WebP vs JPEG/PNG/GIF - Comparaison de performance et taille
Comparaisons visuelles et données illustrant les gains de compression WebP.
Comparaisons typiques
JPG
-42%
JPEG 1200×800 / qualité 85
1920×1080 resolution, quality 85
Original
1.2 MB
WebP
700 KB
PNG
-61%
PNG 800×600
Complex gradients & transparency
Original
980 KB
WebP
380 KB
GIF
-44%
GIF 640×360
Short video converted to animation
Original
1.6 MB
WebP
900 KB
Impact on Core Web Vitals
LCP (Largest Contentful Paint)
Smaller image sizes mean faster loading times, significantly improving LCP scores.
CLS (Cumulative Layout Shift)
Fast-loading WebP images with explicit dimensions help minimize layout shifts.
Tableau de données
| Format | Original | WebP | Gain |
|---|---|---|---|
| JPEG (Q85) | 1.2 MB | 700 KB | 42% |
| PNG (Transparent) | 980 KB | 380 KB | 61% |
| GIF (Animated) | 1.6 MB | 900 KB | 44% |
| PNG (Icon) | 45 KB | 12 KB | 73% |
Valeurs indicatives ; les résultats réels varient selon l’image.
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