How is a PNG different from a JPG?
PNG and JPG store pictures in two very different ways. PNG is lossless: every pixel is kept exactly as it was, and the format supports transparency. JPG is lossy: it discards fine detail the eye is unlikely to miss, and it has no transparency at all.
That difference explains the file sizes. A screenshot or a flat graphic compresses nicely as PNG, but a photograph saved as PNG can be several times larger than the same photo saved as JPG. Converting a photo-style PNG to JPG is usually the quickest way to get a file that is easy to email, upload or embed on a page.
When it makes sense to turn a PNG into a JPG
The most common reason is file size. Many upload forms, email clients and content management systems set a maximum attachment size, and a large PNG photo is often what pushes you over it.
Another reason is compatibility. Some print services, forms and older software ask specifically for a JPG. And if your image is a photograph or a scan with lots of gradual color changes, you gain a lot from JPG and lose very little you could actually see.
JPG is a poor fit for logos, line art and text-heavy screenshots, where the compression can leave fuzzy halos around sharp edges. For those, stay with PNG or try PNG to WEBP.
How to convert PNG to JPG with this tool
- Drag your PNG onto the upload area, or click it to choose a file from your device.
- Check the original preview and the file name and size shown beneath it.
- Move the Quality slider if you want to. It ranges from 10% to 100% and starts at 92%.
- Click Convert to JPEG. A preview of the result appears next to the original, along with a comparison of the file sizes.
- Click Download to save the file. It keeps your original file name with a .jpg extension.
The conversion happens in your browser using a canvas, so the image is not sent to a server. Use Start over to load a different file.
Tips and limits to know about
Transparent areas turn white. JPG cannot store transparency, so this tool paints a white background first and then draws your image on top. If your PNG has a see-through background and you need it to stay that way, keep it as PNG or use WebP.
Lower quality means a smaller file. If the result is still too large, lower the slider a little and compare the preview again. Very low values will show blocky artifacts, especially around text.
Convert from the original when you can. Each time a JPG is re-saved, a little more detail is lost, so avoid converting the same image back and forth.
The tool handles one image at a time. If your goal is only a smaller file in the same format, the image compressor may be a better fit.