What is Image Resize?
Image Resize is a free online tool that lets you change the width and height of photos and images. Perfect for web uploads, social media posts, email attachments, and more.
All processing happens in your browser — no server uploads needed. Features include aspect ratio lock, percentage scaling, and batch processing.
Key Features
Pixel/Percentage Resize
Resize images by specifying exact pixel dimensions or a percentage scale.
Aspect Ratio Lock
Maintain original proportions while resizing to prevent image distortion.
Batch Processing
Upload and resize multiple images at once with the same settings.
Format Conversion
Convert to JPG, PNG, or WebP while resizing in one step.
How to Use
- Upload Images — Drag and drop or click to upload your images.
- Set Dimensions — Enter desired size in pixels or percentage. Use aspect ratio lock for convenience.
- Resize — Click the Resize button to process instantly.
- Download — Save individual images or download all at once.
Use Cases
Website Image Optimization
Resize images to appropriate dimensions for faster page loading.
Social Media Sizing
Convert images to fit Instagram, Facebook, and other platform requirements.
Email Attachment Size
Reduce large images to fit within email attachment limits.
Profile Photo Resize
Precisely resize images to match profile picture specifications.
Frequently Asked Questions
Does resizing reduce image quality?
Downsizing has virtually no quality loss. Upscaling may cause slight quality degradation depending on the scale factor.
What is aspect ratio lock?
When enabled, entering either width or height will automatically calculate the other dimension to maintain the original proportions.
What file formats are supported?
JPG, PNG, WebP, GIF and most image formats are supported. You can also change the output format to JPG, PNG, or WebP.
Are images uploaded to any server?
No, all resizing is performed locally using the browser's Canvas API. Images are never transmitted to any external server.
Can I resize multiple images at once?
Yes, you can upload multiple images and batch resize them with the same settings simultaneously.
Privacy Notice
This tool processes all images in your browser. Images are never sent to or stored on any server, and no personal data is collected.