Quick verdict
- For web publishing (2026): WebP wins — smaller files, better quality, recommended by Google.
- For email, print, older software: JPG wins — universal compatibility that WebP still lacks in some contexts.
- Best approach: Use WebP for all web images; convert to JPG only when needed for specific compatibility requirements.
File size comparison: WebP vs JPG
This is the headline advantage of WebP and it's substantial. Switching from JPG to WebP can save approximately 30-35% in file size.
| Image Type | JPG Size (85) | WebP Size (80) | Savings |
|---|---|---|---|
| Portrait Photograph | 380 KB | 245 KB | 35% |
| Landscape Photo | 520 KB | 340 KB | 35% |
| Hero Banner | 640 KB | 415 KB | 35% |
Quality comparison: WebP vs JPG
WebP uses a more sophisticated compression algorithm. Even at small file sizes, it maintains cleaner edges and better gradients than JPEG.
- Less Artefacts: WebP avoids the "blocky" look of heavy JPEG compression.
- Transparency: Unlike JPG, WebP supports transparent backgrounds (like PNG).
Browser support in 2026
WebP has over 96% browser support in 2026. All major browsers support it natively.
<picture>
<source srcset="image.webp" type="image/webp">
<img src="image.jpg" alt="Description">
</picture>WebP vs JPG for SEO
WebP provides a significant SEO boost by improving:
- Core Web Vitals: Smaller images load faster, improving LCP scores.
- Page Load Speed: A direct Google ranking factor.
Convert JPG to WebP free — no upload
SwiftPix converts JPG to WebP entirely in your browser. Your files never leave your device.