Ensuring access to digital content for everyone is one of the core principles of Open Library & their parent organization, the Internet Archive. To ensure that this is true for all patrons, regardless of ability, this capstone project focused on testing Open Library’s code-base for digital accessibility. A test set of twenty pages was created for a WCAG 2.1 audit. Testing and remediation were done with the help of Open Library’s network of Open-Source contributors. Accessibility policies and documentation were drafted to ensure compliance continues in the future.