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IMAGE TOOLS · ONLINE
Resize images Online
Resize one or many images to exact or maximum dimensions.
Resize one or many images to exact or maximum dimensions. Keep the source until you've opened and checked the downloaded result.
For web use, combine resizing with image compression when file size is also important.
Choose image files
or drag and drop from your device
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Resize images: the job it actually does
Resize one or many images to exact or maximum dimensions.
Aspect ratio decides whether resizing crops or leaves space
Exact dimensions can conflict with the source image’s proportions. A cover-style fit may crop edges; a contain-style fit can leave empty space. Use the preview to choose which compromise fits the destination.
Maintain aspect ratio unless you intentionally want stretching.
Where Resize images stops
Use Crop Image when composition matters more than exact dimensions. Use compression when the dimensions are already correct and only file size needs work.
Example and result checks
A 4000 × 3000 photo can be resized to 1200 × 900 while keeping the same 4:3 aspect ratio. Setting both dimensions independently to unrelated numbers could distort the subject. Choose dimensions based on the destination: a thumbnail needs fewer pixels than a large editorial image.
Compare the result at 100% zoom, especially around small text, hair and high-contrast edges. Enlarging a small image does not recover missing detail, and repeated exports can reduce quality when using a lossy format. Keep the original so you can return to it if the platform changes its requirements.
FAQ
What does Resize images actually do?
Resize one or many images to exact or maximum dimensions.
What limitation matters most?
Exact dimensions can conflict with the source image’s proportions. A cover-style fit may crop edges; a contain-style fit can leave empty space. Use the preview to choose which compromise fits the destination. Maintain aspect ratio unless you intentionally want stretching.
Related tools
After Resize images, change something else only if the exported image still has a separate size, crop, format or metadata problem. The image-format guide has broader context if you need it.