The Quick Way to Open Files with CTB Extension

Different software packages use different file extensions, so if you can't open the CTB file, it could be because:

  • You don't have the associated software on your computer (AutoCAD Color-dependent Plot Style Table and NoteTab Clipbar are the most popular software packages that use CTB file).

  • You may have AutoCAD Color-dependent Plot Style Table or NoteTab Clipbar but your computer is not configured to associate CTB files with the relevant software.

  • The file is corrupt.


If You Don't Have AutoCAD Color-dependent Plot Style Table or NoteTab Clipbar

In order to open your CTB file, you will have to download AutoCAD Color-dependent Plot Style Table, NoteTab Clipbar, or another similar software package.

If Your Computer is Not Configured to Open CTB Files

If you have the relevant software, but your computer still won't open the software, you will have to change the file associations on Windows or Mac. Depending on your operating system, you can ensure that your computer always open CTB files using AutoCAD Color-dependent Plot Style Table, NoteTab Clipbar, or another program of your choice that uses CTB files.

If that still doesn't work, you can get in touch with your software developer to find out what you can do. You can contact any of these developers for more information or assistance:

Software Developer
AutoCAD Color-dependent Plot Style Table Autodesk Inc.
NoteTab Clipbar Windows Software

If the CTB File is Corrupt

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In some instances, you may receive an error message stating that the file is corrupt. If you have tried all of the above, and it still doesn't work, download or request a new copy to see if that works.


Open CTB File the Easy Way

If you don't want to download AutoCAD Color-dependent Plot Style Table or NoteTab Clipbar (for whatever reason), and the other options also don't work... that's okay!

Even though some CTB files must be opened in a program for which it was developed (binary format), you may still be able to open it in a universal file viewer such as File Magic. Download File Magic now from the Microsoft Store and open your CTB file!

Download File Magic 

File Magic