Local browser image processing
JPG to PNG Converter
Convert JPG images to lossless PNG for free, ready for editing and re-saving. Fast, private, and processed entirely in your browser.
No files selected
Your files will be listed here once you add them.
Nothing to configure
PNG is lossless, so there is no quality dial to set. Check the images on the left, then convert.
Processed locally in your browserYour files never leave this device. No uploads. No registration. 100% private.
Next step
Carry this file straight into another tool. It stays in your browser.
Counted with the browser's own PerformanceObserver, from the moment this page finished loading. Every request is counted, including this site's analytics — a counter that ignored some requests would not be worth reading.
Check it yourself: open DevTools (F12 or ⌘⌥I), pick the Network tab, tick Preserve log, then use the tool. Your file will not appear as an upload. Filter by Fetch/XHR to see requests the page made rather than assets it loaded.
Frequently Asked Questions
Does PNG improve JPG quality?
No. It preserves the current decoded pixels losslessly but cannot recover detail already discarded by JPEG.
Will the PNG background be transparent?
No. JPG has no alpha channel, so conversion creates an opaque PNG. Transparency must be added in an editor.
Why is the PNG much larger?
Lossless PNG stores photographic pixels less compactly than lossy JPEG in many cases.
Does the quality slider matter?
There is no quality slider for this page because PNG encoding is lossless.
When should I keep JPG?
Keep JPG for everyday photo sharing and size-sensitive delivery when PNG is not required.