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Image Resizer

Utilities Free Updated 1 Sep 2026
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ⓘ About this tool 🔄 Last updated 1 Sep 2026 ✓ Reviewed by TopToolAI Team

Resize an image to exact dimensions or a percentage of its original size, right in your browser, before uploading it anywhere. Resizing a 4000x3000 pixel camera photo down to 1200x900 for a website keeps the same 4:3 proportions while cutting the file size dramatically, since most websites do not need or display anywhere near full camera resolution.

How to use Image Resizer

Step-by-step guide to the boxes below. Open it only if you need help.

  1. 1
    Choose image Upload

    Pick the image you want to resize.

    Choose a file from your device. It stays in your browser.

  2. 2
    Width (px) Number

    The new width in pixels.

    Example: 800

  3. 3
    Height (px) Number

    The new height in pixels. With the lock on, it follows the width so the picture does not look stretched.

    Example: 600

  4. 4
    Lock aspect ratio Tick box

    Keep it ticked to avoid stretching. Untick it only if you need an exact width and height.

    Tick the box if it applies to you, leave it empty if not.

  5. 5
    Press “Resize image”

    Click the button under the boxes. If something is missing or not valid, a short message tells you which box to fix.

  6. 6
    Read your result

    Your resized image is shown and can be downloaded. Change any box and try again to compare different numbers.

Image Resizer FAQs

Will resizing stretch or distort my image?
Keep the aspect ratio locked while resizing to avoid stretching — only unlock it if you specifically want a different shape.
Can I resize multiple images at once?
This version handles one image at a time for precise control over each result.
Is my image uploaded to a server?
No — resizing happens directly in your browser, so your image never leaves your device.
Can I make an image bigger, not just smaller?
Yes, but enlarging beyond the original size can reduce sharpness since no new detail is actually being added.

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