Which direction do you need?
- PNG to JPG — makes a big PNG much smaller, ideal for photos and email. Use PNG to JPG. Note JPG can't store transparency, so transparent areas become a solid background.
- JPG to PNG — gives lossless quality and transparency support, useful for editing or graphics. Use JPG to PNG.
When to convert PNG to JPG
Screenshots and photos saved as PNG are often several megabytes. If the image is photographic and doesn't need transparency, converting to JPG can cut the size by 80% or more with no visible difference.
When to keep PNG
Logos, icons, diagrams and anything with a transparent background should stay PNG — JPG would add a background and blur the edges.
After converting
Shrink further with the Image Compressor.
Private
Conversion runs in your browser — your images are never uploaded.