Resize Image by Percentage
Scale your image to any percentage of its original size with a live dimension preview.
Drop an image here or click to select
Max 50MB per file
or paste an image with Ctrl+V / ⌘V
Your image is processed locally. Nothing is uploaded.
How to use Resize Image by Percentage
- 1
Upload your image
Drop your image onto the tool or click to pick a file.
- 2
Set the scale percentage
Drag the slider or type a percentage. Values below 100% reduce size; above 100% enlarge the image.
- 3
Review output dimensions
The exact output width and height in pixels are shown in real time so you know the result before clicking.
- 4
Resize and download
Click "Resize" and then download the scaled image.
When percentage scaling is the right approach
Percentage-based resizing is most useful when you know how much smaller an image needs to be, rather than knowing the exact target dimensions. Reducing an image to 50% of its original size, for example, is a simple and reliable way to halve both the dimensions and the file size without needing to check or remember the original pixel count. This approach is common in workflows where the relationship between sizes matters more than hitting a specific pixel target.
Thumbnail generation is a particularly common use case. A product image at 50%, a headshot at 25%, an event banner at 75% - all maintain the original composition and aspect ratio, scaled to a fraction of the original. The live dimension preview in the tool shows the exact output pixel dimensions before you confirm, so you always know what you will get. For processing many images at the same percentage in one go, the bulk resize tool handles up to 50 files at once.
Enlarging versus reducing
The tool supports scaling from 1% up to 400%, covering both reduction and enlargement. Reductions are straightforward - the image is sampled down with smooth interpolation and the result is a smaller, proportionally identical image. Enlargements are more nuanced: scaling a raster image beyond its original size adds pixels by interpolating between existing values, which introduces softness at magnifications above approximately 150%. For enlarging images while recovering sharpness, pair a percentage resize with the sharpen image tool as a post-processing step.