Image Resizer
Resize images while maintaining aspect ratio
Resize Image
Drop file here
Supports JPEG, PNG, GIF, and WebP.
All processing is done securely in your browser and never uploaded to a server.
What is Image Resizer?
A free browser-based image resizing tool. Easily resize JPEG, PNG, GIF, and WebP images to your desired dimensions. All image processing happens in your browser, so your files are never uploaded to any server.
Simply drop an image to instantly resize it, with real-time preview of size changes. Perfect for preparing blog images, adjusting photos for social media, and other everyday image editing tasks.
Key Features
- Pixel & Percentage Options: Freely set width and height
- Aspect Ratio Lock: Automatically maintain proportions
- Real-time Preview: Instantly see resize results
- File Size Display: Compare before and after sizes
- Privacy Protection: No server uploads required
Resize Methods
📐 Resize by Pixels
Specify width and height in pixel units. Useful when you need precise dimensions like "800px wide".
Great for standardizing blog featured images to 800px width or matching social media recommended sizes.
Resize by Percentage
Specify as a ratio of the original image size. Selecting "50%" makes both width and height half of the original.
Choose from five preset options: 25%, 50%, 75%, 150%, or 200% for quick overall size adjustments.
Aspect Ratio Lock Feature
When aspect ratio is locked, images resize while maintaining their original proportions. Changing the width automatically adjusts the height, preventing distortion.
When unlocked, you can set width and height independently. However, using values that differ from the original aspect ratio may stretch or compress the image.
Use Cases
Preparing Blog & Website Images
Standardize featured images to 800px width or create thumbnails to improve page loading speed.
Adjusting Images for Social Media
Resize photos to match Instagram or Twitter recommended dimensions, preventing automatic cropping during upload.
Reducing File Size for Email
Shrink large photos to 50% or 25% to reduce file size and avoid email attachment limits.
Standardizing Product Images
Resize product photos to uniform dimensions for e-commerce sites or catalogs, maintaining visual consistency.
How to Use
- Drag and drop an image file into the drop area, or click to select
- Choose resize method (pixels or percentage)
- Enter width and height, or select percentage
- Check the preview for resize results and file size
- Click download button to save
The preview updates in real-time as you change the size.
Frequently Asked Questions
Will image quality degrade?
Enlarging images may result in pixelation. When reducing size appropriately, noticeable degradation is minimal.
Can I batch resize multiple images?
Currently, images are processed one at a time. For multiple images, upload them individually.
What image formats are supported?
Supports JPEG, PNG, GIF, and WebP formats. The output maintains the original format.
Usage Notes
Extremely large enlargements may result in poor quality and blurry appearance. When making images larger than the original, check the preview to verify the final result.