How do I convert JPG to PNG?

Drop your JPG file onto this page and the PNG version is produced immediately, in your browser. There is no upload, no queue and no account — the conversion runs on your own device using the canvas API.

Does converting JPG to PNG lose quality?

PNG is lossless, so nothing further is discarded during the conversion itself. Anything already lost by JPG's own compression cannot be recovered.

Is my JPG file uploaded to a server?

No. The file is read by your browser, decoded and re-encoded on your device, and handed straight back. Nothing is transmitted, which matters when the image is a document, a screenshot of something private, or a photograph with location data in it.

Why would I convert JPG to PNG?

Lossless, with full alpha transparency. Perfect for screenshots, logos, diagrams and anything with hard edges or flat colour. That is usually the reason. No transparency at all, and it puts visible halos around hard edges — which makes it the wrong choice for text, logos and screenshots.

JPG to PNG

Convert JPG to PNG in your browser. Free, no upload, no signup.

ImageRuns in your browserFree, no signup

About the JPG to PNG

JPG is JPEG. Built for photographs. Its compression discards detail the eye is least sensitive to, so a photo can drop by 90% with no visible change. No transparency at all, and it puts visible halos around hard edges — which makes it the wrong choice for text, logos and screenshots.

PNG is Portable Network Graphics. Lossless, with full alpha transparency. Perfect for screenshots, logos, diagrams and anything with hard edges or flat colour. Large for photographs — it stores every pixel exactly, and a photograph has no repeating detail to compress.

What changes in this conversion: Converting to PNG cannot restore what JPG already discarded. The file will get larger without getting better — the compression artefacts are stored losslessly along with everything else.

The whole conversion happens on a canvas in your own browser. The file is read from disk with the File API, decoded, redrawn and re-encoded locally, so it is never uploaded and there is no size limit beyond your device's memory.

How it works

Drop in a JPG file — it is read by your browser, not uploaded.
It is decoded and re-encoded as PNG on your own device.
Download the result. Nothing is stored anywhere.

Frequently asked questions

How do I convert JPG to PNG?: Drop your JPG file onto this page and the PNG version is produced immediately, in your browser. There is no upload, no queue and no account — the conversion runs on your own device using the canvas API.
Does converting JPG to PNG lose quality?: PNG is lossless, so nothing further is discarded during the conversion itself. Anything already lost by JPG's own compression cannot be recovered.
Is my JPG file uploaded to a server?: No. The file is read by your browser, decoded and re-encoded on your device, and handed straight back. Nothing is transmitted, which matters when the image is a document, a screenshot of something private, or a photograph with location data in it.
Why would I convert JPG to PNG?: Lossless, with full alpha transparency. Perfect for screenshots, logos, diagrams and anything with hard edges or flat colour. That is usually the reason. No transparency at all, and it puts visible halos around hard edges — which makes it the wrong choice for text, logos and screenshots.

Privacy

Everything happens locally. Your files are read by your own browser, processed on your device, and never uploaded — closing the tab is all it takes to erase them.

JPG to PNG

About the JPG to PNG

How it works

Frequently asked questions

Privacy

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