JPG to PNG Converter
Convert JPG images to lossless PNG in your browser. No upload, no sign-up — the file never leaves your device.
Your files never leave your device. All processing happens in your browser.
How to Convert JPG to PNG
- Add your JPG. Drag the file onto the upload area or click to browse. The file is read directly in your browser — nothing is uploaded.
- Review the conversion summary. The banner shows the original JPG size vs the PNG size and whether the PNG is larger (it usually will be — PNG is lossless).
- Download. Click Download PNG to save the converted file.
JPG vs PNG: Key Differences
| Property | JPG | PNG |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | No | Yes (alpha channel) |
| Best for | Photos, gradients | Screenshots, logos, UI |
| File size | Small | Larger for photos |
| Re-save quality loss | Yes — artefacts accumulate | No — pixel-perfect each time |
Frequently Asked Questions
Why convert JPG to PNG?
The most common reasons are: (1) you need to use the image in a design tool that works better with PNG, (2) you want to overlay the image on a coloured background without a white rectangle around it — though note that because JPG has no transparency, you will need to remove the background in a separate step, or (3) you are preparing an image for further editing and want to avoid re-compression artefacts each time you save.
Does converting JPG to PNG improve quality?
No. The JPG artefacts are "frozen" into the PNG. The result is a lossless copy of the already-compressed JPG — PNG cannot recover detail that JPG discarded. If quality matters, go back to the original uncompressed source.
Why is the PNG file larger than the JPG?
PNG is a lossless format — it stores every pixel exactly. JPG achieves its small file size by permanently discarding some visual information. A PNG copy of a JPG is always larger because it stores all those pixels without lossy compression.
Are my files uploaded to a server?
No. The conversion happens entirely in your browser using the Canvas API. Nothing is sent anywhere.
Can I convert multiple JPGs at once?
Not on this page — it handles one file at a time for a clean side-by-side preview. For batch format conversion, the Bulk Image Resizer lets you process many files and change their format in one go.
Related Tools
- PNG to JPG → Convert PNG to smaller JPG with background colour selection.
- WebP to JPG →
- Image Compressor → Reduce PNG file size after converting.
- Browse all tools →