WebP vs PNG vs JPG: Choosing the Right Image Format

A clear comparison of the three most common image formats and when to use each to cut file size without losing quality.

Picking an image format directly affects your site speed and design quality. Here are the differences, without the jargon.

JPG — for photographs

The oldest and most widely supported. It uses lossy compression, discarding detail your eye won't notice to shrink the file.

• ✅ Excellent for realistic photos, landscapes and faces.
• ✅ Small size, universal support.
• ❌ No transparency at all.
• ❌ Loses quality every time you re-save.

PNG — for transparency and sharpness

Lossless compression that preserves every pixel exactly.

• ✅ Supports transparency — essential for logos and icons.
• ✅ Crisp edges, ideal for text, screenshots and graphics.
• ❌ Very large files for photographs.

WebP — the modern choice

Developed by Google to combine both. It supports lossy and lossless compression plus transparency.

• ✅ Roughly 25–35% smaller than JPG at similar quality.
• ✅ Far smaller than PNG while keeping transparency.
• ✅ Supported in every modern browser.
• ❌ Very old software may not open it.

Practical summary

What quality level should you use?

When compressing, a quality value of 80 is the sweet spot in most cases: large size savings with a barely noticeable visual difference. Drop to 60–70 for large background images, and raise to 90 for images needing fine detail.

Why file size matters

Images often make up more than half a web page's weight. Cutting them by 30% means faster loading, a better visitor experience, and better Google rankings — page speed is a stated ranking factor.