Resize images to any dimension and export as PNG, JPEG or WebP
An image resizer changes the pixel dimensions of a photo or graphic — making it smaller or larger — and exports the result as PNG, JPEG or WebP. Dimensions matter constantly: a profile photo needs to fit an exact box, an upload form caps the maximum width, a thumbnail should be a fraction of the original, and a banner has to match a precise size. Rather than crop or guess, a resizer lets you set the width and height you need and produces a clean copy at that size.
The detail that protects your image is aspect ratio: if you change width and height independently, the picture stretches and looks distorted. Keeping the ratio locked scales both dimensions together so the image stays in proportion. Shrinking an image is essentially lossless to the eye; enlarging it past its original size cannot invent detail, so it softens. This tool resizes entirely in your browser — your images are never uploaded — and lets you pick the export format, with WebP and JPEG giving smaller files and PNG preserving transparency.
Because width and height were changed in a ratio different from the original, distorting it. Keep the aspect ratio locked so both dimensions scale together; the image then stays in proportion no matter the target size.
Enlarging cannot add detail that was not captured, so an upscaled image looks softer or blockier than a native one of that size. Resizing down is essentially lossless; resizing up is best kept modest, or start from a higher-resolution source.
JPEG and WebP produce smaller files and suit photos, with WebP usually the most efficient. PNG is larger but lossless and preserves transparency, so use it for logos, icons or graphics with sharp edges or transparent backgrounds.
No. Resizing happens entirely in your browser using your device, so the image never leaves your machine. You can safely resize private photos or unpublished assets.
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