when is it worth doing
Before editing. This is the real reason. If you are going to open a picture, change it, save it, open it again and change it again, doing that in JPG degrades it a little on every save. Convert to PNG first, do all your editing losslessly, and export a JPG at the end. The damage then happens once instead of ten times.
Because something demands PNG. Some upload forms, print templates, app icon pipelines and design tools accept PNG only. The conversion is the answer regardless of what it costs.
Because you are about to add transparency. JPG cannot store it. If the next step is cutting out a background, the file has to be PNG before that step can mean anything.
The size shock
A 2 MB JPG photograph commonly becomes a 12 MB PNG. That is not a bug — it is PNG doing its job, storing every pixel exactly rather than approximating. For a photograph, exact storage is expensive.
| Source | Typical PNG size |
|---|---|
| Photograph | 3 to 8 times larger |
| Screenshot or diagram | Often smaller than the JPG, and sharper |
| Flat-colour graphic | Much smaller than the JPG |
The last two rows are worth noticing. If your JPG is a screenshot or a graphic, converting to PNG can genuinely be an improvement in both quality and size — because it was the wrong format to begin with.
Common questions
Will converting to PNG improve the quality?
No. PNG will not lose anything further, but it cannot recover detail the JPG already discarded. The picture stays exactly as it looks now, in a bigger file.
Why is the PNG so much larger?
PNG stores every pixel exactly instead of approximating. For a photograph that costs three to eight times the space. For a screenshot or a flat graphic it often costs less than the JPG did.
Does this give my image a transparent background?
No. It produces a PNG that can hold transparency, but the picture still has whatever background it had. Removing the background is a separate step.
Should I edit in PNG and export JPG?
Yes, that is the right workflow. Every JPG save loses a little, so doing ten edits in JPG damages the picture ten times. In PNG the damage happens once, at the end.
Is my image uploaded?
No. The conversion runs in your browser, so nothing is sent anywhere and there is no size limit.
More tools
Every one of them runs on your device. No uploads, no accounts.