Image Resizer troch Image Resizer

Image Resizer lets you resize and compress images directly in Firefox.

Choose one or more JPEG, PNG, or WebP files, set width and height, keep the aspect ratio or change dimensions independently, choose an output format, and download the processed images.

The extension processes images locally in Firefox. It does not upload images to a server, does not require an account, and does not collect analytics or browsing history.