ToolFeather

Image Resizer

Resize images to exact pixel dimensions or by percentage, with an optional aspect-ratio lock. Batch supported, nothing uploaded.

Image Resizer

Drop images here or click to choose

🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.

How it works

The resizer redraws your image onto a canvas at new dimensions, letting the browser's high-quality scaling produce a clean result. You can resize two ways: by pixels, entering an exact target width and/or height, or by percentage, scaling everything up or down by a single factor — handy when you just want "half size" across a batch.

The maintain aspect ratio lock keeps your image from stretching. With it on, filling in one dimension automatically calculates the other from the original proportions, so a 4000×3000 photo resized to 800 wide becomes exactly 600 tall. Turn it off only when you deliberately want to distort or fit an exact box.

You choose the output format (PNG, JPEG, or WebP), and each resized image reports its new dimensions and file size with a download button. Batch mode processes multiple images against the same settings. As with all our image tools, everything is done locally on the canvas — no upload, no waiting, and full privacy for your photos.

Examples

4000×3000 photo → set width 800, ratio locked → output 800×600.
Percentage mode at 50% → every image becomes half its original size.
Batch a folder of product shots to a uniform 1000px wide.

Frequently asked questions

Will resizing reduce quality?
Shrinking is generally clean thanks to high-quality canvas scaling. Enlarging beyond the original dimensions can look soft, since the browser has to invent pixels that weren't there.
What does 'maintain aspect ratio' do?
It keeps the width-to-height proportion fixed, so entering one dimension auto-calculates the other and your image doesn't stretch or squash.
Can I resize several images at once?
Yes. Drop in multiple files and they're all resized with the same settings, each with its own download link.
Are my images private?
Completely. Resizing runs in your browser on the canvas; nothing is uploaded to any server.