question .rtf files now have become .rtfd files and won't open

thanks tom. It wasn't because i was changing the file endings but, rather, that suddenly i was unable to view files i thought i had previously been able to read on Dropbox.

I wasn't aware that, when textedit would give me the warning you referred to, a text would become unreadable in Dropbox--  so i usually just went ahead and agreed to the change. Now, however, arrives yet another time consuming thing i will have to go back and fix! But, at least, thanks to you, i will be aware in the future.

I did discover that i could change the .rtfd into .rtf endings manually in the dropbox folder (once in the online version of Dropbox) which caused the  images to separate from the text. The 'images' (often just fancy font implants) seem, then, mostly pretty much unusable but, sometimes, the images are really not critical so it won't matter.

again..thanks..and i hope Dropbox will have some way to fix it in the future.

When you add any image(s) into .rtf file, it becomes .rtfd. Unfortunately .rtfd file is MacOS X's proprietary format and no other OS can understand this format. rtfd is Mac based "Package" file that self-contains text and image into one file. Only .rtf file is cross-platform but .rtf cannot contain images. The solution is to use Word file. In this way, any platforms can understand it including Dropbox app on your iPhone or other mobile OS. On top of that Word file can contain images and it's still legible by all platforms. To convert .rtfd file to Word, open .rtfd file, select all contents from the .rtfd and paste them into Word document. 

"don't use rtfd" is not a solution.  It USED to work in dropbox and they changed something.

rtfd is a meta-format that creates a directory (folder) and keeps the images and rich text in that directory instead of using a single file to house both.  On the Mac, this directory looks like a single file (called a "Package") for user convenience.

In fact, rtfd DOES still work for some files, so they broke something recently which neglects to save the files inside the directory.

Please, Dropbox, can you make .rtfd files readable in Dropbox on iPad and iPhone? It is really annoying that I can't open these files when I need them the most - i.e. underway. It is such a useful way to have text and embedded files on one page, for example a snippet from a web page with my text added. Just what one needs when travelling and needs these files as reference!

Couldn't agee more, Martina. RTFD is a native file format, and used to work perfectly in Dropbox. Now, most of my DB files are unreadable on my iOS devices. Inexcusable. 

I agree, having the same problem with hundreds of these files.  Inexcusable!!

I have the same issue with .rtf files since a couple of months. Some older files will preview but most will not. A new rtf file created in MAC text editor cannot be previewed in Dropbox.

Either Apple has changed something in text editor (unlikely since I notice similar complaints about rtf in Android) or Dropbox itself has made a change (more likely).

In any case I have had to move a swathe of rtf files to another environment so I can preview them in IOS.

On IOS I only use the preview function of dropbox, whatever editing i do is all done on my mac.