OCR Translate is a Firefox browser extension designed for in-place translation of images within active tabs. This tool captures all existing and new images on a webpage, sending them to a backend server for Optical Character Recognition (OCR) and translation. The server processes the images and returns textboxes that overlay on the original images, facilitating seamless comprehension of foreign text.

The extension operates by requiring a self-hosted backend server, which can utilize pre-downloaded or customized models to function offline. Users must grant permission for the extension to access data across all visited websites, enabling it to inject scripts necessary for image processing. With detailed documentation available, users can easily set up and utilize the tool for various translation tasks.