  The research content hosted by arXiv is not fully accessible to everyone due
to disabilities and other barriers. This matters because a significant
proportion of people have reading and visual disabilities, it is important to
our community that arXiv is as open as possible, and if science is to advance,
we need wide and diverse participation. In addition, we have mandates to become
accessible, and accessible content benefits everyone. In this paper, we will
describe the accessibility problems with research, review current mitigations
(and explain why they aren't sufficient), and share the results of our user
research with scientists and accessibility experts. Finally, we will present
arXiv's proposed next step towards more open science: offering HTML alongside
existing PDF and TeX formats. An accessible HTML version of this paper is also
available at https://info.arxiv.org/about/accessibility_research_report.html
