Image Resizer
Resize images to any dimension while optionally preserving the aspect ratio - instantly, in your browser.
Drag your image here, or click to
browse
Upload an image before starting to resize
What is the Image Resizer?
The image resizer changes a picture's pixel dimensions - to make a thumbnail, fit an upload limit, or match a layout. Enter a width and height, and optionally keep the aspect ratio locked so the image does not stretch. It redraws the picture on a canvas in your browser, so nothing is uploaded.
Leaving the aspect-ratio lock on means setting one dimension scales the other automatically, which avoids the squashed or stretched look you get when the proportions change.
How to use the image resizer
- 1. Upload an image by dragging it in or browsing.
- 2. Enter the Width and Height in pixels.
- 3. Keep maintain aspect ratio ticked to avoid distortion.
- 4. Resize and download the result.
Features
- Resize to exact pixel width and height.
- Optional aspect-ratio lock to prevent stretching.
- Redraws on a canvas for a clean result.
- Runs in your browser - your image is never uploaded.
- Free, no account.
Common uses
Making a thumbnail from a large photo, fitting an image under a size or dimension limit, preparing avatars and banners at set sizes, or scaling screenshots down for a document. Resizing before upload also cuts the file size you send.
Setting an exact width and height is also the reliable way to hit a platform's required dimensions - a 1200x630 social card, a 1080-pixel-wide upload, or a fixed avatar size - instead of hoping a percentage lands on the right number. The aspect-ratio lock keeps everything in proportion while you do it.
FAQ
Is my image uploaded?
No. Resizing happens in your browser on a canvas, so the photo never leaves your device.
How do I avoid stretching the image?
Keep the maintain-aspect-ratio option ticked. Then changing one dimension scales the other to match, so the proportions stay correct.
Can I make an image larger?
Yes, but enlarging beyond the original size stretches the existing pixels, so it will look softer. Downscaling keeps things crisp.
What format do I get back?
The resized image downloads as a PNG drawn from the canvas at your chosen dimensions.