Image Resizer
Resize images to any dimension while maintaining aspect ratio.
Drop an image here or click to upload
What is Image Resizer?
Image resizing changes the dimensions (width and height) of an image. This tool lets you resize images to exact pixel dimensions or by percentage, with optional aspect ratio preservation. All processing happens in your browser for instant results and privacy.
How to Use This Tool
- Upload or drag and drop your image
- Enter new width and/or height in pixels
- Use presets (50%, 75%, 150%, 200%) for quick resizing
- Click Resize and download the result
Common Use Cases
- Creating profile pictures at exact dimensions
- Resizing images for social media posts
- Preparing thumbnails for websites
- Scaling down large photos for email
Frequently Asked Questions
Will resizing affect image quality?
Upscaling (making images larger) can reduce quality as pixels are interpolated. Downscaling (making smaller) generally maintains quality. For best results, start with the highest resolution source image.
What does 'maintain aspect ratio' mean?
Aspect ratio is the proportional relationship between width and height. When enabled, changing one dimension automatically adjusts the other to prevent distortion (stretching or squishing).
What image formats are supported?
This tool supports PNG, JPG, WebP, and GIF uploads. Output is always PNG to ensure quality and transparency support.
Is my image uploaded to a server?
No, all resizing happens locally in your browser using the HTML5 Canvas API. Your images never leave your device.