Resize Image Online Free — Change Image Size

About This Tool

Resize any image to exact pixel dimensions in seconds — no software, no signup. Enter width and height, lock the aspect ratio to scale proportionally, or switch to percentage mode for quick scaling. All resizing runs locally in your browser — your images never leave your device.

📐 Exact Dimensions
Set any width and height in pixels — or pick from platform-specific presets.
🔒 100% Private
All resizing happens in your browser — your images never leave your device.
⚡ Instant Results
Resize and download in seconds — no uploads, no waiting, no watermarks.
🆓 Free, No Limits
Completely free — no account, no subscription, resize as many images as you need.

How to Resize an Image

  1. Upload an image. Start with the original file whenever possible.
  2. Set your target size. Enter exact pixels, choose percentage scaling, or lock the aspect ratio to keep proportions.
  3. Choose an output format and download. Save as JPEG, PNG, or WebP for your next use.

Common Questions

How do I resize an image without stretching it?

Lock the aspect ratio before changing width or height. The other dimension updates automatically to keep the image proportions.

Does enlarging an image reduce quality?

Enlarging can make fine detail look softer because the original image has a fixed amount of information. Downsizing is usually the best way to retain a crisp result.

Which file format should I use after resizing?

Use JPEG for photographs, PNG when transparency or sharp graphic edges matter, and WebP for a smaller web-friendly image.