Convert PNG to JPG
Get a smaller file for photos, with transparent areas filled white.
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How it works
Add your images
Drag and drop, paste, or pick files. They upload over an encrypted connection.
Pick a quality or a target size
Use the quality slider, or tell it exactly how many KB or MB you need.
Download
Save each file, or grab them all at once as a ZIP.
JPEG generally produces much smaller files than PNG for photographic images, so converting is worthwhile when a PNG was exported from design software but the content is actually a photo. Because JPEG has no concept of transparency, any transparent or partially transparent area in the source PNG is filled with white in the result.
If the PNG is a logo, icon or graphic with transparency that needs to stay transparent for its intended use, this conversion isn't the right choice; WebP is a better target since it keeps transparency while still compressing well.
This conversion needs no sign-up, and you can preview the result before downloading; the file is deleted from our servers within one hour. If the PNG you're converting has a transparent background intended to sit over a dark page, check the result carefully; a white background may look wrong in that context. A colour profile or text notes stored in the PNG are not copied into the JPG unless you ask for metadata to be kept.
Choose the background instead of accepting white
White is only the starting value. In the editor a colour control appears next to the format as soon as the output is JPG, and whatever you pick there replaces the transparent areas. This matters more than it sounds. Soft edges, such as the outline of hair or a drop shadow, are partly transparent, and they are blended into the background colour during conversion. Flatten a logo onto white and then place it on a navy page, and it will carry a pale halo. Flatten it onto the same navy and the edge disappears into the page.
How much smaller the JPG will be
It depends on what the PNG holds. A photograph saved as PNG is the best case: at this page's starting quality of 85 the JPG is typically a fifth to a tenth of the size, and side by side you would struggle to tell them apart. A screenshot or a chart is the worst case. PNG already stores flat colour very cheaply, so the JPG may be no smaller at all, and it will have picked up faint grey noise around every letter.
A quick test: if the picture came from a camera, convert it. If it came from a screen or a drawing program, keep it as PNG or try WebP.
Why a JPG cannot be turned back
Converting to JPG is a one-way step in two respects. The transparency is gone for good, because the background has been painted in and no later conversion can know which pixels used to be see-through. And the fine detail that JPEG rounded away does not return if you save the JPG as a PNG again; you only get a large file holding a slightly damaged picture. Keep the original PNG if there is any chance you will need the transparent version.
Frequently asked questions
What happens to transparent areas?
They're filled with solid white, since JPEG doesn't support transparency.
Why would I convert PNG to JPG?
Mainly to shrink photographic images that happen to be saved as PNG.
Will this lose any quality?
JPEG is a lossy format, so there is some quality trade-off, controlled by the quality setting.
Is there a way to keep transparency and still shrink the file?
Yes, convert to WebP instead, which supports transparency.
What quality should I use for a PNG to JPG conversion?
85 suits most photos. Go to 90 or above when the picture has text or thin lines, and down to 75 when size matters more than a perfect result.
Can I get the transparent background back from a JPG later?
Not by converting. A background remover can cut the subject out again, with a new edge that will not exactly match the old one.