Conversion de format
Convertissez entre les formats JPG, PNG, WebP, AVIF, GIF, BMP. Conversion par lots avec contrôle qualité. Traitement local.
Glissez-déposez les images ici
ou cliquez pour parcourir. Prend en charge JPG, PNG, WebP, AVIF, GIF, BMP, TIFF
Questions fréquentes
Comment ça marche
Cet outil fonctionne entièrement dans votre navigateur. Ajoutez des images, sélectionnez un format cible et cliquez sur convertir.
Format Conversion Guide
JPEG
JPEG is the most widely supported image format, ideal for photographs and complex images. Converting to JPEG uses lossy compression — adjust the quality slider to balance file size and visual fidelity. JPEG does not support transparency. For web use, consider converting to WebP for smaller file sizes at similar quality.
PNG
PNG uses lossless compression and supports full transparency, making it perfect for logos, icons, screenshots, and graphics with text. Converting to PNG preserves all detail from the source image. PNG files are typically larger than JPEG or WebP — use it when quality and transparency are priorities over file size.
WebP
WebP is a modern format developed by Google that supports both lossy and lossless compression, as well as transparency. WebP files are typically 25-35% smaller than equivalent JPEG or PNG images. It is supported by all modern browsers and is an excellent choice for web use.
AVIF
AVIF is a next-generation image format offering superior compression efficiency. It supports HDR, transparency, and both lossy and lossless modes. AVIF files are often 50% smaller than JPEG at equivalent quality. Browser support is growing rapidly, making it a future-proof choice for web images.
BMP
BMP is an uncompressed raster image format that stores pixel data without quality loss. BMP files are very large compared to modern formats. Use BMP conversion primarily when you need a simple, uncompressed format for legacy applications or specific software requirements.
GIF
GIF is a palette-based format limited to 256 colors, best suited for simple graphics and animations. Static GIF conversion uses PNG encoding as a fallback since browsers do not natively support GIF encoding. For animated content, consider converting to animated WebP for better compression and quality.
Confidentialité & sécurité
Tout le traitement est local. Aucun téléchargement, aucune collecte de données. Métadonnées automatiquement supprimées.
Gratuit & illimité
Aucune inscription. Pas de limites. Convertissez gratuitement autant d'images que vous le souhaitez.