Resize images online
Need to fit an image to exact dimensions? With this tool you resize images with pixel values or percentage scaling, directly in the browser. Perfect for profile pictures, thumbnails, social media or print.
How to do it
- Upload the images you want to resize by dragging and dropping.
- Choose mode: enter exact pixels (e.g. 800x600) or percent (e.g. 50%). Enable "Keep aspect ratio" to avoid distortion.
- Click "Resize" and download the scaled images.
All processing happens locally in your browser — your images never leave your computer.
Why resize images?
Images from modern cameras and phones often have much higher resolution than needed. A 12 megapixel image (4032x3024) can be 5-10 MB, but for a web page 1200 pixels wide is often sufficient — resulting in a file size under 200 KB. Resizing is important for several reasons. Faster loading times on the web — Google recommends that images should not be larger than what is displayed. Adaptation to specific requirements — profile pictures (400x400), banners (1920x400), social media images (1200x630 for OG images). Reduced storage usage — halve the dimensions and the file size decreases to approximately one quarter. The tool offers two modes: pixels and percent. With pixels you specify exact width and height. With percent you scale relative to the original size — 50% gives half the image size. The "Keep aspect ratio" function ensures the image is not distorted. All image scaling happens with the Canvas API in your browser. Images are never uploaded to any server.
Frequently Asked Questions
Can I make an image larger?
Yes, you can scale up (e.g. 200%), but quality may decrease. Upscaling creates new pixels through interpolation, which can produce a blurry image.
What does "Keep aspect ratio" mean?
When enabled, the other dimension is calculated automatically based on the image's original ratio. Enter only width and height is set automatically, or vice versa.
Can I resize multiple images at once?
Yes, upload multiple images and all are scaled with the same settings. You can download them individually or as a ZIP file.