How to convert JPG to PNG
Add one or more JPG files, pick a quality level if the option is shown, and press Convert. Each image is decoded, redrawn on a canvas and saved again in the PNG format. Converting several files at once is supported, and the results can be downloaded together as a ZIP archive.
JPG and PNG compared
JPG (also written JPEG) is the oldest widely supported photo format. It uses lossy compression, which keeps photographs small but discards some detail every time the file is saved. It works best for photographs, scanned pictures and any image with soft gradients, and is a weaker choice for flat graphics, screenshots with text and anything that needs a transparent background.
PNG stores images without losing a single pixel and supports a full alpha channel, so transparent areas stay transparent. It is the better fit for logos, icons, screenshots, line art and images that need transparency, while it is less suitable for large photographs, where the file size grows quickly.
Converting to PNG does not create transparency
PNG supports an alpha channel, but a JPG source has no transparent pixels to carry over. The converted file keeps the same solid background it had before; removing a background is a separate editing step.
Nothing is thrown away
PNG stores the image without discarding detail, so the result is pixel-for-pixel what came out of the decoder. Be aware that a lossless format cannot restore detail that was already lost in the source file.
What to check after converting
- Open the result at full size and look at edges, text and flat colour areas first — that is where compression artefacts appear.
- Compare the file size against the original. If a PNG file is larger than the JPG source, lower the quality slider or reconsider the format.
- Check that the image dimensions are unchanged. Conversion never resizes an image; use the resizer tools for that.
Format support in browsers
Saving files relies on the image encoders built into your browser. PNG, JPG and WebP are available almost everywhere. AVIF encoding is only present in some recent browsers, and the tool will tell you clearly when the format you picked cannot be written on the device you are using, rather than producing a broken file.