Microsoft Edge Canary has added support for Read Aloud feature to PDF files in latest Canary update. The feature is currently available in Edge Canary 84 and it could be released to everyone with Edge 84 update later this year. Feature is powered by deep neural networks and standard online voices with 24kbps audio bitrate. It is available in the Canary version of Microsoft’s version of Chromium Edge, which was announced last year. For more details on the latest Canary version, visit the Canary Canary website or go to the Canary app.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-edge-canary-now-lets-you-read-aloud-your-pdf-files/