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What Is WebP and Why Should You Use It?

If you run a website, you have probably seen WebP mentioned in speed optimization guides, PageSpeed Insights recommendations, or hosting dashboards. But what exactly is it, and is it worth the effort of switching from JPEG and PNG?

Short answer: yes, probably. Here is the long answer.

A quick history

Google created WebP back in 2010. The idea was simple - make images smaller without making them look worse. JPEG was nearly 30 years old at that point, and compression technology had improved a lot since the early 1990s.

WebP uses modern compression algorithms that are significantly more efficient than what JPEG and PNG use. The same image, at the same visual quality, is typically 25-35% smaller in WebP format. For a website serving thousands of images, that adds up to real savings in bandwidth and loading time.

What makes it better

Smaller files with the same quality. This is the main selling point. A WebP photo at equivalent visual quality is roughly 30% smaller than JPEG. For lossless images (think PNG replacements), WebP is about 26% smaller.

Supports transparency. Unlike JPEG, WebP handles alpha channels for transparent backgrounds. And unlike PNG, it does this at a fraction of the file size. If you have product images with transparent backgrounds, WebP is perfect.

Supports animation. WebP can replace animated GIFs too. A WebP animation is dramatically smaller than an equivalent GIF - often 50-80% smaller.

So you get the best features of both JPEG (lossy compression for photos) and PNG (transparency, lossless mode) in a single, more efficient format.

Browser support in 2026

This used to be the main argument against WebP. When Google first released it, only Chrome supported it. But those days are long gone.

Today, WebP is supported by Chrome, Firefox, Safari, Edge, and every major mobile browser. Global support is over 97%. Unless you are specifically targeting Internet Explorer users (and you should not be), WebP works everywhere your users are.

The impact on page speed

Google uses page loading speed as a ranking factor. Images are usually the heaviest part of any webpage. Cutting image sizes by 30% can meaningfully improve your Core Web Vitals scores.

For a typical blog or e-commerce site, switching from JPEG to WebP can shave 1-3 seconds off load times on mobile connections. That is the difference between someone waiting for your page and hitting the back button.

If you have ever run a Lighthouse audit and seen "Serve images in next-gen formats" as a recommendation, this is exactly what it means - use WebP instead of JPEG and PNG.

When not to use WebP

WebP is not perfect for every situation.

  • Print workflows. If your images will be printed, stick with TIFF or high-quality JPEG. Print software sometimes has limited WebP support.
  • Archival purposes. For long-term storage of important photos, lossless formats like PNG or TIFF are safer bets. WebP is great for delivery, not necessarily for archival.
  • Social media uploads. Most social platforms will re-encode your image anyway. Uploading a WebP might trigger an extra conversion step that slightly degrades quality. For social sharing, high-quality JPEG is still the safe choice.

How to convert your images

If you already have images in JPEG or PNG format, converting them to WebP is straightforward. You do not need to re-shoot anything or install specialized software.

PrivConvert supports multiple conversion paths: any image to WebP, WebP to JPG (for when you need to go back), and PNG to WebP for lossless-to-lossy conversion.

Drop your files, get WebP back. Everything is processed in memory - your images never touch a hard drive. You can batch convert up to 20 files at a time if you have a lot to process.

The practical approach

You do not have to convert your entire image library overnight. A good starting point:

  • New images first. Start saving new images as WebP going forward.
  • High-traffic pages. Convert images on your homepage, landing pages, and most-visited blog posts first. This gives you the biggest speed improvement with the least effort.
  • Use fallbacks. If you are paranoid about the 3% of browsers that do not support WebP, use the HTML <picture> element to serve WebP with a JPEG fallback.

The web is moving toward more efficient formats. WebP is the practical choice right now - widely supported, measurably smaller, and easy to adopt. Your users get faster pages, you get lower hosting bills, and search engines reward you with better rankings.

Convert images to WebP