Image Resizer
Resize an image to an exact width and height in pixels, with the aspect ratio locked so nothing ends up stretched.
Getting the size right
Most resizing jobs come down to a number someone else decided: a forum avatar that has to be 200×200, an upload form that rejects anything wider than 2000 pixels, a set of product photos that all need to match. This tool lets you type that number in directly instead of dragging a slider and hoping.
Leave the aspect-ratio lock on and you only set one dimension — the other follows automatically and the picture keeps its proportions. Turn the lock off only when you genuinely need an exact width and height and don't mind the image being cropped or squeezed to fit.
Which direction you're resizing matters
Shrinking an image almost always looks clean, because you're throwing away pixels you didn't need. Enlarging is the awkward direction: the tool can add pixels, but it can't invent detail the camera never captured, so a small image blown up will look soft. If you need a big, crisp result, start from the largest original you have.
How to resize an image
- Add your image and its current dimensions appear.
- Enter a new width or height — the aspect ratio stays locked unless you unlock it.
- Download the resized picture.
Pick the size the image is actually used at
Resizing means changing an image's pixel dimensions, which is different from compressing it. It is the cleanest saving available, because you are removing data the display was never going to use. A blog banner rarely needs more than 1600 pixels wide; a profile picture rarely more than 500.
Enlarging is the one direction to be careful with. There is no extra detail to invent, so a small image scaled up looks soft. Always start from the largest original you have and scale down rather than up.
Common questions
Will resizing make my image blurry?
Scaling down stays sharp. Scaling up looks soft, because the extra pixels have to be invented — always resize down from the biggest original you have.
What does keeping the aspect ratio mean?
It keeps width and height in proportion so nothing is stretched. Unlock it only when you deliberately want to squash or crop to a shape.
What size should a website image be?
Around 1200-1600 pixels wide covers most full-width uses; thumbnails and avatars need far less.
Will resizing make my image blurry?
Making it smaller keeps it sharp. Making it larger than the original will look softer, because the extra pixels are filled in by guesswork rather than real detail.
How do I resize without stretching the image?
Keep the aspect-ratio lock on and set just the width or the height — the other side adjusts to match, so the proportions stay correct.
Does it change the file format?
No. The resized image comes back in the same format you put in, whether that's JPG, PNG or WebP.