Free image resizer
Resize and compress images in one pass.
Set exact pixel dimensions, preserve the aspect ratio, control output quality, and download a smaller PNG, JPG, or WebP image.
Browser workspace
Your file stays on this device
Drop an image or choose a file
PNG, JPG, or WebP up to 25 MB
Processed locally in your browser
How it works
From source file to finished image.
- 01
Select the image you want to resize or compress.
- 02
Enter a width or height and choose the output quality and format.
- 03
Create the optimized image, compare its size, and download it.
Files stay on your device
Image processing happens locally in the browser. There is no upload queue and no copy stored by Geiger.
Fast by default
The tools start as soon as your browser reads the image, without waiting for a remote processing server.
Useful output controls
Choose format, dimensions, crop area, and quality instead of accepting a one-size-fits-all export.
Common questions
What to know before you convert.
These tools use standard browser image APIs. Results can vary slightly between browsers, especially at very low quality settings.