Image Resizer
Resize and compress JPEG, PNG, and WebP images to reduce file size.
Frequently Asked Questions
What is an image resizer?
An image resizer changes the dimensions (width and height) of images and compresses them to reduce file size while maintaining visual quality.
How do I resize an image?
Upload your image, set the desired width and height (or scale percentage), choose quality settings, and click resize. The tool outputs the resized image ready for download.
What image formats are supported?
You can upload JPEG, PNG, WebP, GIF, AVIF or BMP images and export them as JPEG, PNG, WebP or AVIF, depending on what your browser supports.
Does resizing affect image quality?
Downscaling uses high-quality resampling to minimize quality loss. For JPEG, WebP and AVIF you can adjust the quality slider to balance file size and visual fidelity; PNG output is lossless.
Is this tool free?
Yes, ToolDock's image resizer is completely free, requires no signup, and runs entirely in your browser.