Image Resizer
Resize images online quickly with our free image resizer and resize image online tool. You can resize image, resize image online free, change image dimensions, and adjust pictures to the exact size you need. This image resize tool works as a convenient photo resizer for websites, social media, documents, and everyday use. Easily resize photo online, resize pictures online, or use the tool as an image size converter to change image size online and resize image by pixels. Wondering how to resize an image, how to change the size of a picture, or how to resize an image without losing quality? Upload your image, enter your preferred dimensions, and resize it instantly.
How to use the Image Resizer
- Choose an image.
- Enter width and/or height.
Image Resizer features and limits
- One side blank keeps the aspect ratio
- Limitation: very large outputs may exceed browser memory.
How the Image Resizer works
The image is scaled on a canvas and saved as PNG, WebP or JPEG.
Privacy and browser processing
Your input is processed locally in this page and is not uploaded or stored by Best Web Tools. Your hosting provider may still keep ordinary server logs for page requests.
Frequently asked questions
Does it keep quality?
Enlarging cannot add detail.
How do I resize an image without stretching it?
Fill in only the width or only the height. The other side is calculated to keep the original proportions.
What is the best image size for a website?
It depends on the layout. A common approach is to make the image no wider than the largest size it is displayed at, then compress it. Check the guidelines of your theme or platform.
Can I enlarge a small image?
You can, but enlarging cannot add detail, so the result may look soft or blocky.
Related tools
Browse all Image Tools or return to the Best Web Tools homepage.
Why use the Image Resizer?
Pages, profiles and uploads often require specific dimensions. Resizing before upload saves bandwidth.