What does a JPG to PNG converter do?
A JPG to PNG converter creates a PNG copy of a JPEG image. Both formats are widely used, but they suit different types of pictures. JPG is popular for photographs because it uses lossy compression. PNG is commonly used for screenshots, icons, diagrams and graphics because it stores image data losslessly and supports transparency when an image already has it.
Upload a JPG or JPEG file to create a PNG with the same pixel width and height. The conversion happens in your browser, and the original file remains unchanged on your device. When the PNG is ready, you can preview it and download the separate output file.
How to convert JPG to PNG
- Choose a JPG or JPEG image from your device.
- Check the preview, dimensions and original file size.
- Select Convert to PNG.
- Review the new PNG file and download it.
No image is sent to a server. The browser reads the picture, draws it on a local canvas and writes a PNG copy for download. This can be convenient for private photos, scans and client assets where you do not want to use an upload-based service.
What changes when you use PNG?
The visual pixels and dimensions are carried into the PNG output, but converting cannot restore detail that was removed when the JPG was originally compressed. A JPG also has no transparent pixels, so converting it to PNG does not create a transparent background. PNG can still be the right format when a design tool or website specifically requires it, or when you plan to add editing steps that benefit from lossless saves.
PNG files are often larger than their JPG counterparts, especially for photographs. That is normal: photographic JPG compression is designed to reduce file size. For a photo that needs to stay small, consider keeping the JPG or using WebP. For text-heavy graphics, screenshots and simple illustrations, PNG can retain crisp edges without the blocky artifacts sometimes seen in heavily compressed JPGs.
When should I convert JPG to PNG?
Convert when a submission form asks for PNG, when a workflow needs a PNG asset, or when you want to avoid another lossy re-save during editing. Keep your original JPG as well. Format conversion gives you a different container for the same image; it does not improve resolution or add alpha transparency.