Paper2Audio by PerfectRec Inc.

Quickly add papers to Paper2Audio (https://www.paper2audio.com)

Paper2Audio reads your research papers to you. Add a paper, then select summary or full paper mode to get an audio version. Building upon recent AI progress, we read just the relevant words from a paper (no page numbers or numbers in tables), and summarize visual elements, including
tables and figures. We can add background context too. It is 100% free with no ads.

This extension let's you add papers with a single click while you are browsing. It also let's you add paywalled or firewalled papers that you have access to.