Convert PNG to JPEG
Drop a PNG file below and get a JPEG back. The conversion happens on your own machine, so nothing is uploaded and there is no size or quantity limit beyond what your browser can hold in memory.
Drop images here
Accepts PNG
Lower means a smaller file. 75 is a good default for photos.
100% in your browser Files are never uploaded.
Why convert PNG to JPEG?
For the same picture, JPEG usually lands well under the size of the PNG original. That matters when you are trimming page weight or squeezing under an upload limit.
PNG can carry transparency; JPEG cannot. Transparent pixels are composited onto white during conversion, so a logo with a see-through background will come out sitting on a white rectangle.
PNG vs JPEG at a glance
| Property | PNG | JPEG |
|---|---|---|
| Compression | Lossless | Lossy |
| Transparency | Yes | No |
| Typical file size | 300-500% of an equivalent JPEG | 100% of an equivalent JPEG |
| Compatibility | Opens everywhere, including decades-old software | Opens everywhere, including decades-old software |
| Usually comes from | Screenshots, logos and graphics | Digital cameras and photo sharing |
Frequently asked questions
Are my PNG files uploaded anywhere?
No. The decoder and encoder are WebAssembly modules that run inside this page. You can verify it by opening your browser’s network tab — converting a file produces no outbound requests. You could even disconnect from the internet after the page loads and it would still work.
Is there a file size or quantity limit?
There is no limit imposed by us. The practical ceiling is your device’s memory, since the image has to be held uncompressed while converting. On a typical laptop, images up to around 100 megapixels convert without trouble.
Will converting to JPEG lose quality?
JPEG is a lossy format, so some data is discarded. At the default quality setting the difference is not visible at normal viewing sizes. If you need an exact copy of the pixels, choose PNG instead.
Does it work on a phone?
Yes. The same WebAssembly modules run on mobile browsers. Conversion is slower than on a desktop because phone CPUs are weaker, and very large images are more likely to hit memory limits.
My PNG is a screenshot — anything to watch for?
Screenshots are mostly flat colour and sharp text, which is what lossy formats handle worst. If the target is lossy, text edges can pick up faint halos. Use a high quality setting, or stay with PNG if the text has to remain crisp.
What quality setting should I use?
For photographs, 75 to 85 is the range where most people cannot tell the result from the original at normal viewing size. Below about 60 you start seeing blocky artefacts around sharp edges. Above 90 the file grows quickly in exchange for very little visible gain.