Compresser des images
JPG, PNG, WebP, AVIF — choisissez le bon format et la bonne qualité avec un aperçu côte à côte en direct. Traitez n'importe quel nombre de fichiers en lot.
Déposez les images n'importe où sur la page
JPG, PNG, WebP, AVIF, GIF, BMP. Le glisser de dossiers et le collage fonctionnent aussi.
Aucun fichier pour l'instant
Les fichiers apparaissent ici après le dépôt.
Quel format utiliser ?
JPG — the universal photo format. Compatible with every device, every email client, every Office document. Use for photos when you don't need transparency.
PNG — lossless. Pick for screenshots, logos, illustrations, anything with sharp edges and text, or when you need transparency. Bigger files than JPG.
WebP — Google's modern format. Roughly 25–35% smaller than JPG at similar quality. Supported by every modern browser. A safe pick for websites; some older software still can't open it.
AVIF — newest format. About half the size of JPG at similar quality. Supported by all recent browsers (Chrome, Edge, Firefox, Safari 16.4+). Best for web images where filesize matters most.
Jusqu'où compresser ?
For most photos on the web, 80% quality is the sweet spot: indistinguishable from the original at normal viewing size, but about 40% smaller. Below 60% you start to see banding in skies and blurring of fine detail. PNG quality is locked at 100% because PNG is lossless.
F.A.Q.
Will my photos be uploaded?
No. Compression runs entirely in your browser using the standard canvas re-encoder. Photos stay on your device. Open the Network tab and watch — zero outgoing traffic while you work.
Does it strip EXIF metadata?
Yes — by default. Canvas-based re-encoding doesn't preserve EXIF, so GPS coordinates, camera serial, and timestamps are dropped. If you want to keep or edit metadata, use the dedicated EXIF tool instead.
Why does my "compressed" PNG sometimes get bigger?
PNG is lossless, so re-encoding doesn't reduce file size unless you also reduce dimensions or convert to a lossy format. If your original was already heavily optimized (e.g., processed by ImageOptim or TinyPNG), our browser-default PNG encoder may produce a slightly larger file. Switch to JPG or WebP to get meaningful size reduction.
What does "Keep original" format mean?
Each image keeps its original format on output — JPG stays JPG, PNG stays PNG, WebP stays WebP. Useful when you want to drop a mixed batch and compress them without converting formats.
What's the maximum image size?
No fixed cap. The hard limit is the browser's canvas size — roughly 16,384 × 16,384 pixels on most desktops, smaller on mobile. For photos from any modern camera (typically 20–60 megapixels) you're well within limits.