Image Resizer

Upload a JPG, PNG, or WEBP photo, set an exact width and height in pixels, download the resized file. Free, no sign-up, your photo never leaves your browser.

How it works

  1. Upload your photo. JPG, PNG, or WEBP — drag & drop or click.
  2. Set the width and height. Lock the aspect ratio, or use the quick percentage buttons.
  3. Download the resized file. The format stays the same, only the dimensions change.

Why Stelluna

Frequently Asked Questions

Is it free?
Yes, no account needed.

Does my photo get uploaded anywhere?
No, resizing runs entirely in your browser.

Which formats are supported?
JPG, PNG, and WEBP, up to 20MB. The output keeps the same format you uploaded.

Do I need to sign up?
No.

How do I resize without distorting the image?
Keep "Lock aspect ratio" checked — changing the width automatically adjusts the height, so the image scales without stretching.