Scale an image to precise pixel dimensions or a percentage of the original. Keep the aspect ratio locked or stretch freely.
100% Local
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Upload an image to resize it
How to Use Image Resizer
- Upload an image โ click the drop box, drag a file in, or paste with Ctrl/โ+V.
- Choose the mode โ Pixels for exact width/height, Percentage to scale relative to the original.
- Set dimensions โ type width and height. With Lock aspect ratio checked, changing one updates the other automatically.
- Pick the output format and adjust quality if you chose JPG/WebP.
- Download the resized image.
When to use percentage vs. pixels
Use pixels when the destination expects a fixed size (e.g. an avatar at 512ร512, an Open Graph image at 1200ร630). Use percentage when you want to roughly halve or double an image without caring about the exact number.
Features
- Pixel and percentage resize modes.
- Optional aspect-ratio lock so the image never distorts.
- Output to PNG (lossless), JPG or WebP with adjustable quality.
- High-quality image smoothing on downscale.
- All processing runs locally in your browser. Your data is not uploaded to any server.
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