Image Resizer Online
Resize images to any dimensions directly in your browser. Set exact pixel size or scale by percentage. Free, fast, and private.
Drop images here or click to browse
Supports JPEG, PNG, WebP — multiple files allowed
About This Tool
The Image Resizer is a free online tool that lets you resize images to exact pixel dimensions or scale them by percentage. It supports JPEG, PNG, and WebP output formats with high-quality downscaling. All processing happens entirely in your browser — no images are uploaded to any server, ensuring complete privacy.
Key Features
- Pixel-Perfect Sizing — Set exact width and height in pixels for precise image dimensions.
- Percentage Scaling — Scale images up or down by percentage (5% to 200%) for quick adjustments.
- Aspect Ratio Lock — Keep the original proportions when resizing to prevent distortion.
- Multiple Output Formats — Save resized images as JPEG, PNG, or WebP depending on your needs.
Common Use Cases
- Resizing photos for social media (Instagram, Facebook, Twitter profile/cover images)
- Creating thumbnail images for websites and e-commerce product listings
- Scaling images to meet specific size requirements for documents and presentations
- Batch resizing product photos for online stores
- Preparing images for email signatures, avatars, and favicons
How to Use
Choose between pixel-based or percentage-based resizing. For pixels, enter your desired width (height is calculated automatically with aspect ratio lock enabled). For percentage, use the slider to set the scale. Select your output format (JPEG, PNG, or WebP), then drag and drop images or click to browse. Download your resized images individually.
Frequently Asked Questions
Will resizing reduce image quality?
Downscaling (making smaller) preserves quality well. Upscaling (making larger) may introduce blurriness as new pixels must be interpolated. The tool uses high-quality bicubic interpolation for the best results.
What is the maximum image size I can resize?
Since processing happens in your browser, the limit depends on your device's memory. Most modern devices can handle images up to 50-100 megapixels without issues.
What is the best format for web images?
WebP offers the best compression for web use, producing smaller files than JPEG with similar quality. JPEG is best for photos and wide compatibility. PNG is ideal for images requiring transparency or lossless quality.
Are my images uploaded to the server?
No. All resizing is done locally in your browser using the HTML5 Canvas API. Your images are never transmitted to any server and remain completely private.
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