Originally posted by **purva-thakre** May 23, 2024
https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/version-dropdown.html
RTD allows us to switch between earlier versions of mitiq's documentation. The ability to switch between earlier versions is not as easily accessible unless we scroll down to the bottom of each page and look at the bottom left corner.
![image](https://github.com/unitaryfund/mitiq/assets/66048318/c305665f-4ab0-4e2a-b331-d6220137ba15)
This option is also not available on certain pages like https://mitiq.readthedocs.io/en/stable/
With the PyData theme, there is a convenient option of using a [version switcher](https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/version-dropdown.html) in the header/navigation bar.
![image](https://github.com/unitaryfund/mitiq/assets/66048318/abcfea93-cf37-4f86-9909-58954aedb8a0)
Discussed in https://github.com/unitaryfund/mitiq/discussions/2383