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Image Resizer – Free Online Tool

Quick Answer

Resize images to specific dimensions quickly with this free image resizer from Toolscal. Upload your photo and set custom width and height with aspect ratio control without signup or downloads.

Resize images to specific dimensions quickly and easily

What is Image Resizer? An image resizer is a free tool by Toolscal that changes image dimensions (width and height) while maintaining quality. Resize photos for websites, social media, or thumbnails with aspect ratio control.

About This Tool

Resizes images to specific dimensions. Useful for social media, web optimization, and thumbnails.

Accuracy Information

Notes: Maintains aspect ratio by default. Processing done in browser. No uploads to server.
Author: Toolscal Engineering
Maintained by: Toolscal Team
Last updated: December 29, 2025
Version: 1.0.0

How to Use

  1. 1Select an image file from your device
  2. 2Enter desired width and height in pixels
  3. 3Toggle "Maintain Aspect Ratio" to prevent distortion
  4. 4Click "Resize Image" and download the result

Why Use This Tool?

  • Resize images for website requirements
  • Create thumbnails from larger images
  • Adjust images for social media dimensions
  • Prepare images for email or messaging
  • Standardize image sizes for galleries

Frequently Asked Questions

What does maintain aspect ratio mean?

Maintaining aspect ratio keeps the original proportions of the image. When enabled, changing width automatically adjusts height (and vice versa) to prevent distortion.

Will resizing reduce image quality?

Enlarging images may reduce quality. Reducing size generally maintains quality. For best results, avoid enlarging images beyond their original dimensions.

Are my images uploaded anywhere?

No! All resizing happens in your browser. Your images never leave your device.

What image sizes are best for websites?

For website headers: 1920x1080px. Blog featured images: 1200x630px. Thumbnails: 300x200px. Social media: Facebook (1200x630px), Instagram (1080x1080px), Twitter (1200x675px).

Can I resize images in bulk?

This tool processes one image at a time for precision. For batch processing, consider using desktop software like Adobe Photoshop or free tools like IrfanView or GIMP.

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