↔️ Resize Image Online

Set exact pixel dimensions or scale by percentage

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Click or drag & drop an image here

How to resize an image

  1. Click the upload area or drag your image
  2. Enter the desired width and height in pixels
  3. Or enter a scale percentage
  4. Choose the output format
  5. Click "Resize Image" and download the result

Frequently Asked Questions

How do I resize an image online?

Upload the image, set the new width and height in pixels or percentage, click Resize, and download.

Can I resize while keeping the aspect ratio?

Yes, enable 'Keep aspect ratio' and the height will adjust automatically when you change the width.

What size range is supported?

You can set any dimensions from 1 to 10,000 pixels in width or height.

Will the image lose quality when resized?

Downscaling preserves quality. Upscaling may add slight blurring — this is a natural limitation of raster graphics.

What formats does the resize tool support?

JPEG, PNG, WebP and GIF are supported. Output can be saved as the original format or PNG.

Why choose AtlasImg?

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Fast

Processing happens instantly right in your browser

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Secure

Files are never uploaded to any server — everything stays local

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Free

All tools are completely free with no limitations or watermarks

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Any Device

Works on desktop, tablet, and smartphone browsers