QUICK ANSWER
imageTool resizes an image to a target width and height or by percentage, can preserve its aspect ratio, and exports PNG, JPG or WebP locally in your browser.
How to use the Image resizer
- Upload an image
- Set target dimensions in pixels or choose a percentage
- Choose the output format and quality, then download
Key features
- Resize by pixels or percentage
- Lock the original aspect ratio
- Prevent accidental enlargement
- Export PNG, JPEG or WebP
Limitations
- Enlarging a low-resolution image cannot create genuine new detail
- JPEG and WebP encoding can vary slightly by browser
- Very large canvases are limited by browser memory
FAQ
About the Image resizer
Will resizing make my image blurry?
Downscaling is usually subtle. Enlarging interpolates existing pixels and cannot recover missing detail.
How do I prevent distortion?
Keep aspect-ratio lock enabled and change only the width or height.
Is transparency preserved?
PNG and WebP preserve transparency. JPEG fills transparent areas with the selected background color.
Page and tool documentation updated August 19, 2026.