NVDA - Screen Reader for Windows
Empowering blind and vision impaired people to independently interact with the Windows Operating System and popular third-party applications through synthetic speech and refreshable braille displays.
Why NVDA?
NVDA (NonVisual Desktop Access) is developed by NV Access in partnership with a dedicated open source community. It enables blind and vision impaired people to increase their chances at education and employment, and to participate in and contribute to society.Free & Open Source
Completely free to download, use, and share. No licensing fees ever.
50+ Languages
Translated into over 50 languages with an active translation community.
Extensible
Powerful add-on system to extend functionality and support more applications.
Key Features
Speech Synthesis
Multiple voice engines including eSpeak, SAPI5, and OneCore for natural-sounding speech output
Braille Displays
Support for over 50 refreshable braille displays from leading manufacturers
Browse Mode
Navigate web pages and documents efficiently with quick navigation keys
Vision Enhancements
Screen curtain, focus highlighting, and other vision enhancement features
Get Started
Installation Guide
Step-by-step installation instructions for all NVDA versions
Quick Start Guide
Get up and running with NVDA in minutes
User Guide
Complete guide to using NVDA effectively
Keyboard Commands
Reference of all NVDA keyboard shortcuts
For Developers
Development Setup
Set up your development environment to build NVDA from source
Create Add-ons
Extend NVDA’s functionality with custom add-ons
Architecture Guide
Understand NVDA’s internal architecture and components
API Reference
Complete API documentation for add-on developers
Community
NVDA is built and maintained by a global community of developers, translators, and users.Get Support
Find help from the NVDA community through mailing lists and forums
Report Issues
Report bugs and request features on GitHub
Contribute
Join the community and contribute code, translations, or documentation
Product Vision
Learn about NVDA’s guiding principles and future direction
Supported Platforms
NVDA runs on Microsoft Windows 10, Windows 11, and Windows Server 2016 and later. Both 32-bit and 64-bit architectures are supported.
License
NVDA is licensed under the GNU General Public License version 2 or later. This ensures it remains free and open source forever.Read the License
View the complete license text on GitHub