Files with the IDML extension are created with Adobe InDesign, and the full name of the format is the InDesign Markup Language. This program is designed for purpose of creating complex graphic layouts of pages, which are later used in magazines, newspapers, brochures, leaflets, books or eBooks.
Files with the INDD extension store professional projects of page layouts , created with the Adoba InDesing program. They store only important data, such as content of the page, graphic design, information on formatting, styles, information on related files and many other elements.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the IDML file after converting to INDD may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from IDML to INDD to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting IDML to INDD does not meet your expectations, you can simply try to find on the Internet a different version of your file in IDML format, properly converted to a INDD file by someone else. If this fails, use the information provided in the further part of the website.
If after converting the file IDML the desired result was not achieved, you can try to change the format of IDML file to other than INDD. On our website you will find more information on the following conversion options
Unfortunately, if after performing the two previously described steps (trying to find your IDML file converted by someone else, and the attempt to convert it to INDD on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the IDML file in its original format (without conversion to INDD file). Such a solution will be difficult to implement, but it certainly will give the best result.