.CTB File Extension

File Type:
AutoCAD Color-Based Plot Style File

Having trouble opening .ctb extension? Don't panic! This page explains what ctb files are as well as suggests programs you may use to open ctb files. You can download these programs through this page.

What is a CTB file?

Ctb file extension has AutoCAD Color-Based Plot Style file type, developed by Autodesk, which is associated with the "settings files" category.

AutoCAD is a popular CAD application for creating drawings and schematics in 2D and 3D. It uses files with this extension to do its job as they contain color mappings for object layers. In other words, allow setting color and displaying settings in projects you’re working on. CTB files were used by older version of the software and were replaced by .STB files. The program allows users to convert CTB files from older projects into STB files.

To learn how you can open the given file, read the information below.

ctb file icon
File Type:
AutoCAD Color-Based Plot Style File
Settings Files

How to open CTB file?

Double click the ctb file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .ctb extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the ctb extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the ctb file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open CTB files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the ctb file as well. Download Universal File Viewer for your OS.

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