Image Resizer
Resize an image to exact pixel dimensions or a percentage, with the aspect ratio locked by default.
Processing: This tool runs entirely in your browser. Your input and any file you open stay on your device — nothing is uploaded to a server. Limited by your device's memory rather than a server quota. Very large images may take several seconds.
How to use the image resizer
- Choose an image file.
- Enter a new width or height — the other follows automatically.
- Download the resized image.
About this tool
Resizing changes how many pixels an image contains. Making an image smaller is safe: the extra detail is averaged away and the result usually looks sharper than the original did when scaled by a browser. Making it larger is not — enlarging invents pixels by interpolation, so the result is softer than the original, and no amount of processing recovers detail that was never captured.
Keep the aspect ratio locked unless you specifically want to distort the picture. If you need an exact width and height that does not match the original proportions, resize to fit and then crop, which loses edges rather than stretching faces.
Common uses
- Making a photo fit a profile picture requirement.
- Producing a smaller version for a blog post.
- Standardising a set of images to one width.
Frequently asked questions
- Does enlarging an image improve its quality?
- No. Enlarging interpolates between existing pixels, so the image gets bigger and softer. Start from the largest original you have.
- How do I resize without distortion?
- Leave the aspect-ratio lock on. If you need a fixed frame, resize to cover it and crop the overflow instead of stretching.
- Is there a file size limit?
- No server limit, because nothing is uploaded. Very large images are limited by your device's available memory.
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