What is the Image Resizer Tool?

A tool for resizing image files in JPEG, PNG, GIF, and WebP formats to specified dimensions. All processing is done in your browser, so image data is never sent to external servers.

Key Features:

• Specify width and height in pixels or percentage
• Lock aspect ratio to maintain proportions
• Preview images before and after resizing with file size comparison
• Instantly download processed results

Images are resized immediately upon upload, and size changes are reflected in real-time.

When This Tool is Useful

When you need to adjust image sizes for websites or blogs, this tool makes resizing simple and quick.

Use Cases:

• Resize blog post images to 800px width
• Reduce photos to 50% size for social media posts
• Create thumbnails to improve page loading speed

Choosing Resize Method

Pixel Specification

Specify width or height in exact pixel values. Setting 800px will resize the image to exactly 800px. Both enlargement and reduction are supported.

Percentage Specification

Specify as a ratio relative to the original image size. Selecting 50% will make both width and height half of the original. Choose from 25%, 50%, 75%, 150%, or 200%.

Lock Aspect Ratio

When aspect ratio lock is enabled, images are resized while preserving their original proportions. Changing the width automatically adjusts the height, and vice versa.

When disabled, you can specify width and height independently, allowing free ratio changes. However, setting values different from the original aspect ratio may cause image distortion.

How to Use

1. Drop or click to select an image
2. Choose resize method (pixel or percentage)
3. Specify width and height
4. Review the preview and download

The preview updates in real-time as you change the size.