Image Resizer
Resize an uploaded image to exact pixel dimensions and download the result locally.
Resize pixels without uploading a file for one focused image job
An image can have the right subject but the wrong dimensions for a CMS field, product thumbnail, email header, or marketplace upload. This resizer loads the file into a browser canvas and redraws it at the exact width and height you choose, which turns a large original into a predictable web asset.
For example, a 2400 by 1600 photo can become a 1200 by 800 image for a landing page card, or an 800 by 800 square if the destination demands a square listing graphic. The preview shows the actual exported canvas size before you download it.
Output limits and privacy
This changes pixel dimensions, not composition. If you enter a mismatched ratio, the image will distort rather than crop. Resizing runs inside this page, so original photos are not transferred while you test different target dimensions. This makes it easier to match strict upload specs without guessing after export.
Frequently Asked Questions
How does the image resizer work?
It draws the uploaded image to an HTML canvas at the width and height you enter, then exports the canvas as a PNG.
What should I check before using the output?
Resizing to a different aspect ratio stretches the image, so keep the original ratio when you only want a smaller copy.
When is this useful?
Use it when an upload form wants exact dimensions, such as a square product thumbnail or a smaller blog-card image.
Are my files uploaded?
No. The tool runs in your browser, so the image is not sent to a server.
More free browser utilities for image, design, and publishing workflows.