Why convert a PNG to JPG?

PNG is lossless, which makes screenshots and graphics look sharp but also large. JPG compresses photographic content far more efficiently, and it's the format most upload forms with a size limit actually expect.

My PNG has a transparent background — what happens to it?

JPG has no transparency channel, so transparent areas are filled with white before saving. If you need to keep the transparency, convert to WebP instead of JPG.

Can I hit an exact file size at the same time?

Yes — turn on 'Maximum file size' as well and both the format and the size target are applied together in a single pass.

Some — JPG is a lossy format. At the default quality the difference is rarely visible; if you need control over it, turn on quality manually and adjust the slider.

Convert PNG to JPG Online — Free, No Upload

When PNG is the wrong format

PNG is a lossless format, built to keep every pixel exactly. That is perfect for logos, diagrams and screenshots with sharp edges and flat colours. It is a poor fit for photographs: a photo saved as PNG is typically five to ten times larger than the same photo as JPG, with no difference you could see. If a form says it wants a JPG, or an upload is too large, converting a photographic PNG is the quickest fix.

How to convert

Drop your PNG on this page. It is read in your browser and never uploaded.
The image is saved back as a JPG at a high quality setting.
If you need to hit a particular file size as well, switch on the size requirement and the quality will be chosen to fit.

Transparency: the one real difference

JPG has no transparency. If your PNG has a transparent background, such as a logo or a cut-out, those areas have to become some colour. Here they become white, which is almost always what a document or form needs. If you need to keep the transparency, stay with PNG or move to WebP, which supports it and is usually smaller. See convert JPG to WebP.

Which images should and should not become JPG

Image	Convert to JPG?	Why
Photograph saved as PNG	Yes	Large saving, no visible loss
Screenshot of a web page or app	Usually yes	Fine for sharing; text is a little less crisp at low quality
Logo with transparent background	No	JPG would fill the transparency with white
Line art, diagrams, text-heavy graphics	Only if size matters	JPG can blur thin lines; use a high quality setting
An image you will edit repeatedly	No	Every lossy save discards a little more

Savings depend on the picture. Photographs gain the most; simple graphics may not shrink much and can even grow.

Quality, in plain terms

JPG discards fine detail that is hard to notice. At a high quality setting the result looks identical at normal size, and the difference only shows when you zoom in far or edit it heavily. For a photo that is going to be viewed or uploaded, that is a very good trade. For a master copy you plan to keep, keep the PNG as well. The JPG vs PNG vs WebP guide explains when each one earns its place.