Image Resizer
Resize images to exact dimensions in your browser, with optional aspect-ratio lock.
Drop an image or click to choose
Resized in your browser — nothing is uploaded.
What Is the Image Resizer?
The Image Resizer is a free online tool that lets you resize images to exact dimensions in your browser, with optional aspect-ratio lock. It runs entirely in your browser — your text and files never leave your device, so it's fast and private. There's nothing to install and no sign-up required.
How It Works
Using the Image Resizer takes seconds. Paste or type your content into the input area (or upload a file where supported), adjust any options to fit your needs, and the result updates instantly. You can then copy the output to your clipboard, download it, or clear everything and start again. Because all processing happens locally with JavaScript, it works offline once the page has loaded.
When to Use It
Reach for the Image Resizer whenever you need a quick, reliable way to resize images to exact dimensions in your browser, with optional aspect-ratio lock. It's popular with writers, students, developers, marketers and anyone who works with image & media day to day. Bookmark it alongside the other Image & Media in our toolbox so it's always one click away.
Frequently Asked Questions
- Is the Image Resizer free to use?
- Yes. Every tool on the site is completely free, with no account, login or download required.
- Is my data private?
- Absolutely. The Image Resizer processes everything locally in your browser. Your text and files are never uploaded to a server, so your data stays on your device.
- Does it work on mobile?
- Yes. The Image Resizer is fully responsive and works on phones, tablets and desktops in any modern browser.
- Do I need to install anything?
- No installation is needed — it runs in the browser. We also offer an optional browser extension and mobile app for quick access to popular conversions.
Last reviewed: 2026-06-27