WebSonic - Web Browser Auditory Feedback is a free browser add-on that provides auditory feedback for many browser events. It can be very helpful for visually impaired users, as well as for users who prefer to hear auditory feedback for various browsing events.

When you load a page in your browser, it can make the text in the page load in an audible manner. This extension has the option to set the volume and the pitch of the sound as you prefer.

The volume and pitch can be adjusted to match the type of the page: it can be the same, higher or lower than the volume of the page itself. This means that you can hear the sound of a text in your web browser only when the text is in bold, italic, or links. It can also be useful for users who are blind, as well as for users who prefer to listen to the sound of the page.

You can customize the volume and the pitch of the audio as you prefer.

You can turn the extension off for the site you're visiting.