What is an Image Resizer?
An image resizer changes a photo's pixel dimensions — its width and height — to fit a specific requirement: a profile photo size, a product image spec, or just a smaller version for faster loading. Our resizer lets you set an exact width and height, with an optional aspect-ratio lock so each image in a batch keeps its own proportions correctly instead of being stretched.
How to Resize an Image Online — Step by Step
- Upload your images. Drag and drop one or more images into the box above — add up to 20 at once.
- Set the target size. Enter a width (and height, if aspect-ratio lock is off) — the estimated size updates live per file.
- Resize and download. Click "Resize" and download individually or all at once as a ZIP.
Why Use Our Image Resizer?
- Aspect-ratio lock computes each image's own correct height automatically — no distorted photos in a mixed batch.
- Batch support for up to 20 images at once.
- Live estimated size preview as you change the target dimensions.
- Private — files are automatically deleted within 2 hours.
Frequently Asked Questions
What happens if I turn off aspect-ratio lock?▾
Every image is resized to the exact width and height you enter, which will stretch images whose original proportions don't match.
Can I resize a batch of differently-sized photos to the same width?▾
Yes — with aspect-ratio lock on, every photo is resized to the width you set, with each one's height computed automatically from its own original proportions.
Is there a maximum size I can resize to?▾
Width and height can each go up to 10,000 pixels.
Will resizing up (enlarging) reduce quality?▾
Enlarging a photo beyond its original resolution can make it look softer, since no new detail is created — resizing down generally looks sharper.
Related Tools
- Compress Image — Reduce image file size without losing quality.
- Compress JPG — Shrink JPG file size online.
- Compress PNG — Shrink PNG file size online.
- Compress JPEG — Shrink JPEG file size online.
- Compress WEBP — Shrink WEBP file size online.
- Compress HEIC — Shrink HEIC file size online.