PNG, short for Portable Network Graphics, is a popular and high-quality graphic file format. The PNG format is lossless and supports transparency.

To convert a PNG file to JPG in Windows, open the image in Paint and select File > Save as, then choose JPEG. On a Mac, open the image in Preview and select File > Export, then choose JPEG.

For example, you can open WebP images in Paint by following these steps. One of the pre-installed programs in the Windows 11 Start menu is Paint. Open the Paint app from there, and then click File.

If you want JPG, PDF, PNG, MP4, MP3, and other file types to always open with a particular program or app, then you can set or change file associations using the Settings app, File Type Properties ...

You can open PNG files with a variety of programs. For example, with the Windows Photo Viewer or with the Windows Paint program, but also with image editing programs such as Paint.net, Gimp, or ...