How to Resize an Image Without Losing Quality or Distortion
Learn how to resize an image by pixels or percentage, keep the aspect ratio and avoid blur. Follow the steps and resize your photo in your browser.
What Does Image Resizing Mean?
Resizing changes the width and height of an image in pixels.
How to Resize an Image Online
- Open the image resizer.
- Upload your image.
- Enter the target width and height.
- Download the resized image.
Image Dimensions vs Resolution
Pixel dimensions describe the width and height of a digital image. Resolution can describe pixel density or intended print detail depending on context, so these concepts should not be treated as identical.
Resizing vs Cropping
Resizing changes scale. Cropping removes part of the image.
Keep the Aspect Ratio Yourself
The resize tool takes an exact width and height. Work out the second value yourself: new height = original height × new width ÷ original width. A 4000 × 3000 photo at 1200 pixels wide should be 900 pixels high.
Why Making an Image Larger Loses Quality
Enlarging an image makes the software invent pixels between the existing ones. The picture gets bigger but no sharper, so it looks soft. Shrinking keeps quality far better, so always start from the largest original you have.
Choosing the Right Target Size
Use the exact dimensions the form, website or platform asks for. Check its help page for the current requirement instead of guessing. If you only need a smaller file, see how to compress an image.
Frequently Asked Questions
Does resizing reduce file size?
Usually yes, because fewer pixels means less data. The result of the online tool is saved as a JPG.
Can I resize by percentage?
Enter pixel values. For 50%, halve both numbers.
Try it now: Resize Image — free, in your browser.