JPG vs PNG vs WEBP: What’s the Difference?
A clear, practical guide to the three most common web image formats — JPG, PNG and WEBP — and when to use each one.
If you work with images on the web, you have certainly run into JPG, PNG and WEBP. They look similar when opened, but under the hood they make very different trade-offs between file size, quality and features. Choosing the right one can dramatically affect how fast your pages load and how good your images look.
JPG: small files for photographs
JPG (also written JPEG) uses lossy compression, which means it permanently discards some image data to shrink the file. For photographs with smooth gradients and millions of colors, this works remarkably well: you can cut the file size by 80–90% with little visible difference. The downside is that JPG does not support transparency, and repeated saving slowly degrades quality. JPG is the right choice for photos, product images and any rich, colorful picture where small file size matters.
PNG: lossless quality and transparency
PNG is a lossless format, so it preserves every pixel exactly. It also supports a full alpha channel for smooth transparency. This makes PNG ideal for logos, icons, screenshots, line art and any graphic with sharp edges or text — exactly the content where JPG produces ugly artifacts. The trade-off is file size: a photographic PNG can be several times larger than the equivalent JPG.
WEBP: the modern all-rounder
WEBP, developed by Google, is a modern format that supports both lossy and lossless compression as well as transparency and even animation. At the same visual quality, WEBP files are typically 25–35% smaller than JPG and far smaller than PNG. Every modern browser now supports it, which makes WEBP the best default for web images when you care about performance.
Which should you use?
- Photographs for the web: WEBP first, JPG as a fallback.
- Logos, icons and graphics with transparency: PNG, or lossless WEBP.
- Maximum compatibility (email, old software): JPG or PNG.
- Smallest possible web pages: WEBP everywhere it is supported.
The good news is that switching between them is instant and free. You can convert your images right in your browser without uploading anything.