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SmaftyTools

Image Resizer

Resize images to exact pixel dimensions and download as PNG, JPEG or WebP. Free image resizer that runs entirely in your browser — no upload.

Your image is resized locally in the browser — it is never uploaded.

About Image Resizer

The Image Resizer changes an image's pixel dimensions right in your browser and lets you download the result as PNG, JPEG or WebP. Set an exact width and height, or lock the aspect ratio so the image scales without distortion.

It's perfect for preparing profile pictures, product photos, blog images and email attachments that need specific dimensions or smaller file sizes. High-quality canvas scaling keeps the output crisp.

Unlike most online resizers, nothing is uploaded — the image is processed locally with the HTML5 canvas, so private photos stay private and there are no file size limits imposed by a server.

How to Use the Image Resizer

  1. Choose an image from your device.
  2. Enter the new width or height — with aspect lock on, the other side adjusts automatically.
  3. Pick an output format (PNG, JPEG or WebP) and click Download.

Features

  • Exact pixel dimensions with optional aspect-ratio lock
  • PNG, JPEG and WebP output
  • High-quality canvas scaling
  • 100% local processing — images never leave your device

Frequently Asked Questions

Will resizing reduce image quality?

Downscaling generally looks great thanks to high-quality smoothing. Upscaling beyond the original size can't add detail, so large enlargements may look soft.

Which format should I choose?

PNG for graphics, screenshots and anything needing transparency; JPEG for photos where small file size matters; WebP for the best size/quality balance in modern browsers.

Is the Image Resizer free?

Yes, the Image Resizer is completely free with no usage limits. No signup, no account and no installation required.

Is my data safe?

Yes. All processing happens locally in your browser using JavaScript — nothing you type is uploaded or stored on our servers.

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