Image Resizer
Upload an image and resize it to the exact width and height you need — for avatars, banners, thumbnails or social posts. Keep the aspect ratio locked or override it freely, then download the resized image.
What this means
Resizing scales the pixels of an image to new dimensions. Keeping the aspect ratio preserves proportions; overriding it stretches or squashes the picture.
How we calculate it
Formula
New width × new height pixels, re-sampled from the original using the canvas API.Worked example
Make a 1200×800 photo fit a 300×300 avatar slot.
- 1Upload your image.
- 2Enter the target width and height.
- 3Download the resized image.
Important assumptions
- Enlarging a small image reduces quality because no new detail is created.
Frequently asked questions
Will resizing reduce quality?
Shrinking usually looks fine; enlarging can blur. For sharp upscales, use a dedicated AI upscaler.
Can I crop at the same time?
This tool resizes. Setting custom width and height with the aspect ratio unlocked effectively crops by stretching.
Guide
Image Compressor Guide: Shrink Files Without Visible Loss
Fast pages need small images. Here is how compression works and how to find the quality sweet spot.
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