Sometimes you just need an image at specific dimensions — a banner that must be 1200×400, or a thumbnail at 300×300. This tool lets you type the exact width and height you want and resizes the image to match.
It all happens in your browser, so your image stays private while you set its dimensions.
How to use Change Image Width and Height
Using Change Image Width and Height takes only a few seconds and just four simple steps — no sign-up, no software, and nothing to learn:
- Upload the image: Add the photo you want to resize.
- Type width and height: Enter the exact dimensions in pixels (or another unit).
- Choose ratio behaviour: Lock the aspect ratio or set width and height independently.
- Download: Save the image at its new dimensions.
What you can do with Change Image Width and Height
Change Image Width and Height is built to do one job well, and gives you everything you need to get it exactly right:
Exact dimensions. Set any width and height you need.
Ratio control. Keep proportions or stretch to fit a specific box.
Multiple units. Work in pixels, cm, or inches.
Free, private. Resized in your browser with no watermark.
Hit any dimension precisely
Banners, thumbnails, and upload boxes all demand specific dimensions. Typing the exact width and height here gives you a perfectly sized image without cropping or guesswork.
Whether you need it once or every day, Change Image Width and Height keeps the process quick and predictable. Because it focuses on a single task, there are no crowded menus to wade through — you open the page, set what you need, and get your result. That simplicity is exactly why a dedicated image tool beats a heavyweight editor for a job like this.
Everything runs in your browser
Unlike most online tools, Change Image Width and Height never uploads your image to a server. The moment you choose a file, it is processed right here in your web browser using your own device's power. Nothing is sent over the internet, nothing is stored, and nothing is shared with anyone.
That gives you two real advantages. First, it is private: sensitive documents, ID photos and personal files never leave your computer or phone. Second, it is fast — there is no slow upload or download round-trip, so even large files are handled almost instantly. And it is completely free, with no watermark added to your result and no account required.
Tips for the best results
- Start from the highest-quality original you have — the better the input, the better the result from Change Image Width and Height.
- Check the exact requirement — size, dimensions, or format — before you begin, so you only need to do it once.
- Exact dimensions: Set any width and height you need.
- Ratio control: Keep proportions or stretch to fit a specific box.
- Everything is repeatable — if the result isn't quite right, just adjust the settings and run it again. Nothing is uploaded, so you can try as many times as you like.
Frequently asked questions
Can I resize without keeping the ratio?
Yes — unlock the aspect ratio to set width and height independently, though this can stretch the image.
Will the file get smaller?
Smaller dimensions usually mean a smaller file. Use a compressor too if you need an exact KB.
Is my image uploaded?
No — it's resized in your browser.
Is Change Image Width and Height free to use?
Yes — Change Image Width and Height is completely free. There is no account to create, no subscription, and no watermark added to your result. Use it as many times as you need.
Do I need to install anything?
No. Change Image Width and Height runs entirely in your web browser on any modern device — Windows, Mac, Android or iPhone. There is nothing to download or install.
Ready to start? Scroll back to the top, drop your image into Change Image Width and Height, and download the finished file in seconds — free, private, and right inside your browser.