Image Resizer — Free Online Tool
Resize images by pixels or percentage online for free. Supports JPG, PNG, WEBP, and GIF. Maintain aspect ratio automatically. No signup needed.
Click to upload image
About Image Resizer
Resizing images is one of the most common tasks in web design, social media management, and digital publishing. Our image resizer lets you set an exact pixel width and height, resize by percentage, or choose from preset sizes for common platforms like Instagram, Twitter, Facebook, YouTube, and LinkedIn. Aspect ratio locking prevents distortion. The tool supports JPG, PNG, WEBP, GIF, and BMP formats and runs entirely in your browser for instant privacy. Output quality can be adjusted to balance file size against sharpness.
Frequently Asked Questions
Can I maintain the aspect ratio when resizing?
Yes — aspect ratio lock is enabled by default.
What image formats are supported?
JPG, PNG, WEBP, GIF, and BMP are all supported.
Can I resize multiple images at once?
Yes — batch mode lets you resize multiple images to the same dimensions.
Will resizing reduce image quality?
Enlarging images reduces quality slightly. Reducing maintains quality. You can set output quality percentage.
Are there preset sizes for social media?
Yes — presets for Instagram, Twitter, Facebook, YouTube, and LinkedIn are included.