Resize Image

About the Resize Image

An image that is the wrong size is a problem in both directions — too big and it loads slowly and breaks layouts, too small and it looks pixelated. Resizing to exact dimensions fixes it, whether for a profile photo, a product image or a print.

This Resize Image tool changes an image to exact pixels or by percentage in your browser, keeping the proportions right and nothing uploaded.

How to use the Resize Image

1. Add your image by dragging it in or browsing.
2. Enter the target width and height, or a percentage.
3. Keep the aspect ratio locked to avoid distortion.
4. Download your resized image.

Key features of the Resize Image

• Resize to exact pixels or by percentage
• Locks aspect ratio to prevent distortion
• Great for web, social and print
• Fast and simple
• Runs locally — images are never uploaded

How the Resize Image works

This tool processes your pictures using the browser's built-in Canvas API and standard image codecs for JPG, PNG and WebP. Resizing, cropping, conversion and compression all happen on your own device, so the image data is never sent to a server. Compression balances file size against visual quality using established lossy and lossless techniques appropriate to each format.

Tips & best practices

• Keep the aspect ratio locked unless you deliberately want to stretch the image, or it will look distorted.
• Resizing down keeps quality; enlarging a small image beyond its resolution makes it blurry.
• Resize to the exact display size, then compress, for the fastest-loading result.

Standards & accuracy

Uses the browser's native Canvas API and standard web image formats (JPG, PNG, WebP) — images are never uploaded.

For the best results, resize an image to the dimensions you actually display before compressing, and choose WebP for the web where a smaller file at the same quality is the priority.

Who uses the Resize Image?

• Fitting images to a website or template
• Meeting exact size requirements for uploads
• Creating profile and thumbnail images
• Preparing images for print

Privacy & security

The Resize Image runs entirely inside your web browser. Your data — whether that is a file, figures or text — is processed on your own device and is never uploaded to a server, stored or shared. There is no signup and no account, so you can use it as often as you like while keeping full control of your information. This makes it a safe choice even for confidential and sensitive work.

Why choose Toolinza?

• 100% free — no hidden charges, watermarks or usage caps.
• Private & secure — your data stays on your device.
• Standards-compliant — accurate results suitable for the UK, USA, Canada, Australia, EU, India, Pakistan, the Middle East and worldwide.
• Works everywhere — desktop, tablet and mobile.

Frequently asked questions