Speak Subtitles Extension is a free Chrome add-on developed by dgzornoza. This accessibility extension allows users to play closed captions in videos using voice synthesis, providing a pseudo real-time translation of the video content. Currently, the extension is functional on PluralSight videos.

With Speak Subtitles Extension, users can enhance their video watching experience by enabling closed captioning and having the text read out loud through voice synthesis. This feature is particularly beneficial for individuals with hearing impairments or those who prefer to read along while watching videos.

At present, the extension is compatible with videos from PluralSight, a popular online learning platform. The developer has plans to expand the functionality to include more video sources based on user demand in future updates.

Overall, Speak Subtitles Extension is a valuable tool for adding accessibility to videos by providing closed captioning with voice synthesis. It is easy to use and enhances the viewing experience for a wide range of users.