Add your input
One JPEG, PNG, WebP, or AVIF image, plus your target width or height.
Pixel workshop
Image resizer
Get the dimensions you need without stretching the picture.
Privacy built inYour work stays with you
Private image workspace
Resize an image precisely
Set exact pixel dimensions while keeping the original aspect ratio when you want it.
Your work stays private in your browser while you use this tool.
What does image resizer do?
Set an image to exact pixel dimensions or use one of the 25%, 50%, 75%, or 100% scale shortcuts. Keep the aspect-ratio lock enabled to change one dimension without stretching the picture, then choose WebP, JPEG, PNG, or AVIF output.
- Input
- One JPEG, PNG, WebP, or AVIF image, plus your target width or height.
- Result
- A resized image in WebP, JPEG, PNG, or AVIF.
- Price
- Free
- Account
- Not required
How to use image resizer
Choose your settings
Get the dimensions you need without stretching the picture.
Save or copy
A resized image in WebP, JPEG, PNG, or AVIF.
Step-by-step guide
A practical tip
Keep the aspect-ratio lock on unless a destination explicitly requires exact width and height.
When to use image resizer
Reduce a 24-megapixel photo to a practical width for a blog article.
Create a precisely sized image for a CMS field with fixed pixel requirements.
Scale a design mockup to one-quarter or one-half of its original dimensions.
Worked example
A concrete image resizer example
- Input
- A 2400 × 1600 PNG image.
- Settings
- Width 1,200 px, aspect ratio locked, WebP at 86% quality.
- Result
- A 1,200 × 800 WebP image; the original 3:2 proportions remain unchanged.
What to expect
How it works
With the lock enabled, changing width recalculates height from the source ratio and changing height recalculates width. The browser resamples the complete image onto a canvas at the requested dimensions and encodes that canvas in the selected format. Outputs without transparency support use an opaque background.
Know before using
Limits and edge cases
- Width and height must each be 1–12,000 pixels, and the output canvas must remain below 64 megapixels for safe in-tab processing.
- Enlarging a small source creates more pixels but cannot restore texture or sharpness that the source never contained; export also drops animation and metadata.
Common questions
Image resizer FAQ
Is image resizer free to use?
Yes. Image resizer is free to use.
Does image resizer keep my work private?
Yes. Your work stays private while you use the tool — nothing you enter is uploaded.
Can I resize by entering only a new width?
Yes. Leave the aspect-ratio lock on and change the width; the height updates automatically from the source proportions. The reverse works when you edit height.
What do the percentage buttons measure?
They set both output dimensions to 25%, 50%, 75%, and 100% of the original pixel dimensions, not a percentage of the current edited values.