Free Online Image Resizer
Change the width and height of your photos instantly. Scale image dimensions directly in your browser while maintaining quality.
Supports all image formats including JPG, JPEG, PNG, WebP, GIF, BMP, and TIFF. Your images are processed locally for privacy.
What this tool does
This tool changes the pixel dimensions of your images - making them larger or smaller. Type in a new width and height, and it resizes the photo while maintaining (or ignoring) the aspect ratio as you choose. Works with JPG, PNG, and WebP files, all processed in your browser.
How to use it
1. Upload your image
Drag a file into the tool or click to select it. You'll see the current dimensions displayed (like 4000x3000 pixels).
2. Enter new dimensions
Type your target width or height. With the aspect ratio lock enabled, the other dimension adjusts automatically to prevent stretching.
3. Download the resized image
Preview the result, then click download. The resized image saves directly to your device.
When you'd use this
Fitting images into website layouts
Your photographer sent 6000px-wide images, but your website template only displays them at 1200px. Resizing them before upload prevents slow page loads and layout breakage.
Meeting passport or visa photo requirements
Government portals reject photos that aren't exact dimensions - like 600x600 pixels for US passports. This tool lets you hit those specifications precisely.
Preparing social media graphics
Instagram posts work best at 1080x1080 or 1080x1350, YouTube thumbnails need 1280x720. Resizing your artwork to these exact dimensions prevents awkward automatic cropping.
Reducing email attachment size
Smartphone photos are often 3000-4000 pixels wide. Shrinking them to 1920px before emailing cuts the file size dramatically while still looking sharp on screens.
Creating dual-monitor wallpapers
Standard wallpapers don't span two different-sized monitors correctly. Unlock the aspect ratio and type the exact combined width of both screens for a seamless background.
What to know before using it
Enlarging reduces quality
Making a small image bigger doesn't add real detail - it just stretches existing pixels. A 500px icon blown up to 2000px will look soft or pixelated. Shrinking works great; enlarging has limits.
Aspect ratio lock prevents distortion
Keep this enabled unless you intentionally want to stretch or squash the image. Disabling it lets you force any dimensions, but people will look tall and thin or short and wide.
File size usually decreases when shrinking
Fewer pixels means less data. A 4000x3000 photo resized to 1920x1080 will have a much smaller file size even before compression.
Print vs screen dimensions are different
This tool changes pixel dimensions, not physical print size. A 3000x2400 image prints at 10x8 inches at 300 DPI, but the same file displays at different sizes depending on screen resolution.
FAQs
Will resizing make my image blurry?
Shrinking an image usually looks fine - you're just removing pixels. Enlarging makes it softer because the tool has to invent new pixels through interpolation. Small enlargements (up to 20%) are usually acceptable.
Are my images uploaded to a server?
No. The resizing happens entirely in your browser using JavaScript. Your photos stay on your computer throughout the process.
Can I resize multiple images at once?
This tool handles one image at a time for precise control. For batch resizing, you'd need desktop software or a dedicated batch tool.
What's the maximum size I can resize to?
There's no artificial limit, but browsers struggle with images over 16,000 pixels in either dimension. For most practical uses, this isn't a constraint.
Does this change the DPI/PPI setting?
No. This tool only changes pixel dimensions. DPI (dots per inch) is a print metadata setting that doesn't affect how images display on screens.
Can I make an image smaller than 1 pixel?
Technically yes, but the minimum useful dimension is 1 pixel. Anything smaller than about 10x10 becomes unrecognizable anyway.