betterArxiv is a free Chrome add-on designed to improve the experience of reading academic papers on arXiv. This tool provides a convenient feature that allows users to view the abstract of cited papers simply by hovering over citation links. This functionality aims to streamline the research process by making it easier to access relevant information without needing to navigate away from the current document.

Currently, betterArxiv operates exclusively with arXiv's HTML papers and does not support PDF files. By integrating this tool into their workflow, researchers can enhance their understanding of cited works quickly and efficiently, thus facilitating a more productive reading experience. The add-on is categorized under Browsers and specifically falls within the Add-ons & Tools subcategory.