Convert InDesign CS6 to Adobe InDesign CS5.5 with MarkzTools for InDesign:
Pre-Cloud-release InDesign CS5.5 users can convert InDesign CS6 to CS5.5 with MarkzTools for InDesign. This InDesign plugin allows InDesign CS5 through CS6 users to convert InDesign CC or higher files directly to CS5, CS5.5 or CS6.
This video shows how to convert InDesign CS6 to CS5.5 files, without IDML, using MarkTools:
Convert InDesign CS6 to Adobe InDesign CS5.5 with
MarkzTools for InDesign
How to Use MarkzTools for InDesign
• Go to the MarkzTools menu.
• Select “Convert InDesign Document“.
• Select the InDesign file that you want to convert.

The Annual Subscription gives the user 1 year of the use of MarkzTools for CS6, CS5.5 and CS5 Mac on a single computer. This includes all updates and upgrades during that year, starting on the date of purchase. After the year is over, users can renew their subscription to continue using MarkzTools.
For more information on Markzware‘s InDesign plugin to open InDesign CC in lower versions, please see the MarkzTools page. For more data conversion solutions and conversion tools, please see the Markzware Products page.
Convert InDesign CS6 to Adobe InDesign CS5.5 with MarkzTools for InDesign
