Image Resizer
Resize images to exact pixel dimensions or by percentage, with an optional aspect-ratio lock. Batch supported, nothing uploaded.
Image Resizer
🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.
Features
Resize by pixels or percentage
Enter an exact target width and height, or scale everything by a single percentage — whichever matches the requirement in front of you.
Aspect-ratio lock
Keep the aspect ratio locked so images never look stretched, or unlock it when you need a precise non-proportional size.
Batch several at once
Drop in many images and resize them all to the same settings in one go.
High-quality scaling, no upload
Each image is redrawn on a canvas using the browser's high-quality scaler, entirely on your device — nothing is sent anywhere.
Export as JPG, PNG or WebP
Choose the output format as you resize, so the file is ready for wherever it's going.
How it works — in four simple steps
No signup, nothing to install — it all runs in your browser.
Add your images
Drag in or select the pictures you want to resize — one or many.
Pick pixels or percentage
Switch to By pixels for exact dimensions, or By percentage to scale by a factor. Leave Maintain aspect ratio on to avoid distortion.
Enter the target size
Type the width and/or height, or the scale percentage, and choose the output format.
Resize and download
Press Resize and download each finished image, ready to upload or share.
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
When to use it
Meet an upload size limit
Shrink a photo to the exact pixel dimensions a job portal, form or forum allows before it will accept the file.
Prepare images for the web
Resize large camera photos down to a sensible display width so pages load faster and use less bandwidth.
Make consistent thumbnails
Batch-resize a set of images to identical dimensions for a gallery, product grid or slide deck.
Fit a profile or avatar
Get a picture to the square or specific size a platform wants for a profile photo or banner.
Tips for the best results
- Keep aspect ratio on for photos. Leaving the lock enabled prevents the stretched, squashed look — enter just the width or just the height and the other is worked out for you.
- Resize down, not up. Enlarging past an image's real resolution adds no detail and looks soft; start from the largest original you have.
- Pick the right format. Use JPG or WebP for photographs to keep files small, and PNG when you need transparency or crisp text and lines.