Resize images to exact dimensions or by percentage online for free. Maintain aspect ratio and quality for any size requirement. No signup required.
First time here? Upload your image Your input is processed locally and disappears when you close the tab.
Whether you're preparing a hero image for your website, a thumbnail for a video, or a photo that fits an upload limit, getting exact dimensions matters. Our free image resizer online lets you change any image's width and height in seconds — by precise pixel values or by percentage — without installing software or creating an account.
Use it to reduce image dimensions for faster-loading pages, scale an image online to meet social media specs, or resize a photo to a fixed size. Enter custom pixels with aspect-ratio lock so proportions stay intact, or tap the 25%, 50%, 75%, and 100% scale buttons for quick downscaling. Handy presets cover common sizes like 1920×1080, 1280×720, and 256×256, and you can export as PNG, JPEG, or WebP with an adjustable quality slider. A side-by-side preview shows the original and resized file sizes, plus a warning if you upscale beyond the source.
Every resize runs entirely in your browser using the HTML canvas — your images are never uploaded to a server. Pair the resizer with our Image Compressor to shrink file size further, the Image Cropper to trim to the perfect frame, or the PNG to JPG Converter to switch formats before publishing.
Upload your image
Enter new width and/or height
Toggle aspect ratio lock if needed
Download the resized image
Drop an image or click to upload
Resize to any dimensions · processed locally