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Image Resizer

Resize images to exact pixel dimensions or by percentage in your browser. Maintain aspect ratio or set custom width and height.

Used 5.6K times today

Image Resizer

How to Use Image Resizer

  1. 1

    Upload your image

    Drop an image file onto the upload area or click to browse your device.

  2. 2

    Set new dimensions

    Enter the target width and height in pixels, or enter a percentage to scale proportionally.

  3. 3

    Download the resized image

    Click "Resize & Download" to get your resized image file instantly.

Frequently Asked Questions

Can I maintain the aspect ratio when resizing?
Yes. Enable the "Lock Aspect Ratio" option and changing either width or height will automatically update the other dimension proportionally.
What is the maximum image size I can resize?
The limit depends on your browser's Canvas API memory. Most modern browsers handle images up to 32 megapixels without issues.
Will resizing to a larger size improve quality?
No. Upscaling a raster image beyond its original resolution will result in a blurry or pixelated image, as new pixels are interpolated.

About Image Resizer

The Image Resizer tool on Utilko makes it simple to change image dimensions for any purpose — social media posts, website banners, email headers, or print layouts. Everything runs client-side using the Canvas API, so your photos are never uploaded anywhere.

You can resize by exact pixel values or by percentage, with an optional aspect ratio lock to prevent distortion. Combine this tool with our Image Compressor for a complete image optimisation workflow.

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