🗜️ Image Compressor

Compress JPEG, PNG, and WebP images without visible quality loss. Reduce file size up to 90%. Free online image compressor — runs in browser, images never uploaded to any server.

Drop image here or click to upload

PNG, JPG, WebP supported

How to Use

Upload your image

Drag and drop a PNG, JPG, or WebP image onto the upload area, or click to browse your files.

Adjust quality and format

Use the quality slider (1–100) to balance file size vs. visual quality. Choose JPEG or WebP for best compression.

Download compressed image

See the before/after file size comparison. Click Download to save the compressed image to your device.

Frequently Asked Questions

How does browser-based image compression work? +

The tool uses the HTML5 Canvas API to re-encode your image at a lower quality level. The image is drawn onto a canvas element and exported as a JPEG or WebP at the quality you choose. This is the same technique used by many professional tools.

What image formats are supported? +

PNG, JPG/JPEG, and WebP files are supported as input. The output format can be JPEG or WebP, which offer the best compression ratios. PNG uses lossless compression so quality stays at 100%.

Is my image uploaded to a server? +

No. Your image never leaves your device. All compression happens entirely in your browser using the HTML5 Canvas API. This means your images are completely private.

What quality level should I use? +

For most web images, 75–85% quality is a good balance between file size and visual quality. At 80%, you typically get 60–80% smaller files with no visible quality loss to the human eye.

Why is my PNG not getting smaller? +

PNG uses lossless compression, so the quality slider does not apply. To significantly compress a PNG, convert it to JPEG or WebP format using the output format selector.

Guide : Compresseur d'Images

Qu'est-ce que c'est ?

Le Compresseur d'Images réduit la taille des fichiers PNG, JPG et WebP directement dans le navigateur, sans uploader vos images sur un serveur externe.

Des images optimisées accélèrent le chargement des pages, réduisent l'utilisation de la bande passante et améliorent les Core Web Vitals.

Comment utiliser

Glissez-déposez vos images ou cliquez pour les sélectionner.
Ajustez le niveau de qualité (80% est un bon équilibre qualité/taille).
Comparez l'aperçu avant/après.
Téléchargez les images compressées individuellement ou en ZIP.

Conseils professionnels

Visez des images <200KB pour les images de contenu, <50KB pour les miniatures.
Convertissez en WebP pour un meilleur rapport qualité/taille sur les navigateurs modernes.