QUESTION: Can I open a file generated in inDesign CS6 on my Mac on a CS5.5 Mac without converting it to an IDML
ANSWER: Hi Howard,
Thank you for your question.
Why do you need to open it on a CS5.5 Mac - is it so that it can be printed etc?
If it just to be printed then exporting to pdf would be a better option - print shops don't need the original files to be able to print, as long as the files follow their technical specifications pdfs etc should be fine.
Or if its not for printing purposes - then you will need to Save As > Format: InDesign CS4 or later (IDML) for it to be opened in CS5.
Or another way would be - File -> Package your CS6 file, - make sure all linked files are included, and save an IDML file. And, because the IDML file won't match your CS6 INDD perfectly if you've used any tools new in CS6 save a pdf copy as well so you can check for any issues if it doesn't convert properly.
"With InDesign, there is no automatic way to “downsave” a project like in Illustrator. However you can Export your document as IDML (InDesign Markup Language). IDML files can be read into earlier versions like InDesign CS5.5, CS5, or CS4 – but again there is the potential to lose newer features that aren’t supported in older releases. To go back to InDesign CS3 you would need to Export to INX (InDesign Interchange format) from CS4 instead.
Alternatively, you can use external file downsaving services which will do this for you for a nominal fee – going from InDesign CS6 to CS5.5, CS5, CS4, CS3, CS2, or even CS."
More information -
Hope that helps, if you have any further questions don't hesitate to ask.
---------- FOLLOW-UP ----------
QUESTION: my problem is, I created the file in CS6 in my office, brought it home and need to open it on my CS5.5.
I forgot to covert it at work
Have you tried to open it? Any messages that come up? If you haven't tried it - make a copy/duplicate of the file and then try to open the copy version.
It probably won't work - its easier to open older files in newer versions of indesign and not so much for the other way round - as conversions or backsaving need to take place - such as saving as IDML.
I've looked to see if there are any online conversion programs but I'm afraid I can't find any.
You will need to use CS6 to down save the file to CS5. Or use photoshop and illustrator as they have more fluid file compatibilities.