Resize any image to exact pixel dimensions or a percentage, keeping the aspect ratio if you want.
🔒 This tool runs entirely in your browser. Nothing you enter or upload is sent to our servers.
How to use the Image Resizer
- Drop an image or click to choose one.
- Enter the new width or height (the other follows if the aspect ratio is locked), or a percentage.
- Choose the output format and click Download.
About this tool
Many services require specific dimensions: 1200×630 for social sharing images, 1080×1080 for Instagram, 1280×720 for YouTube thumbnails, 400×400 for profile pictures. This tool lets you hit those numbers exactly, with high-quality downscaling done in your browser.
Common presets are included; use “Fit” to shrink without cropping or “Fill” to crop to the exact shape.
Frequently asked questions
Will enlarging an image make it blurry?
Upscaling can’t add real detail, so small images enlarged a lot will look soft. Downscaling always looks good.
How do I keep the proportions?
Leave “lock aspect ratio” ticked. Change either width or height and the other adjusts automatically.
What does Fill do?
Fill scales the image to cover the target size and crops the excess from the centre, so you get exactly the requested dimensions without distortion.