TOOLADEX
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Image Resizer

Resize JPG, PNG, WebP, GIF, AVIF, and BMP images by width and height. Keep aspect ratio and download the resized result instantly.

100% Client-Side Processing

All resizing happens in your browser. Your images are not uploaded to a server.

Supported: JPG, PNG, WebP, GIF (first frame), AVIF, BMP.

Table of Contents

What is an Image Resizer?

An image resizer changes the pixel dimensions of an image. This helps you optimize for websites, email attachments, social media uploads, and design workflows that require exact dimensions.

How it Works

  • Upload a supported image file.
  • Set target width and height (with optional aspect lock).
  • Choose output format and quality.
  • Generate and download the resized image.

Best Practices

  • Keep aspect ratio locked for photos to prevent stretching.
  • Use JPG/WebP for photos, PNG for graphics and transparency.
  • Resize before uploading to improve page speed and UX.
  • For retina displays, export at 2x target display size when needed.

Frequently Asked Questions

Does resizing reduce quality?

Resizing can reduce detail if you shrink significantly. Format and quality settings also affect output quality.

Are my images uploaded?

No. Processing happens in your browser. Files are not uploaded to a server.

Can I resize transparent images?

Yes. Use PNG or WebP to keep transparency. If exporting JPG, transparent areas are filled with a background color.