Ascribo PDF Viewer Extension is a Chrome platform tool developed by ironyman13, available for free. This extension falls under the Browsers category, specifically in Add-ons & Tools. It serves as a PDF viewer that enables users to annotate and engage in discussions on arXiv articles, aiming to enhance the accessibility of academic papers through collaborative reading.

By enabling the extension, users can conveniently open PDF URLs directly in Ascribo's PDF viewer, facilitating a seamless experience for interacting with and sharing thoughts on scholarly content. Ascribo offers a platform for crowdsourcing paper reading, fostering a collaborative environment for engaging with academic articles.