KB1910051: Using MarkdownTableMaker for Google Sheets in iPadOS
In general, Google Sheets add-ons are available in Safari for iPadOS. However, the Google Sheets offline app for iPadOS must be first uninstalled.
When the Google Sheets app is installed, it handles all the spreadsheet documents automatically. To prevent this default handler behavior, the app must be uninstalled.
Removal of the Google Sheets offline app allows Google Drive spreadsheet documents to be opened within the full version of Google Sheets inside the Safari for iPadOS web browser.
All MarkdownTableMaker features work in Safari for iPadOS.