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Change the pixel dimensions of an image to an exact width and height. Resizing is the thing to do when a site rejects your upload for being too large, when a form asks for a specific size, or when a 6000-pixel-wide photo is being used as a 600-pixel thumbnail and wasting most of its data. Enter the numbers you need, or lock the proportions and set just one side.
How it works
- Drop in your image. The current width and height appear straight away.
- Type the width you want. With proportions locked, the height follows automatically.
- Unlock the proportions if you need an exact frame and are willing to stretch, or to pad the difference instead.
- Download at full quality in the original format, or switch format on the way out.
Good to know
Making an image smaller is safe: the detail is already there and is being averaged down. Making it larger is not — there is no extra detail to recover, so an upscaled image is a softer, smoother version of the original rather than a sharper one. If you need a larger image, start from a larger original wherever that is possible. When you must upscale, a modest increase of around 150% holds up reasonably well; beyond roughly double, the softness becomes obvious.
Frequently asked questions
Will resizing reduce the file size too?
Yes, and usually by a lot. Halving both the width and the height leaves a quarter of the pixels, so the file typically shrinks to roughly a quarter as well.
How do I resize without losing quality?
Resize downward rather than upward, and keep the original proportions so nothing has to stretch. Within those two rules the loss is not visible.
What happens if I enter a different aspect ratio?
Something has to give. You choose whether the image stretches to fill the new frame or keeps its shape and leaves space at the edges — the preview shows which you are getting.
Can I resize several images to the same size?
Yes. Drop in a batch and the same dimensions are applied to all of them, which is the quick way to normalise a folder of mixed sizes.