How resize image works
Resize an image when a website, document or marketplace asks for specific pixel dimensions. Set the width or height and keep the aspect ratio checked to avoid stretching people, products and logos. Uncheck it only when the destination requires an exact, different shape.
Your browser draws the original into a canvas with the requested width and height. The exported file has new pixel dimensions while the source stays unchanged. The quality and final size may differ by format and browser implementation; inspect the downloaded result before publishing.
Steps
- Select a JPG, PNG or WebP image.
- Adjust the available controls for your task.
- Process and download the output. Keep the original as a backup.
Formats and limits
Upscaling adds pixels but cannot recover missing detail. Input decoding depends on your browser. Files are limited to 25 MB each and 40 megapixels to protect browser memory.
Privacy
The processing code runs locally in your browser. This tool does not upload the selected image to Do The IMG. Avoid sharing downloaded files if they contain sensitive content.
Common questions
What does keep aspect ratio do?
Changing one dimension automatically recalculates the other from the source proportions.\nWill enlarging make an image sharper? | No. Browser resizing adds interpolated pixels but cannot restore missing detail.