A recent announcement was posted in the plotly forum, reproduced below.

Could the hosted Dash Julia content be transferred into documentation (i.e. using Documenter.jl) within this repo instead?

Hi Plotly Community,

We’re writing to inform you about an upcoming change to the Dash documentation website.

On May 30th, 2025, Plotly plans to retire the Dash documentation content for Dash R, Dash Julia, Dash Matlab, and Dash F#. We’re making this change in order to prioritize and add more support for the Python community after analyzing traffic, usage patterns, and industry trends. Hosting this documentation has been a continuing draw on the resources of our team, yet represented around 1% of all visits to the site.

We’re delaying the change over until May 30th in order to smooth the transition for those who still require access to the documentation, to gather feedback, and seek out any volunteers who may want to host the content for the community going forward. The content will also be available after May 30th as a downloadable zip file.

We appreciate your understanding as we make this strategic shift to better support the Python Dash ecosystem. Thank you for being a valuable part of the Dash community.

Kind regards,
Plotly Team