PNG to JPG Converter — Free, Online, In-Browser

PNG to JPG: Why Your Transparent Image Gets a White Background

When you convert a PNG image to JPG, any transparent areas are replaced with a solid color—by default, white. This isn't a bug; it's a fundamental limit of JPEG. The format has no alpha channel, so every pixel must be opaque. The tool paints the background color first, then draws your image on top.

If you're converting a logo designed for a dark background, that white fill creates a harsh box. The fix: use Advanced options to set the background color to match where the image will appear on your website.

When PNG→JPG Makes Sense

Use this for photographs, screenshots of photos, and images with lots of color gradients. JPEG stores these far more compactly than PNG — often a small fraction of the size — with little visible loss. The default quality of 92 is visually lossless for photos; 75–85 is ideal for the web. JPEG's block-based compression excels when pixels vary widely.

When PNG→JPG Makes Things Worse

Don't convert logos, icons, flat-color graphics, or images with sharp text edges. JPEG's 8×8 pixel blocks blur sharp boundaries, making text and hard edges look fuzzy. In many cases the JPEG output is both uglier and larger than PNG. If your image relies on transparency, converting without setting the right background colour leaves it sitting on the wrong colour. See our JPG to PNG converter to add transparency back.

Quality Settings and Batch Processing

The quality slider ranges from 40 to 100. For photos, 90–95 is visually lossless; 75–85 is the usual choice for the web. The Advanced options panel lets you set background color, resize by maximum width (1920px by default), and add filename prefixes. Files process sequentially—if one fails, the rest continue. The tool reports original and new file size, highlighting in amber when output grew, a sign PNG was the better choice. For more on file size, see our image optimizer.