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5 min read
June 4, 2026

What Is WebP? A Simple Guide to the Format That Makes Images Smaller

WebP makes your images load faster without looking any different. Here is what it is, why it matters, and how to use it even if you have never heard of it before.

Imagine a Magic Shrinking Machine for Images

You have a photo that is 1MB. You run it through the magic machine. It comes out looking exactly the same — but now it is only 650KB. That machine is called WebP.

WebP is an image format created by Google. It was designed for one purpose: to make images on the internet load faster without looking worse. It does this by using smarter compression than older formats like JPG and PNG.

How Much Smaller Does WebP Make Images?

Original FormatOriginal SizeWebP SizeSaved
JPG photo500 KB330 KB34%
PNG logo200 KB130 KB35%
JPG product photo1.2 MB820 KB32%

On average, WebP images are about 25 to 35% smaller than JPG at the same visual quality. For a website with 50 images, that can mean several megabytes less data for every visitor — which makes pages load much faster.

Does WebP Work in All Browsers?

Yes. As of 2024, WebP works in every major browser — Chrome, Firefox, Safari, Edge, and Opera. Over 97% of all internet users can view WebP images. This was not always true (Safari only added support in 2020), but it is not a concern anymore.

Does WebP Support Transparency?

Yes — and this is one big advantage over JPG. WebP can do everything JPG does AND everything PNG does:

  • ✅ Photographs (like JPG)
  • ✅ Transparent backgrounds (like PNG)
  • ✅ Smaller file size than both
  • Who Should Use WebP?

  • Website owners who want faster loading pages and better Google rankings
  • Developers building apps or websites where file size matters
  • Bloggers who upload lots of photos and want to save storage
  • E-commerce shops where product page speed directly affects sales
  • If you are still using JPG for every image on your website, switching to WebP is one of the easiest performance improvements you can make.

    How to Convert Images to WebP for Free

    Use our WebP Converter:

  • Open the tool and upload your JPG or PNG image
  • The WebP version is automatically created
  • Download it and use it anywhere
  • No software. No signup. No cost. The conversion runs right inside your browser — your image never gets uploaded to any server.

    If you want to also reduce the file size further, try the Image Compressor before or after converting.

    Written by the GMC Tools team