tax2023 to pdf conversion is most likely searched by users that are looking for a way to export tax forms to a PDF format, typically for printing purposes.
It appears that TurboTax uses .tax2023 files by default (for tax year 2022), which means it is your best option for this kind of conversion. Another viable option would to use some viewer for TurboTax files and use it to print your tax returns as PDFs.