Resize Image by Percentage Online for Free
Sometimes you don't know, or care about, exact pixel dimensions — you just want an image at half its size, a third larger, or scaled to a specific fraction for a template that expects proportional shrinking rather than a fixed width. This tool resizes images by percentage instead of fixed pixels, scaling both width and height together so the image's proportions never change.
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Resize Image by Percentage Online for Free
Sometimes you don't know, or care about, exact pixel dimensions — you just want an image at half its size, a third larger, or scaled to a specific fraction for a template that expects proportional shrinking rather than a fixed width. This tool resizes images by percentage instead of fixed pixels, scaling both width and height together so the image's proportions never change.
Enter a percentage above 100 to enlarge an image, or below 100 to shrink it — 50% halves both dimensions, 200% doubles them, and so on. Because the same scale factor applies to width and height simultaneously, there's no separate aspect-ratio toggle to worry about here: the output is always geometrically identical to the source, just larger or smaller.
This is useful whenever you're working relative to an unknown or varying source size — shrinking a batch of camera photos that all came in at different resolutions down to, say, 25% of their original size, or preparing a set of screenshots for a document where "half size" matters more than an exact pixel count. Resizing happens entirely in your browser via the Canvas API, so nothing is uploaded and results appear almost instantly.
Enlarging past 100% works the same way as scaling up with the standard resize tool: the browser estimates new pixels rather than inventing real detail, so heavy enlargement will look softer than the original. Drop in one image or a whole batch — each is scaled by the same percentage and, for multiple files, bundled into a single zip download.
Common questions
Percentage resizing scales width and height by the same factor relative to each image's own original size, so a 50% resize always halves that image regardless of its starting resolution. Pixel-based resizing instead targets one fixed width or height for every image, which can scale different-sized source photos by different amounts.
The image is enlarged rather than shrunk — 150% makes it one and a half times larger in both dimensions. As with any enlargement, expect some softening of detail since the browser is estimating new pixels rather than capturing extra real detail.
Yes — that's exactly what this tool is built for. Each image in the batch is scaled by the same percentage relative to its own original size, so a mix of resolutions stays proportionally consistent.
No — width and height are always scaled by the identical factor, so the image's proportions are preserved exactly. There's no separate aspect-ratio setting to get wrong.
Yes — resizing happens locally in your browser using the Canvas API. Nothing is uploaded, there's no sign-up, and there's no limit on how many images or how often you resize.