This version is out of date, covering development from v7.0.0 to v7.5.6. It is maintained here only for inbound reference links from elsewhere. It is no longer actively updated.

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Tinderbox 7 Icon

Tinderbox files have no '.tbx' extension

Tinderbox files have no '.tbx' extension

First check you haven't set Finder's preferences to hide file extensions - see how. If you have, you won't see any file extensions!

If a Tinderbox file has no '.tbx' extension, even when extensions are shown, then there are some possible causes:

  • If you used Tinderbox before July 2005 (v2.5), the application did not add extensions and relied on old-style MacOS resource fork info. All such legacy Tinderbox files should now be given a '.tbx' extension.
  • You somehow deleted the extension. If you're certain the file is a Tinderbox document, then give it a '.tbx' extension and try opening it
  • The file is not really a Tinderbox file. Either - if confident to look at XML- look at the source code in a text editor. A Tinderbox file will mention the app name on line #2 of the code. Or, send a copy of the file to support (

Now your files have the correct extension they should show a Tinderbox file icon and you should be able to open then simply by double-clicking their file icon. If not, see here.