Resize Image
Resize any image to exact dimensions or a percentage — fast, high quality, and entirely in your browser.
About the Resize Image
Resizing an image means changing its dimensions — making it smaller to fit an upload limit or a layout, or adjusting it to exact pixel sizes a platform requires. This tool resizes any image to the width and height you specify, or by a percentage, while keeping the quality sharp and the proportions correct if you want them locked.
Getting dimensions right matters more than it seems. Upload an image that is too large and pages load slowly; too small and it looks blurry when stretched. Many sites and forms also demand specific sizes — a profile photo, a document scan, a product image. Being able to set exact pixels, or scale by percentage, lets you hit the target precisely instead of guessing.
Everything happens in your browser, so your image is never uploaded to a server — important for personal photos and documents — and there is no wait to transfer files up and back. Choose your dimensions, keep or unlock the aspect ratio, and download the resized image in seconds.
Looking for more options? Open the full Image Resizer — it’s the same tool with every feature.
Frequently Asked Questions
How do I resize an image?
Upload the image, enter the new width and height in pixels (or set a percentage to scale by), and download the result. You can keep the aspect ratio locked so the image is not distorted, or unlock it to set exact dimensions. It all happens in your browser.
Will resizing reduce the image quality?
Making an image smaller generally keeps it looking crisp. Enlarging an image beyond its original size can make it appear soft, because there is no extra detail to add. For best results, resize down from a high-resolution original rather than scaling a small image up.
What is aspect ratio and should I keep it?
Aspect ratio is the proportion of width to height. Keeping it locked means the image scales without distortion — circles stay round, faces stay natural. Unlock it only when you deliberately need exact dimensions that do not match the original proportions, accepting some stretching.
Understanding Image Resizing
Pixels, dimensions and file size
An image’s dimensions are its width and height in pixels, and they strongly influence file size — halving both dimensions roughly quarters the pixel count. Resizing to the dimensions you actually need is often the simplest way to make an image smaller and pages faster, without touching compression. Knowing the exact pixel size a platform expects lets you resize to it precisely.
Resizing versus cropping
Resizing changes the scale of the whole image, keeping all of its content but at different dimensions. Cropping removes parts of the image to change its shape or focus. They solve different problems: resize when you need the same picture at a new size, crop when you need to cut to a particular area or aspect ratio. Often you resize after cropping to a final size.
Upscaling limits
You can shrink an image freely, but enlarging it cannot create detail that was never captured — an upscaled image is interpolated and can look soft or blocky. For quality, always start from the largest original you have and resize down. If you frequently need large outputs, capture or export at higher resolution from the source rather than upscaling later.