Resize image | Optimize Your Images Instantly
Resize images online by uploading a photo and setting dimensions or file size in KB. Ideal for website, social media, or email optimization while preserving quality.
Upload Image
or drag and drop image here
JPG PNG GIF WebP
Options
%
92
Original size -
New size -
File size -
Preview
No image selected. Upload one to start.
How to Resize an Image
1
Upload Your Image
Upload your image using the button or drag & drop
2
Choose Unit
Select your preferred unit (pixels or percentage)
3
Select Dimension
Choose which dimension to adjust (width or height)
4
Set New Size
Enter the new size value
5
Download Result
Preview the result and download
Key Features
Maintain Aspect Ratio
Keep image proportions intact while resizing
Multiple Units
Resize using percentages or exact pixel values
Real-time Preview
See changes instantly as you adjust values
High Quality Output
Optimized resizing for best quality results
Common Use Cases
Resize images for social media profiles
Adjust photos for website content
Prepare images for printing
Optimize images for email attachments
Frequently Asked Questions
Use the constrain proportions option to maintain the aspect ratio, and avoid enlarging images beyond their original dimensions. Reducing size generally preserves quality better than increasing it.
This tool supports JPG, PNG, GIF, and WebP formats. Simply upload your image and set the desired width or height in pixels or as a percentage.
Yes, switch the unit to Pixels and enter your desired width or height. Enable constrain proportions to automatically calculate the other dimension, or disable it to set both independently.
No. The resizing happens entirely in your browser using HTML5 canvas. Your image never leaves your device, so there are no upload limits and your photos stay private.
Reduce the width or height, then choose JPG or WebP as the output format and lower the quality slider. WebP usually produces the smallest files for the same visual quality.
How Do I Resize an Image?
To resize an image, upload it and change the width and height in pixels (or by percentage), or shrink it to a target file size such as 100 KB. This online image resizer works free in your browser, with no software to install. It is ideal for trimming photos for faster uploads, email attachments, and web pages.