Convert JPG to PNG

Read this before you convert jpg to png

This conversion does not improve the picture, and the file will almost certainly get bigger — three to ten times bigger is ordinary for a photograph. Both halves of that sentence are worth taking seriously, because most pages offering this conversion say neither.

Nothing comes back because there is nothing to come back. A JPEG threw detail away at the moment it was first saved, and that detail was not kept anywhere. The soft blocks in a sky, the ringing around text, the smeared edges in a dark corner: those are not a wrapper the PNG can strip off. They are the picture now. Converting to PNG preserves what remains perfectly, which means you end up with a flawless, permanent, considerably larger copy of the flaws.

The estimated new size sits on every file card before you run anything, so the number is never a surprise on the receipt. If nothing here matches what you needed, the honest answer is to keep the JPG.

Three reasons to do it anyway, all of them good

Something you are uploading to only accepts PNG. Print services, avatar and badge uploaders, government and university portals, older internal systems, app store asset requirements, plenty of e-signature tools. The requirement is often about guaranteeing a lossless pipeline downstream, and sometimes it is a form validator nobody has revisited in a decade. Either way arguing with it is not an option, and the conversion is the whole job.

You are about to edit the image repeatedly. Every save of a JPG re-encodes the entire image, including the parts the previous save already damaged. Open, adjust, save, reopen, adjust again, and the degradation compounds visibly within a handful of rounds. Moving to PNG once does not repair the damage already done, but it stops the counter. From that point every save is identical to the last, however many there are. If a file is about to enter a workflow with several editing passes, converting at the start is the correct move.

You need to add transparency later. Cutting a subject out, removing a background, or dropping a logo onto a colored surface all require a format that can carry an alpha channel. JPEG cannot, at all. So the conversion has to happen before the editing, not after — you cannot cut the background out of a JPEG and then save the transparency into a format with nowhere to put it.

The PNG will not have a transparent background

This is the most common misunderstanding people arrive with, and it is worth stating flatly. A JPEG has no transparency to preserve, so every pixel comes out fully opaque. What you get is a PNG that is capable of holding transparency, not one that has any. The white area behind your logo is still white pixels. It looks exactly the same as it did, because it is exactly the same.

Removing that background is a separate operation done in an editor or a background remover, and this conversion is the prerequisite for it rather than a substitute. Any tool promising that a format change alone produces a cutout is describing something the format change does not do.

Why the settings panel is nearly empty

There is no quality slider here. PNG is lossless — there is no quality to trade, and a slider would be a control that changes nothing while implying it changes something. There is no background color picker and no option to preserve transparency, for the same reason in reverse: the source is a JPEG, so there is no alpha anywhere in the input to fill in or protect.

What remains is a limit on the longest side, which does make a real difference — both to the output size and to whether an upload form accepts the result. The sibling tool atPNG to JPG has a quality slider and a background color picker because in that direction both of them genuinely do something. That asymmetry is why these are two pages rather than one page with a direction switch: half the interface would have to disappear on every flip.

Why the file grows so much

PNG stores every pixel exactly and compresses by finding repetition — runs of identical color, rows that resemble the row above. That works beautifully on screenshots, logos and line art. A photograph is the opposite: millions of values that differ slightly from their neighbors, with sensor noise on top, and almost nothing repeats. There is little for the compressor to work with, so it stores something close to the raw pixels.

A JPEG of the same photo achieved its small size by discarding most of that variation. The gap between the two numbers is the detail JPEG threw away — except you are now paying for the bytes without owning the detail. JPG vs PNG explains which format suits which material, and what PNG actually stands for covers where the format came from and why it works this way.

If what you wanted was a smaller file

Most people searching around these two formats want the image to weigh less, and this page is the wrong direction for that. PNG to JPG is the conversion that pays, and if you are trying to land under a specific limit rather than change format at all,compressing to a target size solves that directly by searching for the setting that fits.

The conversion runs entirely in this tab. Your browser already decodes JPEG and already writes PNG, so there is no server involved and no upload endpoint on this site for it. That also means EXIF data, color profiles and copyright fields are not carried across — a canvas writes pixels and nothing else — so keep your originals if the capture data matters.