Image Resizer
Resize images by maximum width and height, then export the optimized result.
Image Resizer
Resize images by maximum width and height, then export the optimized result.
About this image resizer
The image resizer changes an image's pixel dimensions, scaling it within a maximum width and height while keeping its proportions. That is the right fix when a photo is simply too large — a 4000-pixel camera image dropped into a 1200-pixel layout wastes bandwidth and slows the page.
Resizing reduces file size as a side effect, but it is a different job from compression: one changes dimensions, the other squeezes the data at the same size. This tool scales images down to fit the width and height you set and always keeps the original proportions, so pictures never look stretched.
Common uses
- Scale a large camera photo down to web-friendly dimensions before uploading.
- Resize an image to fit a banner, thumbnail, or profile slot.
- Set a maximum width and height so an image fits a layout without distortion.
Helpful tips
- The tool only scales down to your maximum width and height; it does not enlarge, since enlarging cannot recover detail.
- Proportions are always preserved, so set the bound that matters most and the other dimension follows automatically.
- Resize first, then compress the smaller image for the smallest clean file.
How to use Image Resizer
- Upload the image you want to process with Image Resizer.
- Check the current dimensions, format, orientation, transparency, and file size before changing anything.
- Choose output settings based on the destination, such as web upload, email, social media, documentation, or archiving.
- Preview the result for visible quality, cropping, color changes, metadata, and final file size.
- Download the finished image and keep the original file until you confirm the exported version works where you need it.
Frequently asked questions
Should I resize or compress an image first?
Resize first when the dimensions are too large, then compress the resized result for the smallest file without unnecessary quality loss.
Will resizing make my image blurry?
Shrinking an image usually keeps it sharp. Enlarging a small image cannot add detail, so it tends to look soft or pixelated.
Is Image Resizer free, and does it work on mobile?
Yes. Image Resizer is free to use on JustBloc with no account or installation, and the page is designed to work on desktop, tablet, and mobile browsers.