Image Resizer
Resize images by specific pixel dimensions or percentages with aspect ratio locking.
Click to upload an image or drag and drop here
Image Resizing & Aspect Ratio Scaling
Resize digital images to exact width and height pixel dimensions while maintaining original proportions.
Frequently Asked Questions
Why should I lock aspect ratio when resizing images?
Locking aspect ratio automatically adjusts height when width is changed, preserving exact visual proportions and preventing stretched images.
What image file formats are supported for resizing?
Our resizer supports PNG, JPEG, WebP, GIF, and SVG images directly inside your browser.
Does image resizing run in local browser memory?
Yes. All pixel scaling algorithms run in your computer's RAM using local canvas hardware rendering.
Optimize Image Dimensions for Web Performance
Large uncompressed images are the single biggest cause of slow webpage load times. Resizing oversized camera photos (e.g. 4000px wide down to 1200px) reduces file payloads by up to 80%, eliminating Layout Shift (CLS) and dramatically accelerating Largest Contentful Paint (LCP) performance scores for desktop and mobile visitors.