A Screen Reading Extension for Firefox
NVDA software enables blind and vision impaired people to use a computer by communicating what is on the screen using a synthetic voice or braille.
NVDA (NonVisual Desktop Access) is the only screen reader for Microsoft Windows that is totally free, yet fully functional and portable. You can download it to your PC, or to portable media such as a USB stick which you can use with any computer at school, work – anywhere!