Image Resizer
Resize images with width and height controls while keeping aspect ratio.
Select an image to start.
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Resized
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Overview
Resize images to exact pixel dimensions in your browser, with optional aspect-ratio lock. Useful for profile photos, thumbnails, and platform-specific image requirements.
How to use
- Select or drop an image file.
- Enter the target width or height; with the aspect ratio locked the other side scales automatically.
- Download the resized image.
Examples
-
Profile photo
Input: A 3000x3000 photo
Output: A 400x400 version that meets an upload limit.
-
OG image
Input: A wide screenshot
Output: A 1200x630 image for social sharing previews.
Notes
- Resizing uses the Canvas API locally; images are never uploaded.
- Keep the aspect ratio locked to avoid distortion in portraits and product photos.
- Animated GIFs are not supported; only the first frame is processed.
FAQ
- Will enlarging a small image improve its quality?
- No. Upscaling cannot add detail and usually looks blurry. Start from the largest original you have.
- What does the aspect-ratio lock do?
- Changing one dimension automatically scales the other proportionally, preventing stretched or squashed results.
- Are my images uploaded?
- No. All resizing happens in your browser via the Canvas API.
Embed this tool
Paste this iframe into any HTML page to embed Image Resizer on your site: