While browsing the Gazebo documentation index page, I noticed that some of the links listed are broken and lead to a “The page is not found.” error.
Specifically, links provided on the following page:
https://osrf.github.io/gazebo-doc-index/categories/all_links.html
redirect to pages that no longer exist or return a 404 error (see attached screenshot).
Steps to Reproduce
Open https://osrf.github.io/gazebo-doc-index/categories/all_links.html
Click on one of the listed documentation links
Observe that the target page shows “The page is not found.”
Expected Behavior
All links listed on the documentation index page should redirect to valid, accessible documentation pages.
Actual Behavior
Some links redirect to non-existent pages and show a “page not found” error.
Environment
Browser: (e.g., Chrome / Firefox)
OS: (e.g., Ubuntu 22.04 / Windows 11)
Additional Information
This may be due to outdated URLs or documentation being moved without updating the index page.
Screenshot attached for reference.
Please let me know if I can help identify specific broken links or test a fix

While browsing the Gazebo documentation index page, I noticed that some of the links listed are broken and lead to a “The page is not found.” error.
Specifically, links provided on the following page:
https://osrf.github.io/gazebo-doc-index/categories/all_links.html
redirect to pages that no longer exist or return a 404 error (see attached screenshot).
Steps to Reproduce
Open https://osrf.github.io/gazebo-doc-index/categories/all_links.html
Click on one of the listed documentation links
Observe that the target page shows “The page is not found.”
Expected Behavior
All links listed on the documentation index page should redirect to valid, accessible documentation pages.
Actual Behavior
Some links redirect to non-existent pages and show a “page not found” error.
Environment
Browser: (e.g., Chrome / Firefox)
OS: (e.g., Ubuntu 22.04 / Windows 11)
Additional Information
This may be due to outdated URLs or documentation being moved without updating the index page.
Screenshot attached for reference.
Please let me know if I can help identify specific broken links or test a fix