Resize by Percentage
Scale images up or down by percentage. Maintain aspect ratio automatically.
- Free to use
- Browser-based processing
- No account required
- Files never uploaded
About Resize by Percentage
Resize by Percentage scales an image up or down relative to its current size — set it to 50% to halve the dimensions, or 200% to double them. Because it works from a ratio, the aspect ratio is always preserved automatically. It is the quickest way to shrink a set of images proportionally without doing pixel math, and it runs entirely in the browser.
How to Use Resize by Percentage
- 1
Upload an image
Add the image you want to scale.
- 2
Enter a percentage
Type a value below 100% to shrink or above 100% to enlarge. The new pixel dimensions are previewed for you.
- 3
Download
Save the scaled image once the size looks right.
Frequently Asked Questions
What percentage should I use?
50% halves both width and height (and roughly quarters the pixel count); 25% is a strong reduction for thumbnails. Pick the value that gives the dimensions you need.
Does it keep the aspect ratio?
Always. Scaling by percentage applies the same factor to width and height, so the proportions never change.
Can I enlarge past 100%?
Yes, but upscaling can't invent detail, so large enlargements may look soft. For modest increases the result is usually fine.
Are files uploaded?
No. The scaling runs locally in your browser.