JPG to PNG Converter - Free, No Upload
Convert a JPG image to PNG entirely in your browser - useful when a tool downstream needs a lossless format or you want to layer edits without repeated compression loss.
Maintained by Hirantha Sandaruwan Lakshan. Updated 31 July 2026.
How it works
The JPEG is decoded and drawn to an off-screen canvas, then re-encoded as PNG - a lossless format, so no further quality is lost in the conversion itself.
The output will usually be larger than the source JPG, since PNG stores every pixel exactly rather than throwing away detail the way JPEG does.
Because PNG supports transparency, the result gets an alpha channel even though a JPEG source never had one - it just isn't used since nothing in the source was transparent.
Worked examples
Preparing an image for further editing
Converting to PNG before making further edits in another tool avoids adding a second round of JPEG compression artifacts on top of the first.
A photo for a tool that requires PNG
Some upload forms and design tools only accept PNG - convert once here rather than installing separate software.
Archiving a JPG losslessly
PNG re-encoding won't undo JPEG artifacts already baked into the source, but it stops any further quality loss from happening in future edits.
Frequently asked questions
Will converting to PNG restore quality lost in the original JPG?
No - JPEG compression artifacts already in the source are permanent. PNG just stops any further loss from future re-saves.
Why is the PNG file bigger than the JPG?
PNG is lossless, so it stores full pixel detail rather than compressing it away like JPEG does.
Is my image uploaded anywhere?
No, everything runs locally in your browser tab.
Can I convert a batch of JPGs at once?
Yes, drop in multiple files and they'll all convert together.
Does the PNG get transparency if the JPG had none?
No. JPEG can't store transparency, so there's nothing to recover - the PNG will be fully opaque. You'd need to remove the background separately.
When should I use PNG over JPG?
PNG for screenshots, logos, diagrams, and anything with text or hard edges. JPG for photographs. PNG keeps edges crisp; JPEG blurs them slightly but produces much smaller photos.
Does converting change the image dimensions?
No, the pixel dimensions are identical. Only the encoding changes.
Is PNG lossless?
Yes. PNG stores every pixel exactly, so converting to PNG never degrades the image further - though it also can't undo the JPEG compression already baked in.
Does this work on my phone?
Yes - it runs in your phone's browser exactly like on a computer, with no app to install.
Sources & references
Updated Jul 31, 2026