RunToolRunPNG to JPG
Convert PNG files to JPG format.
How to Convert PNG to JPG
Select your PNG files
Click the upload area or drop one or more .png images. You can convert a whole batch at once.
Automatic conversion
Each PNG is re-encoded as a high-quality JPG (92% quality) in your browser. Transparent areas are flattened onto a white background.
Download the JPGs
Save every converted file individually — smaller and ready to share.
You are trading two properties away
PNG is lossless and supports transparency. JPEG is lossy and does not. Converting therefore gives up both at once, and gets a much smaller file in return — often a fifth of the size for a photograph, with no difference the eye can find.
Transparency is the one that surprises people. JPEG has no alpha channel at all, so transparent pixels have to be filled with something before encoding. This tool fills them with white, which is what almost everyone expects. If your PNG was a logo designed to sit on a coloured background, the converted JPEG will carry a white rectangle around it permanently.
When this conversion is right
Photographs saved as PNG are the clear case. A camera image stored losslessly is enormous for no benefit — there is no transparency to preserve and no hard-edged graphics to protect, so JPEG's compression is pure gain. Screenshots of photographs behave the same way.
It is also the right move when the destination demands it. A great many upload forms, older content systems and print workflows accept JPEG and nothing else, and a smaller file genuinely matters for email attachments and pages that have to load on a slow connection.
When it damages the image
Screenshots of interfaces, diagrams, logos and anything containing text are the wrong candidates. JPEG compresses by discarding high-frequency detail, and a hard black edge against white is nothing but high-frequency detail. The result is the familiar smear of grey speckles around every letter, most visible exactly where legibility matters.
Flat-colour graphics also compress badly in JPEG and well in PNG, so the conversion can produce a file that is both uglier and barely smaller. If the image has large areas of a single colour, or if any part of it is text, keep it as PNG or move it to WebP instead.
The conversion is one-way
Once encoded as JPEG, the discarded detail is gone and the transparency is gone. Converting back to PNG afterwards produces a large file containing the JPEG's artefacts preserved losslessly — the worst of both formats. Keep the original PNG rather than relying on being able to undo this.
The encoding runs in your browser at quality 92, a setting high enough that artefacts stay invisible on normal photographs. Nothing is uploaded, so screenshots of private documents and photographs of people never leave your device.