Free Online Image Resizer
Resize images by exact dimensions or scale by percentage. Perfect for social media, websites, and email attachments.
Drag and drop your files here
or
Supports JPG, PNG, WebP, and other image formats.
Resize Settings
Why Resize Images?
Image resizing is essential for web optimization, social media posting, and email attachments. Properly sized images load faster, consume less bandwidth, and provide better user experience across all devices.
Features
- Resize by Dimensions: Specify exact width and height in pixels
- Resize by Percentage: Scale images from 1% to 200% of original size
- Aspect Ratio Lock: Automatically maintain proportions when resizing
- Batch Processing: Resize multiple images at once
- Instant Preview: See original and resized dimensions before download
- Download Options: Download individual files or all as ZIP archive
How to Resize Images
- Upload Images: Drag and drop or click to select images (JPG, PNG, WebP, etc.)
- Choose Mode: Select "By Dimensions" for exact pixel sizes or "By Percentage" to scale
- Set Parameters: Enter width/height or adjust the scale slider
- Toggle Aspect Ratio: Keep enabled to prevent image distortion
- Process & Download: Click "Resize Images" and download your resized files
Common Use Cases
- Social Media: Resize images to platform-specific dimensions (Instagram 1080×1080, Facebook 1200×630, Twitter 1200×675)
- Website Optimization: Reduce dimensions for faster page load times
- Email Attachments: Scale down large photos to fit email size limits
- Profile Pictures: Create thumbnails and avatars at standard sizes
- Print Preparation: Resize images to specific DPI requirements
Frequently Asked Questions
Does resizing reduce image quality?
When scaling down, quality loss is minimal. When scaling up (enlarging), some quality degradation may occur as pixels are interpolated. For best results, start with high-resolution source images.
What does "maintain aspect ratio" mean?
Aspect ratio is the proportional relationship between width and height. Maintaining it prevents distortion. When enabled, specifying just width or height will automatically calculate the other dimension.
Can I resize images larger than their original size?
Yes, you can scale images up to 200% using percentage mode or specify larger dimensions. However, upscaling won't add detail and may result in pixelation or blur.
What file formats are supported?
Our tool supports all common web image formats including JPG, PNG, WebP, GIF, BMP, and more. Output is saved as PNG to preserve quality.
Is there a limit to how many images I can resize?
No limits! Resize as many images as you need. All processing happens in your browser, ensuring privacy and speed without server uploads.