Image Resizer
Free online image resizer. Resize PNG, JPG, and WebP images to exact pixel dimensions.
How to Use the Image Resizer
Upload your image, enter width and/or height in pixels. Use the lock icon to maintain aspect ratio. Download the result.
About This Tool
Social media platforms, e-commerce sites, and email services all have specific image dimension requirements — Instagram posts are best at 1080×1080 pixels, Facebook covers at 820×312, product photos on Amazon at 2000×2000. Uploading the wrong size leads to cropping, stretching, or poor display quality. This resizer lets you set exact pixel dimensions with an optional aspect ratio lock so your images are never distorted. The resize uses the browser’s Canvas API with high-quality bicubic interpolation. Your images are never uploaded to a server — all processing happens locally on your device.
Frequently Asked Questions
Are my images uploaded to a server?
No. All resizing happens locally in your browser using the Canvas API. Your images never leave your device.
What file formats are supported?
The Image Resizer supports PNG, JPG (JPEG), and WebP formats.
Is there a file size limit?
No hard limit. Very large images may be slower to process but will still work.
Will resizing make my image blurry?
Enlarging an image beyond its original dimensions (upscaling) will reduce sharpness because the browser must interpolate new pixels. Reducing dimensions (downscaling) generally preserves quality well. For best results, start with the highest resolution original available.
Can I resize multiple images at once?
This tool processes one image at a time. Upload your image, set the dimensions, download the result, then upload the next. For batch processing, consider using the command-line tool ImageMagick.