This is a follow up question to this 2021 post:
https://community.atlassian.com/t5/Confluence-questions/HTML-macro-Confluence-Server-to-iFrame-macro-Confluence-Cloud/qaq-p/1881224
We are migrating Confluence DC to Confluence Cloud. On DC we have several instances of the HTML Macro. That macro is not available in Confluence Cloud.
Like the OP of the above post, we are trying to figure out what if anything we can do on the DC system to convert those HTML macros so that when the migration completes the result will be that the content is still displayed in Confluence Cloud.
The OP mentions that Cloud has an iFrame macro. Many of our HTML macros are used to imbed iFrame, but not all. Also, the iFrame macro itself is not available in DC, so we can't convert the macros on DC before the migration.
An answer on the post refers to this document while seeming to imply that document details how to use the iFrame macro in DC. However, that document says to use the HTML macro to embed iframe code, so it is not a solution.
I'm thinking the only solution might be find a DC-compatible a third party app that supports HTML and also has a Cloud migration path, and convert the native Confluence DC HTML macros to those third party macros.
Anybody have any suggestions on this topic?