Difference between JPEG and PNG

JPEG and PNG are two widely used image file formats. JPEG uses a lossy compression algorithm, which reduces file size by discarding some image data. PNG uses a lossless compression algorithm, preserving all original image data without any quality loss.

JPEG (Joint Photographic Experts Group)

JPEG is best suited for photographs and images with smooth color gradients. It achieves smaller file sizes by discarding image data that the human eye is less likely to notice. The compression level is adjustable − higher compression means smaller files but more quality loss. JPEG does not support transparency.

PNG (Portable Network Graphics)

PNG is best suited for images that require sharp edges, text, transparency, or lossless quality. It preserves every pixel exactly as the original, resulting in larger file sizes compared to JPEG. PNG supports alpha transparency (partial and full transparency), making it ideal for logos, icons, and web graphics.

Key Differences

Conclusion

Use JPEG for photographs and web images where smaller file size matters more than perfect quality. Use PNG when you need lossless quality, transparency, or sharp edges such as in logos, icons, and screenshots.