WebP and JPG are the two most common image formats on the web. WebP is the newer, more efficient format — but JPG still dominates in compatibility. Here's how they compare across every dimension that matters.
| Aspect | WebP | JPG |
|---|---|---|
| Created | 2010 (Google) | 1992 (JPEG Group) |
| Compression | Lossy + Lossless | Lossy only |
| Transparency | ✅ Alpha channel | ❌ |
| Animation | ✅ | ❌ |
| File size (same quality) | 25-35% smaller | Baseline |
| Browser support | ~97% | 100% |
| Desktop app support | Limited | Universal |
| Max color depth | 24-bit | 24-bit |
WebP is the better technical format in nearly every measurable way. For websites, WebP images load faster (smaller files), consume less bandwidth, and improve Core Web Vitals scores — which directly impacts Google rankings. WebP also supports transparency, which JPG cannot do at all. If you need a transparent image, JPG is simply not an option — you need WebP or PNG.
JPG's one overwhelming advantage is compatibility. Every device, every operating system, every application since the 1990s can open JPG files. You never have to worry about whether someone can open a JPG — they can. This makes JPG the safer choice for email attachments, document embedding, client delivery, and any scenario where the recipient's technical setup is unknown.