PNG to JPG Converter
Convert PNG — lossless, and it keeps transparency — into JPG, the format everything can open. Runs entirely in your browser.
Why convert PNG to JPG?
The usual reason is size. A screenshot pasted into a bug report, a photo exported as PNG by a tool that should have known better, an attachment that will not send — PNG stores photographs very inefficiently, and moving to JPEG routinely cuts the file to a fifth of what it was or less.
What changes when PNG becomes JPG
Quality 85, the setting where JPEG artefacts stop being visible on photographic content. Transparency is composited onto white, because JPEG has no alpha channel: a PNG with a transparent background comes out with a white one. Text and sharp diagram edges soften slightly, so for screenshots full of small type, WebP is the better target.
Why this one is different
Every other PNG to JPG converter uploads your files to their server, which is why they cap file sizes and ask you to sign up. This one does the work on your own machine, so it can afford not to.
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Questions
How do I convert PNG to JPG?
Drop your PNG files onto the box above and each one is converted to JPG straight away. Then download the results, individually or together as a ZIP. There is no upload step and no account.
My transparent background turned white.
It has to become something. JPEG cannot store transparency, so every transparent pixel is composited against white before encoding. Convert to WebP instead, or stay on PNG, if you need it kept.
How much smaller will it get?
For a photograph, usually five to twenty times. For a screenshot of flat interface colour, sometimes barely at all — PNG is already good at that kind of image and JPEG is bad at it.
Do my files get uploaded anywhere?
No. Everything happens in this tab. Your files are never sent to a server, which is why this still works if you disconnect from the network after the page has loaded.