About the Image Resizer
The Image Resizer sets a new width and height for a picture. Use it to meet the size requirements of a profile photo, shrink a camera photo for email, or prepare a thumbnail.
Enter the dimensions in pixels. The tool scales the image to exactly those values, so if the ratio differs from the original the picture will look stretched. To avoid distortion, calculate the matching height yourself: new height = new width × (original height ÷ original width).
How to use it
- Click Choose image.
- Type the new Width and Height in pixels and choose a Format.
- Press Resize and download.
Common sizes
Most social profile photos work well at 400×400 px. Web page images are usually 800 to 1600 px wide.
Making a small image larger cannot add detail, so it will look soft.
Downsizing is the most effective way to cut file size.
Real-world examples
Profile pictures. Many sites ask for a square image of 400×400 pixels.
Blog and store images. Resize to the displayed column width (for example 1200 px) to avoid sending huge files to visitors.
Thumbnails. Make a 300 px preview to use in a gallery or newsletter.
Common mistakes
Typing a width and height with a different ratio from the original stretches the picture. Work out one side from the other: new height = new width × original height ÷ original width. Enlarging a small image does not add detail; it only makes it blurry.
How it works
The image is drawn onto a canvas of your chosen width and height. The browser scales the pixels using smoothing, which blends neighbouring pixels so edges stay clean, then exports the canvas in your chosen format.
Frequently asked questions
Does it keep the aspect ratio?
No, it uses exactly the numbers you enter, so calculate matching values.
What formats can I save?
PNG, JPEG and WebP.
Is it uploaded?
No.