Image Resizer
The Image Resizer changes an image's pixel dimensions entirely in your browser. Drop in a file, set a new width and height (with aspect ratio locked, or scale by a percentage), pick the output format, and download. Nothing is uploaded — the resize runs locally on your device.
Need an image at an exact size — a 512×512 avatar, a smaller thumbnail, a photo under an upload limit? This resizer scales your image to any width and height right in the browser, with high-quality smoothing and the aspect ratio locked by default, so nothing ever leaves your device.
How to use the Image Resizer
- Drop an image in, or click to choose one from your device.
- Enter a new width or height (the other follows automatically while aspect ratio is locked), or tap a scale preset.
- Pick the output format, click Resize, and download the result.
Common use cases
- Make a square avatar or profile picture at an exact pixel size.
- Shrink a large photo to fit an upload or email size limit.
- Generate a smaller thumbnail or web-ready version of an image.
Tips
- Keep aspect ratio locked to avoid stretching — unlock it only when you deliberately want a different shape.
- Resizing down then saving as WebP or JPEG gives the smallest file; combine it with the quality slider for a big saving.
Frequently asked questions
Is my image uploaded to resize it? +
No. The resize happens entirely in your browser using the Canvas API — your image never leaves your device and nothing is sent to a server.
Will resizing blur or distort my image? +
Downscaling uses high-quality smoothing, so it stays sharp. Distortion only happens if you unlock the aspect ratio and set a width and height that don't match the original proportions.
Can I make an image larger? +
Yes, you can enter dimensions bigger than the original, but upscaling can't add detail that isn't there, so enlarged images will look softer than the source.