I do freelance work for small-town newspapers and the cost of Creative Cloud was getting me down. Affinity's apps have fairly good parity for features but can't read .indd files. Thankfully, IDMarkz SE does, and the converted files are usually indistinguishable from InDesign; any differences seem to be on Affinity's end. Thank you for enabling a smooth transition!

IDMarkz SE converts InDesign files to IDML, for opening page layouts in not only earlier versions of Adobe InDesign, but also in QuarkXPress, Affinity Publisher, and more. Markzware helps to democratize Adobe InDesign content for use in several popular desktop publishing applications. … IDMarkz SE is a stand-alone way to get InDesign files into the standard IDML format, with just a click. With this affordable stand-alone technology, users can open, export, convert, and automate the conversion of Adobe InDesign files, allowing users to better control their content.

IDMarkz SE for Windows … easily converts original INDD and INDT files … to IDML files that can be used in other versions of InDesign, QuarkXPress or Affinity Publisher. The product is therefore a good solution if you need compatibility between older and newer InDesign versions, or if you want to use InDesign files on other publishing platforms.
InDesign does not have to be installed for this to work. … For example, if you switch from InDesign to Affinity Publisher or another software, you do not have to convert all InDesign documents to IDML first, but can immediately convert original InDesign documents (INDD). When an INDD file is opened, IDMarkz converts it to IDML. This is how you can get IDML documents without having InDesign. Anyone who, as a graphic designer or prepress company, has hundreds or thousands of documents in InDesign format, will hardly want to convert all of them with InDesign to IDML. IDMarkz is significantly easier and faster – and even more flexible. When the INDD file is opened, IDMarkz (SE) interprets and converts it. The document can then be exported in a selectable format and (for example with Affinity Publisher) opened directly in the target software.

The user interface of IDMarkz SE differs from the Macintosh version … However, it will ultimately convert INDD documents, in the same fashion. IDMarkz SE is … fast and allows the user to set up their application to open Adobe InDesign page layouts in other DTP applications. … The IDMarkz SE tool is capable of converting documents from InDesign to IDML, InDesign to Affinity Publisher, InDesign to QuarkXPress, InDesign to InDesign (lower versions down to CS4).

IDMarkz SE has a simple interface and does not include the Preview and File Information functions as the Macintosh version does. However, it will eventually convert .indd documents, the same way. IDMarkz SE is ... fast and allows the user to configure their application not only to open Adobe InDesign page layouts in other DTP (Desktop Publishing) applications, but also to directly export IDML.

While working on the manual for the Job Contender, we found out we could no longer open some older, important InDesign files. Because of a very tight budget, we moved away from Adobe software to more affordable apps. A graphic designer pointed us in the right direction. His recommendation was Markzware, a leading software publisher.

IDMarkz SE is a stand-alone way to get InDesign files into the standard IDML format, with just a click … users can open, export, convert, and automate the conversion of Adobe InDesign files

IDMarkz SE … for Windows … is designed to convert InDesign files to IDML and other formats so that they can be opened by earlier versions of Adobe InDesign or by QuarkXPress and Affinity Publisher. … IDMarkz SE differs in appearance from the Macintosh version of IDMarkz … However, the functionality is the same as far as conversion is concerned.