What it is
The Image Resizer changes the pixel dimensions of a picture: to a width and height you type, or to a percentage of the original.
Why resize rather than compress
These solve different problems and get confused constantly.
Compressing keeps the dimensions and lowers the quality. Resizing keeps the quality and lowers the dimensions. When a file is heavy because it is 4000 pixels wide and will be displayed at 800, resizing is the honest fix: you are removing pixels nobody was going to see.
Doing it in the right order matters too: resize first, then compress. Compressing a huge image and then shrinking it wastes the compression entirely.
How to use it
- Add the image.
- Enter the width or the height, keeping the aspect ratio locked unless you specifically want to distort it.
- Download the result.
Sizes worth knowing
A photo for a website rarely needs more than 1920 pixels on its longest side. A profile picture is usually displayed at 400 or less. An email signature works at around 200. A printed photo is the exception: printing needs far more pixels than a screen, so keep the original for anything going to paper.
Enlarging is the one thing resizing cannot really do. Adding pixels does not add detail, so an image scaled up past its original size gets soft rather than bigger.
Nothing is uploaded
The whole operation runs inside your browser. Your file is never sent to a server, never stored and never seen by anyone else. There is no queue, no daily cap and no account: the only real limit is your own device.