Resize image

Change the width and height of an image.

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What it is for

Resizing changes an image’s dimensions in pixels. It is not the same as compressing: here you are not adjusting save quality but how many dots make up the picture, which affects both file size and the size it displays at.

Most images we handle are far larger than necessary. A phone photo is around 4000 pixels wide, while a laptop screen shows about 1400. Publishing the original means forcing the browser to download three times more information than it will use.

Reducing is a clean operation because it only has to discard pixels. Enlarging is another matter: the program has to invent the missing information, and the result always loses sharpness.

How it works

Upload the image you want to resize.
Type the width and height in pixels you need.
Click "Process" and download the resized image.

When to use it

Images for the web

Matching the width to the size the image actually displays at cuts file size dramatically and speeds up loading.

Profile pictures and avatars

Many platforms ask for exact dimensions. Setting them beforehand stops automatic cropping from framing the photo badly.

Documents and presentations

Inserting pre-resized photos keeps the file manageable instead of dragging around enormous images.

Practical tips

Work out the ratio before typing the dimensions. This tool applies exactly what you enter, so values that ignore the original proportion will distort the image.
To keep the proportion, divide the original height by the original width and multiply that figure by the new width.
Enlarging beyond the original size never adds real detail, only blurry pixels. Always start from the largest image you have.
Resizing and compressing complement each other: set the dimensions first, then compress. The other way round wastes effort.

Frequently asked questions

Will the image get distorted if I change only one dimension?

This tool applies exactly the width and height you enter, so if you don't keep the original ratio, the image will stretch or squeeze differently on each axis.

Can I enlarge a small image without losing quality?

You can increase the size, but enlarging beyond its original resolution will make the image look softer, as with any resizing tool.