PNG vs JPEG: When to Use Each Format

PNG and JPEG are the two oldest and most widely supported image formats on the web. Yet they solve different problems. Understanding when to use each is essential for web performance and user experience.

JPEG: The Compression King

JPEG uses lossy compression to dramatically reduce file size. A photograph saved as JPEG is typically 5–10 times smaller than PNG at acceptable quality levels. JPEG excels at photographs and complex imagery.

PNG: The Transparency Champion

PNG stores images losslessly, preserving every pixel perfectly. It supports full alpha-channel transparency and is ideal for graphics, logos, icons, and images where quality must be preserved exactly.

File Size Comparison

A typical photograph: JPEG 40KB vs PNG 300KB. A logo with transparency: PNG 15KB vs JPEG 20KB (no transparency). For photographic content, JPEG wins decisively.

Quality Considerations

JPEG compression introduces visible artifacts in text and sharp edges. PNG avoids this but cannot compress photographs efficiently. Choose based on content type, not format preference.

Modern Recommendations

Serve AVIF and WebP to modern browsers, JPEG for photographs on older browsers, and PNG only when transparency is essential. Use QuickConvert's free converter to experiment with both.