Image Resizer
Resize images by pixels with aspect ratio locked.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Resizes an image to exact pixel dimensions or by percentage, with an optional aspect-ratio lock and high-quality smoothing. Presets for common social and screen sizes make it quick to prepare assets.
How to use it
- Load an image to see its current dimensions.
- Enter a target width or height, or pick a preset.
- Resize and download the result.
Frequently asked questions
Does resizing up improve quality?
No. Enlarging cannot invent detail; it only interpolates. Always start from the largest original you have.
Which resampling quality is used?
The browser’s high-quality smoothing is requested on the canvas context, with a step-down pass for very large reductions.
Keep going
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