Resize Image by Pixels

Enter an exact width and height in pixels — the aspect ratio locks automatically so nothing stretches.

How to resize by exact pixels

Drop your image in, then type the exact width you need. With the lock icon active, the height updates automatically to keep the original proportions — enter a height instead if that's the dimension you know.

For example, a marketplace listing that requires a 1200×1200 product photo, or a CMS field capped at 800 pixels wide — type the number in, and the download is ready immediately at that exact size.

When you need exact dimensions

Setting a precise pixel width and height matters whenever a destination enforces an exact requirement — a passport photo spec, a print template, a website's required banner size, or an upload form that rejects anything outside a stated resolution. Unlike percentage scaling, this gives you the final number directly rather than a proportion of the original.

Locking proportions while you type a new width will automatically calculate the matching height, and vice versa, so the image never gets stretched out of shape unless you deliberately unlock that setting. Because enlarging a photo can't add detail that wasn't captured originally, this tool works best for scaling down or for modest increases in size.

Matching an exact spec

Some requirements are strict about the exact number — a passport photo application, an ad platform's creative spec, or a print shop's template all typically reject anything outside their stated pixel dimensions, which is exactly the kind of precision this tool is built for rather than an approximate resize.

Resizing happens through the Canvas API running locally in your browser, so you see the exact resulting dimensions immediately and can adjust the width or height again right away if the first attempt doesn't match the requirement precisely.

Finding the numbers you need

If you're not sure what pixel dimensions a form or platform expects, check its upload guidelines or help documentation first — most state an exact width and height, or a maximum for one dimension, rather than leaving it open. Once you have that number, type it directly into the width or height field here and let the lock keep the other dimension proportional.

Frequently asked questions