This document summarizes a large-scale study of web accessibility that analyzed over 28 million web pages from the Portuguese web. The study found that (1) only 56% of pages passed basic accessibility checkpoints, (2) page complexity and size were correlated with accessibility rates, with smaller pages tending to score better, and (3) warnings around accessibility issues were more prevalent than expected and open to different interpretations. The study highlights ongoing challenges in fully evaluating web accessibility at scale.