Image Resizer is a free online tool for resizing images by percentage or custom dimensions. Supports PNG, JPG, WebP input. All processing runs locally in your browser.
What is the Image Resizer?
Resize images by percentage or custom dimensions directly in your browser. Maintain aspect ratio or set exact pixel dimensions. No data is uploaded to any server — all processing uses the HTML5 Canvas API.
How to Resize an Image
- 1
Drop or select an image
Drag and drop an image onto the drop zone, or click to browse. Supports PNG, JPG, WebP, GIF, BMP, and SVG input.
- 2
Set target dimensions
Choose resize by percentage (1–400%) or enter exact width and height in pixels. Toggle aspect ratio lock as needed.
- 3
Download resized image
Preview the resized image and download it. The output format matches the input format.