Explore the challenges and solutions surrounding post-quantum signature algorithms in the WebPKI through this 30-minute technical talk. Delve into an assessment of current offerings and upcoming schemes. Examine work-arounds being considered to maintain WebPKI functionality, ranging from minor adjustments like shipping intermediates with browsers to more ambitious proposals such as Merkle Tree Certificates. Gain insights from Bas Westerbaan, a Research Engineer at Cloudflare, as he navigates the complexities of integrating post-quantum signatures into existing web infrastructure.