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Resize an image to exact pixel dimensions

Set a new width and height in pixels or scale by percentage. The aspect ratio is locked by default so your image never stretches unless you choose to.

Drop an image to resize

JPG, PNG or WebP · up to 25 MB

This tool runs entirely in your browser using the Canvas API. Your image is not uploaded to ToolsNest servers, and it is discarded when you clear the tool or close the tab.

How to use the Image Resizer

  1. 1Upload an image to see its original dimensions.
  2. 2Enter a width or height, use a percentage, or choose a preset.
  3. 3Choose an output format.
  4. 4Preview the result and download it.

Supported formats and limits

  • Input: JPG/JPEG, PNG, WebP up to 25 MB.
  • Output size: 1 to 8,000 px per side.
  • Enlarging beyond the original size is allowed but clearly flagged, since it cannot add detail.
  • Presets for fixed sizes fit the image inside the box and keep proportions when the lock is on.

Common uses

  • Preparing a 1080×1080 image for social media.
  • Matching a passport-photo or form upload requirement.
  • Shrinking a large camera photo for a website.

Frequently asked questions

Will resizing reduce quality?

Shrinking keeps images sharp. Enlarging spreads existing pixels over a bigger area and usually looks soft.

How do I stop my image stretching?

Keep 'Lock aspect ratio' on. The other dimension updates automatically.

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