🖼️ Image Resizer

Change the dimensions of an image without uploading it. Everything is processed on your device.

Your image stays on your device. It is never uploaded.

How to use the Image Resizer

  1. Choose a JPEG, PNG or WebP image.
  2. Enter a new width or height. Keep aspect ratio is on by default.
  3. Choose a format and select Resize image.
  4. Check the preview and file size, then download.

Examples

  • 1920 × 1080 resized to 800 px wide becomes 800 × 450.

Formula and method

With aspect ratio locked, new height = original height × new width ÷ original width, rounded to the nearest pixel. The image is redrawn on a canvas at the new size. JPEG and WebP use 92% quality.

Frequently asked questions

Why is the file larger after resizing?

Format and compression affect size. Try JPEG or WebP for photos.

Which formats are supported?

JPEG and PNG everywhere. WebP export depends on your browser.

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Helpful guides

How to Resize Images Without Stretching Them · Browse all guides