Sometimes you do not care about exact pixels. You just want the image at half its size, or 25 percent smaller. Resizing by percentage is the natural way to do that.
When percentage beats pixels
If you have a batch of images at different sizes and want them all reduced by the same proportion, percentage keeps each one balanced relative to its original. It is also faster when you are eyeballing a result rather than meeting a strict pixel spec.
How to resize by percentage
- Open Resize by Percentage.
- Add your image.
- Enter a percentage. 50 percent halves the dimensions, 200 percent doubles them.
- Download the result.
What the numbers actually do
Resizing to 50 percent halves both the width and the height, which means the file area drops to roughly a quarter. That is why scaling down even a little cuts file size fast. Scaling above 100 percent enlarges the image, but it cannot invent detail that was not captured, so very large jumps look soft.
Pair it with compression
Once your image is the right proportion, send it through the Image Compressor to trim the file further. For an exact pixel target instead, switch to Resize by Pixels.
Frequently asked questions
What does resizing to 50 percent do?
It halves both the width and the height. Because area scales with both sides, the image becomes about one quarter of its original pixel count.
Can I enlarge an image by percentage?
Yes, set a value above 100 percent. Keep in mind that enlarging cannot add real detail, so large increases can look soft.
Is percentage or pixel resizing better?
Use percentage when you want a proportional change, and pixels when you need to hit an exact width or height.