Image Resizer

Change the width and height of your images in seconds — one picture or a whole batch.

Free to useNo sign-upProcessed locally

Websites, online marketplaces, profile pictures and application forms often require specific image sizes. The RIZONI TOOLS Image Resizer lets you enter exact pixel dimensions or scale by percentage, keeps proportions for you, and uses high-quality resampling so edges stay smooth.

Your images are resized on your device and never uploaded.

How to use Image Resizer

Upload imagesDrop one or more images into the box. Their current size in pixels is shown.
Choose pixels or percentageType a width or height (the other value follows automatically) or pick a percentage.
Set output optionsKeep the original format or choose JPG, PNG or WebP, and set the quality.
Resize and downloadClick Resize images, preview the results and download them individually or as a ZIP.

Features

Resize by exact pixels or percentage
Keep aspect ratio automatically
Don't-enlarge option to avoid blurry upscaling
Batch resize with ZIP download
High-quality step-down resampling
Output as JPG, PNG, WebP or original format
Accepts JPG, PNG, WebP, GIF, BMP and AVIF*
No upload — processed locally

Why use Image Resizer?

Meet exact size requirements for marketplaces, forms and social profiles.
Make images load faster by removing pixels you don't need.
Resize a whole folder of product photos in one go.
Keep your pictures private.

Resizing several images at once

When you resize a batch with Keep aspect ratio turned on, each image is fitted inside the width and height you enter, so portrait and landscape photos keep their proportions and none are stretched.

Turn off Keep aspect ratio only when you need an exact size, such as 1080 × 1080 pixels; images with a different shape will then be stretched to fit.

Common image sizes

Full-HD screens are 1920 × 1080 pixels, so 1920 pixels wide is a good maximum for most website images. Square social media posts are commonly 1080 × 1080 pixels. Profile pictures are usually shown at 400 pixels or less.

* AVIF input depends on your browser; current versions of Chrome, Edge, Firefox and Safari can open it. GIF animations are resized using their first frame.

Privacy and security

This tool runs entirely in your browser. Your files are processed on your own device and are not uploaded to our servers. When you close the page, the data is gone.

Frequently asked questions

Will resizing reduce image quality?

Making an image smaller keeps it sharp thanks to high-quality resampling. Making an image larger than its original can't add detail, so we prevent enlarging by default.

Can I resize to an exact size like 800 × 600?

Yes. Turn off Keep aspect ratio and enter both values. The image will be stretched if its shape is different.

Which formats are supported?

You can resize JPG, PNG, WebP, GIF, BMP and — in most current browsers — AVIF, and save as JPG, PNG or WebP.

Can I resize many images at once?

Yes. You can resize up to 20 images per batch and download them together as a ZIP file.

Are my images uploaded?

No. Resizing happens in your browser.