Redimensionneur d'Images

What is Image Resizer?

Image Resizer changes the width and height of images directly in your browser. You can lock the aspect ratio so the image is not distorted, or set custom dimensions. The resized image can be downloaded in JPEG, PNG, or WebP format.

How to use

1. Click Choose Image and select an image file.
2. Enter the desired width or height. Enable Lock aspect ratio to auto-calculate the other dimension.
3. Click Resize and download the result.

Notes

• Upscaling (making an image larger than its original size) will reduce sharpness since new pixels are interpolated.
• All resizing is done in your browser using the Canvas API  Eimages are never uploaded.
• For web optimization, combine resizing with the Image Compressor to reduce both dimensions and file size.

FAQ

What does locking the aspect ratio do?

When the aspect ratio is locked, changing one dimension automatically scales the other proportionally. This prevents distortion  Euseful for profile photos, icons, and product images.

What format should I download?

Use JPEG for photos, PNG for images with transparency, and WebP for the best balance of size and quality in modern browsers.

Can I resize animated GIFs?

No. The Canvas API does not support animated GIFs  Eonly the first frame will be processed and exported as a static image.