There isn't a separate "portable-only" download link on the official site; instead, the standard installer gives you the option to generate a portable version. Download NVDA - NV Access
NVDA Screen Reader Portable Download: The Complete Guide The screen reader is a powerful, free, and open-source tool that enables blind and vision-impaired users to interact with Windows PCs . One of its most valuable features is the ability to create a portable copy , allowing you to carry your personalized accessibility settings on a USB drive and use them on any computer without needing administrator rights. How to Download and Create an NVDA Portable Copy nvda screen reader portable download