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What is WebP and Why Should You Use It in 2026?

WebP reduces image sizes by 25-34% vs JPEG with no visible quality loss. Learn what WebP is, how it works, browser support, and how to start using it.

Cristian Peña5 min read
WebPImage FormatsPerformanceBrowser Support

WebP in one sentence

WebP is an image format created by Google that produces files 25-34% smaller than JPEG and 26% smaller than PNG at equivalent visual quality, with support for transparency and animation.

As of 2026, WebP has over 97% global browser support. The compatibility debate is over — you can use it as your primary web image format.

How WebP achieves smaller files

WebP uses techniques borrowed from the VP8 video codec (the same technology behind WebM video). It works in two modes:

Lossy mode uses predictive coding — it predicts what each block of pixels will look like based on surrounding blocks, then only stores the difference. This is similar to how video compression stores only what changes between frames. The result: much less data to store, with minimal visible difference.

For detailed technical information about WebP compression algorithms, see Google's WebP documentation.

Lossless mode uses a combination of transform coding, entropy coding, and a color cache. It achieves about 26% better compression than PNG by finding and exploiting patterns in the image data more efficiently.

Alpha channel (transparency) can be lossy or lossless, independent of the main image. This means you can have a lossy-compressed photo with a perfectly crisp transparent edge — something PNG can't do efficiently.

The real-world numbers

For a typical 1200×800 photograph:

These aren't theoretical — they're typical results from processing real-world images. The savings are consistent across different types of content.

Browser support in 2026

WebP is supported in every major browser:

  • Chrome — since version 23 (2012)
  • Firefox — since version 65 (2019)
  • Safari — since version 14 (2020)
  • Edge — since version 18 (2018)
  • Mobile Safari — since iOS 14 (2020)

The only browser that never supported WebP was Internet Explorer, which Microsoft discontinued in 2022. At 97%+ global coverage, WebP is as safe to use as CSS Grid or ES6.

How to use WebP on your website

The simple way — just use WebP directly

<img src="/photo.webp" alt="A beautiful landscape" width="1200" height="800" />

With 97%+ support, you can serve WebP directly without fallbacks for most audiences.

With a fallback for edge cases

If you need to support the remaining 3%, use the <picture> element:

<picture>
  <source srcset="/photo.webp" type="image/webp" />
  <img src="/photo.jpg" alt="A beautiful landscape" width="1200" height="800" />
</picture>

The browser picks the first format it supports. Modern browsers get WebP; the rare older browser gets JPEG.

In Next.js (automatic)

If you're using Next.js, the <Image> component handles WebP conversion automatically:

import Image from "next/image";

<Image src="/photo.jpg" alt="Landscape" width={1200} height={800} />
// Next.js serves WebP (or AVIF) automatically based on browser support

Quality settings guide

WebP quality ranges from 0 to 100, but the scale isn't linear:

  • 75-85 — Best balance for most web images. Visually indistinguishable from the original at a fraction of the file size. Start here.
  • 60-74 — Good for thumbnails and images that don't need to be pixel-perfect.
  • 86-95 — Diminishing returns. File sizes increase significantly with minimal visual improvement.
  • 100 — Near-lossless. Rarely worth it for web delivery.

Quality 80 is the sweet spot for most photographs. At this setting, you get roughly 30% smaller files than JPEG at quality 80, with no perceptible difference. If you can tell the difference, try 85.

What about AVIF?

AVIF is a newer format that offers even better compression than WebP — roughly 20% smaller at equivalent quality. However, it has tradeoffs:

  • Encoding is significantly slower (10-20x slower than WebP)
  • Browser support is lower (~92% globally, with gaps on older iOS)
  • Tooling support is still maturing

For 2026, WebP is the pragmatic choice for most websites. AVIF is worth adopting if you're using a build pipeline that can handle the slower encoding and your audience is on modern browsers.

Converting your images to WebP

In the browser

Pikkx lets you convert JPEG and PNG images to WebP directly in your browser. Drag your files in, select WebP as the output format, adjust quality, and download. Your images are processed locally — nothing is uploaded.

From the command line

# Single file
cwebp input.jpg -o output.webp -q 80

# Batch convert
for f in *.jpg *.png; do
  cwebp "$f" -o "${f%.*}.webp" -q 80
done

In a Node.js build pipeline

import sharp from "sharp";

await sharp("input.jpg")
  .webp({ quality: 80 })
  .toFile("output.webp");

For more examples of using images on the web, see the MDN Web Docs image guide.

Start using WebP today

There's no reason to delay. WebP has universal browser support, produces significantly smaller files, and every major tool and framework supports it. Switch your image pipeline to WebP and your pages will load faster with zero visual compromise.

Convert images to WebP instantly

Drop your JPEG and PNG files in and get optimized WebP images — free, private, in your browser.

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