Is WebP better than PNG for website speed?

Usually yes. WebP often delivers smaller files than PNG while still supporting transparency, which makes it a strong choice for faster page loads.

Should I stop using PNG completely on websites?

Not necessarily. PNG is still useful as a source format or when you need exact lossless output, but WebP is often the better delivery format.

Can WebP replace PNG for transparent images?

In many cases yes. WebP supports transparency and can often reduce file size compared with PNG.

Guide

PNG vs WebP for site speed

If your goal is faster page loads, WebP is usually the better format. It often delivers smaller file sizes than PNG while still supporting transparency. PNG is still useful, but on most websites it should be the exception, not the default.

The quick answer

Choose WebP when

You care about smaller files and faster load times
You want transparency without keeping PNG-sized files
You are publishing images on a modern website
You are optimizing Core Web Vitals and mobile performance

Keep PNG when

You need exact lossless output for editing workflows
You are exporting raw UI assets or source graphics
You do not want any lossy compression at all
Your image pipeline still depends on PNG originals

Why WebP usually wins for website performance

Smaller image files generally download faster, render sooner, and reduce bandwidth. That is why WebP is so useful for websites. In many real-world cases, it can cut image weight enough to improve page speed without a visible drop in quality.

For transparent graphics, WebP can be especially helpful because it gives you transparency like PNG, but with better compression.

PNG vs WebP by feature

Feature	PNG	WebP
Transparency	Yes	Yes
Compression efficiency	Usually larger	Usually smaller
Lossless mode	Yes	Yes
Lossy mode	No	Yes
Best default for the web	Only in some cases	Usually yes

When PNG still makes sense

PNG is still useful as a source asset. Designers and developers often keep original logos, icons, screenshots, and interface graphics in PNG while exporting lighter delivery versions for the web. That can be a smart workflow: keep PNG internally, publish WebP externally.

A practical recommendation

Keep your master asset in PNG if you need editable lossless quality
Export WebP for production websites whenever possible
Use lossless WebP for graphics that need sharp edges
Use lossy WebP for photos and large visual content

Need smaller web images now?

Use the PNG to WebP tool to create web-friendly images without uploading anything to a server.

Open PNG to WebP Converter