How the image dimensions checker works
Last updated 10 November 2026
Forms and websites often ask for pictures of a certain size. This tool tells you what you have.
How it works
- Choose the pictures.
- The width and height are read from the image, with the shape and file size.
Why dimensions matter
Application portals, printers and websites often ask for a picture of a set size. Before you resize anything, it helps to know what you have. Choose one or more pictures and the tool lists their width and height in pixels, their shape and their file size.
What you will see
- Width and height in pixels
- Aspect ratio, the shape of the picture, such as square, wide or tall
- File size, so you can see whether it will fit an upload limit
- Megapixels, a rough measure of how much detail the picture holds
Pixels and printing
A picture that looks sharp on a phone may be too small to print large. As a rough guide, more pixels allow a bigger print before it looks soft. A printer or photo shop can tell you the size they need, and this tool tells you what you are starting with.
Turned pictures
Phones sometimes save a picture sideways and add a note saying how to turn it. The size shown is what your browser reports, which usually includes that turn. If a portal reads the size differently, rotating the picture and saving it again can fix it.
Related tools
If the size is wrong, use the resize tool to change it or the crop tool to change the shape. Your pictures are read inside your browser and are never uploaded.
A short example
A portal says a photo must be a certain size in pixels. Drop your photo in and read the width and height. If it is bigger, use the resize tool. If the shape is wrong, crop first and then resize. If the file is too heavy, compress it last.
Reading the shape
The shape is shown as a ratio, such as one to one for a square or sixteen to nine for a widescreen picture. Two pictures with the same ratio have the same shape even if one is much bigger than the other.
Several pictures at once
Choose several pictures to compare them in one list. This is useful for checking that a set of photos is the same size before you build a PDF, a slideshow or a web page with them.
Private by design
The size is read from the file by your browser. The picture is not uploaded or stored.
Why file size and pixel size differ
Two pictures with the same width and height can have very different file sizes, because detail, noise and format all affect how much space the picture needs. A busy photo takes more space than a plain background of the same size.
Things to watch
- Some images contain information about how to turn them. The size shown is what the browser reports.
Like every tool on MoneyMzansi, this one runs entirely in your browser. There is no account, no upload and no sign-up. Your files are read and processed on your own device, and nothing is kept once you close the page.