Resize Image Online Free — Change Image Size
Make any photo bigger or smaller — exact pixels or a percentage — with the aspect ratio kept. Free, no sign-up, images never leave your device.
✦ Free forever • No sign-up • No upload • No watermark
Resize Image — Free, No Sign-Up
Choose one image, enter the new width or height (or a percentage), and press Resize. The aspect ratio stays correct unless you unlock it.
How to use Resize Image
Choose your image
Click the box above or drop one image onto it. The current size in pixels is shown right away.
Enter the new size
Type a new width or height in pixels, or use the percentage slider. Keep “Lock aspect ratio” on and the other side follows automatically.
Download the resized image
Press “Resize Image”. The new image downloads at exactly the size you asked for.
Example: Example: a 4000×3000 photo resized to 50% becomes 2000×1500 — perfect for a website. Resized to 800 pixels wide, it becomes 800×600.
About Resize Image
Photos from modern phones are huge — 4000 pixels wide and several megabytes — far bigger than a website, a profile picture or a form ever needs. ImageTools resizes your images right in your browser: type the exact pixels you need, or shrink by a percentage, and the resized picture downloads in seconds. The aspect ratio is locked by default, so nothing ever looks stretched or squashed.
Resizing down makes files smaller and pages faster; resizing up is possible too, though it cannot add detail that was never there — the tool is honest about that. There is no upload, so your pictures never leave your device, and there is no watermark, no limit and no account. Everything is free, and it works on phones, tablets and computers.
Frequently asked questions
How do I resize an image online?
Choose your image, enter the new width or height in pixels (or a percentage), and press “Resize Image”. The resized image downloads immediately.
Will resizing keep the aspect ratio?
Yes, by default. With “Lock aspect ratio” on, changing the width updates the height automatically, so the picture never looks stretched.
Can I make an image bigger?
Yes — you can resize up as well as down. Enlarging cannot add detail, so very large enlargements look soft, but small ones are fine.
What size should I use for a profile picture?
Most sites want 400×400 to 800×800 pixels. Resize to 800 wide and the picture is sharp everywhere without being heavy.
Is resizing images free?
Yes. Resizing images on ImageTools is 100% free. There is no paid plan, no limit and no watermark.
Do my images get uploaded?
No. The resize happens entirely in your browser. Your images never leave your device and nothing is stored on any server.
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