Convert JPG to PNG
When the tool insists on PNG — converted cleanly on your device, with an honest note about what this can and cannot improve.
Drop your image here
or
JPG, PNG, WebP — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
JPG to PNG exists for one main reason: something in your workflow — a design tool, a game engine, a document system, a print shop — accepts only PNG. The conversion itself is instant and clean: your JPG's exact pixels, repackaged losslessly into a PNG that any strict pipeline will swallow.
What this conversion cannot do — despite what some tools imply — is improve quality or add transparency. The JPG's compression artifacts, if any, come along unchanged (nothing further is lost, either), and the image stays fully opaque. Expect a notably larger file: that is PNG's lossless storage at work.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Choose quality or size
Pick a quality preset, set an exact KB target, or switch the output format — tuned for jpg to png.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Will converting JPG to PNG improve my image quality?
No — and any tool suggesting otherwise is misleading you. PNG preserves exactly the pixels your JPG already has, artifacts included. What you gain is compatibility with PNG-only tools and a guarantee that no further quality is ever lost.
Why is the PNG so much bigger than my JPG?
PNG stores every pixel losslessly instead of JPG's compressed approximation — several times larger is normal, especially for photos. That is the price of the format's guarantees.
Can I make the background transparent by converting to PNG?
Not by converting — a JPG has no transparency information to recover. PNG can carry transparency, but creating it requires an editing tool that removes the background first.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.