JPG to PNG Converter
Convert JPG to PNG and PNG to JPG online, free. Conversion happens in your browser — your image is never uploaded to a server.
- ✓ Runs in your browser — nothing uploaded
- ✓ No sign-up
- ✓ Free, no limits
This free converter changes JPG images to PNG and PNG images to JPG, both directions, without uploading anything. Pick the target format, choose an image, and download the converted file a moment later — the whole conversion runs on the HTML canvas inside your own browser, so the picture never leaves your device.
The two formats serve different jobs, which is why you convert between them. PNG is lossless and supports transparency, so it is right for logos, screenshots, diagrams and anything with sharp edges or a transparent background. JPG uses lossy compression that makes photographs much smaller, which is better for sharing or uploading photos where a tiny quality loss is invisible. When converting a transparent PNG to JPG, the transparent areas are filled with white, since JPG cannot store transparency.
Because it is client-side, it works offline once loaded, has no file-size cap beyond your device's memory, adds no watermark, and needs no signup — unlike the many converter sites that upload your image to their servers. Worked example: a 2 MB photo.jpg converted to PNG downloads as photo.png, ready to drop into a document or design tool.
Frequently asked questions
Should I use PNG or JPG?
Use PNG for logos, screenshots, diagrams and anything needing transparency or crisp edges; use JPG for photographs where a smaller file matters more than perfect fidelity.
What happens to transparency when converting PNG to JPG?
JPG cannot store transparency, so transparent areas are filled with a white background during conversion. Convert to PNG instead if you need to keep transparency.
Is my image uploaded anywhere?
No. The conversion runs on your browser's canvas and the image is never sent to a server — you can disconnect from the internet after the page loads and it still works.