How do I convert a PNG file to a JPG?

On Windows, open the PNG in Paint and use File > Save as > JPEG picture. On a Mac, open it in Preview and use File > Export with the format set to JPEG. Both create a JPG copy in seconds. A browser tool does it even faster and handles several files at once.

How do I convert JPG to PNG?

The same apps go the other way. In Windows Paint, choose Save as > PNG picture. In Mac Preview, use File > Export and set the format to PNG. Converting JPG to PNG will not recover detail the JPG already lost, though, since that data is gone for good.

What happens to transparency when I convert PNG to JPG?

It disappears. JPG does not support transparency, so any see-through areas get filled with a solid color, usually white. If a transparent background matters to you, keep the file as a PNG or use a format that supports transparency.

Should I use PNG or JPG?

Use JPG for photographs and to shrink large images, since it compresses them far smaller. Use PNG for logos, screenshots, text, and anything that needs a transparent background or crisp edges. Photos look great as JPG; graphics stay sharper as PNG.

Is there a separate JPG to PNG tool on this site?

No, but you do not need one. The PNG to JPG converter works in both directions, so you can drop in a JPG and get a PNG back from the same page.

How to Convert PNG to JPG (and Back to PNG)

To convert a PNG to a JPG, open it in a basic image app and export or save it as JPEG. On Windows that means Paint (File > Save as > JPEG picture). On a Mac it means Preview (File > Export, format set to JPEG). Both take a few seconds and leave your original PNG in place. Going the other way, from JPG back to PNG, uses the exact same menus with the format swapped.

People change image format from PNG to JPG mostly to shrink a file. PNG keeps every pixel exactly, which makes it large, especially for photos. JPG compresses photos to a fraction of the size with no visible loss, so a heavy PNG photo becomes a light, easy-to-share JPG. The reverse move, JPG to PNG, comes up when you need to edit an image cleanly or want a format that supports transparency, though it comes with a catch we will get to.

How to convert PNG to JPG on Windows

Paint is on every Windows machine and handles this without any download.

Right-click the PNG and choose Open with > Paint.
Click File, then Save as.
Choose JPEG picture.
Pick a location, name the file, and click Save.

You now have a JPG copy alongside the original PNG. If you prefer the Photos app, open the image there, click the three-dot menu, and look for Save as to pick the JPEG format.

How to convert PNG to JPG on a Mac

Preview is the built-in tool and it is the quickest route.

Open the PNG in Preview (double-click usually opens it there).
Go to File > Export.
In the dialog, set the Format to JPEG.
Adjust the Quality slider if you want a smaller file, then click Save.

That is it. The JPEG lands wherever you chose, and the PNG is untouched.

The transparency gotcha

Here is the one thing that trips people up. PNG supports transparency, meaning parts of the image can be see-through. JPG does not support transparency at all. So when you convert a PNG with a transparent background to JPG, those clear areas have to be filled with something, and that something is almost always solid white.

This is why a logo that looked like it floated on any background suddenly sits inside a white box after you convert it. Nothing went wrong. JPG simply has no way to store "transparent," so the converter picks a background color. If the transparent background is the whole point of your image, do not convert it to JPG. Keep it as a PNG. If the transparency does not matter, for example a photo that fills the entire frame with no see-through areas, the conversion is clean and you lose nothing you can see.

How to convert JPG to PNG

Going from JPG back to PNG uses the same tools:

Windows: open the JPG in Paint, choose File > Save as > PNG picture.
Mac: open the JPG in Preview, choose File > Export, set the format to PNG, and save.

One honest caveat. Converting a JPG to PNG does not restore quality. JPG already discarded detail when it was first saved, and PNG cannot bring that data back. What you get is a PNG that preserves the JPG's current state exactly, with no further loss from that point on. That is genuinely useful when you are about to edit the image, add a layer, or cut out a background, because you will not stack more JPG compression on top with every save. Just do not expect it to sharpen a blurry photo.

The faster way: a two-way converter

For a single image the manual steps are fine. For a batch, or to skip opening apps entirely, use our free PNG to JPG converter. Drop your files in and it converts them right in your browser, so nothing gets uploaded to a server. It handles several images at once, which beats saving them one by one in Paint or Preview.

The same tool works in both directions. There is no separate JPG to PNG tool on the site, and you do not need one, because you can drop a JPG into the PNG to JPG converter and get a PNG back from the same page. One tool covers the round trip.

Which format should you pick

Choose based on what the image is:

Use JPG when	Use PNG when
It is a photograph	It is a logo, icon, or graphic
You need a smaller file	You need a transparent background
It is going to email or a website photo slot	It has sharp text or hard edges
Some quality loss is fine	You will edit it repeatedly

For a deeper look at how the two formats differ and when each one wins, see our full guide on JPG vs PNG. The short version: photos belong in JPG, graphics and anything transparent belong in PNG, and now you know how to move between them in either direction.