What Is WebP and Why Is It Used for Websites?

WebP is an image format designed for the web. Sites use it to deliver photographs and graphics at smaller file sizes than classic JPG or PNG in many cases, which can help pages load faster on limited connections.

Lossy and lossless

WebP can store lossy images (similar idea to JPG: some detail is traded for size) and lossless images (pixels preserved). Photographers and web teams usually use lossy WebP for photos and may use lossless for simple graphics when exact pixels matter.

Transparency

Unlike JPG, WebP can include an alpha channel. That makes it a practical replacement for many transparent PNGs on websites.

Convert PNG to WebP

Why websites use WebP

• Smaller assets reduce bandwidth and can improve load time.
• One format can cover photos and many transparent graphics.
• Current browsers support WebP widely for web delivery.

Some email clients, older apps, or print workflows still expect JPG or PNG. Convert back when needed with WebP to JPG or WebP to PNG.

Converting existing photos

If you already have JPG files, converting to WebP is a common first optimization step. Adjust quality and, if needed, dimensions. Compare before and after rather than assuming a fixed percentage savings.

Convert JPG to WebP