Opening CTB Files

The CTB file type is primarily associated with AutoCAD.

CTB	File extension: CTB
	File type:	plot style file

What is a CTB file

CTB files mostly belong to AutoCAD by Autodesk. A CTB file is color-dependent plot style file. It is primarily associated with AutoCAD which is a computer-aided design (CAD) program developed by Autodesk.

Main Usage: Color-dependent plot styles are used to map colors and display settings to layers of object to control appearance of plotted objects. The CTB file maps an indexed color in palette to desired plot output. It helps in improvising visual distinction of the plot output.
Associations:
- Cherrytree, a note making application developed by Giuspen, creates files with CTB extension. File may include text, images and tables. Data stored in such files would be in SQLite format.
- Custody Toolbox files created by Five O'clock software also uses CTB extension. This toolbox is a custody management program used in child custody matters.

How to open CTB files

You need a suitable software like AutoCAD to open a CTB file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CTB file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CTB file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CTB Text Viewer

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Programs that open and convert CTB files:

AutoCAD by Autodesk
See the previous paragraphs to learn more about the main application. CTB files are often referred to as AutoCAD settings because this type of file is primarily created or used by this software.
cherrytree (cherrytree note) by Giuseppe Penone (giuspen) and Evgenii Gurianov (txe)
cherrytree is a hierarchical note taking application for Linux. It has features such as rich text formatting and syntax highlighting. The CTB extension is associated with a cherrytree note. A CTB file has the SQLite format. It is a database that references different parts of the note, allowing users to load parts of the document at runtime, instead of loading the complete document at once. This file format is classified as Database. Related links: cherrytree Repository, cherrytree Manual Mentioning CTB Files, Note Taking Using cherrytree, cherrytree Tutorials, cherrytree Review Video
Custody Toolbox (Custody Toolbox data file) by Five O'clock Software
Custody Toolbox is a child custody management software that allows parents to organize custody situations. The CTB file format is used to store data for Custody Toolbox. This file format is classified as Data. Related links: Custody Toolbox FAQs, Custody Toolbox Help, Press Release About Custody Toolbox, Custody Toolbox on CNET, Custody Toolbox on Software Informer
NoteTab (NoteTab Clipbar file) by Fookes Software
NoteTab is a versatile text and HTML editor for Windows. It has a tabbed interface and provides productivity tools that make editing more convenient. The CTB file format is used by NoteTab to store Clipbar information (Library, clip, and button). This file format is classified as Data. Related links: NoteTab Manual, NoteTab Tutorial, NoteTab Review, NoteTab Lite Video Tutorial

CTB file format details:

To find out what program is needed to open CTB files, you need to determine the file format. The file format can be deduced from the file extension and the signature. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. If there are problems opening a file, you must first determine the file format used. Below you will find our evaluation of the CTB files:

CTB is a very commonly used file extension and includes different formats for the applicable programs. The file formats most commonly found in CTB files are:

55% of all CTB files are associated with AutoCAD Color-Based Plot Style. If you open these files in a text editor, you will see only illegible characters. The files are on average 4 KB in size and range from 4 KB to 5 KB. The file type was developed 20 years ago and is still in use today. The files contain the following words: PIAFILEVERSION_2.0,CTBVER1,compress and pmzlibcodec. Such files are related to music, color, monochrome, plot, standard, acad, colour, typestyle, style and half.
25% of all CTB files are CherryTree note files, which are using the popular SQL file format. An SQL file contains a lightweight SQLite database, widely used in application development for storing application related data. If you open these files in a text editor, you will see only illegible characters. A typical file size is 510 KB. Certain words are almost always found in the files, such as SQLite format 3. The following filename is common: Notes.ctb. Such CTB files store data about oscp, template, cherrytree, cherry, manual and testing.

The remaining 20% of all CTB files are files with no common format, often e.g. XML. These files sometimes refer to body, rook, ewaptx, tower, pentest, phrozen, project, survey, infra, linux, book, labs or tree. Drag & drop your file here to see the file format and a preview of your CTB file!

Technical Data for CTB File Extension

File classification:

Settings

Related files:

cbt, ctb2, pc3, ctp, dwg, stb, zip, cbddlp, ctd, cte, txt, pmp, login data, exe, cookies, stl, pdf, pcp, plot, rar, dxf, pnt

Mime type:

application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: AutoCADColorDependentPlotStyleTableFile, FileType: AutoCAD Color-dependent Plot Style Table File, AppName: Autodesk Hardcopy Plot Style Table Editor

ProgramID: AutoCADLTColorDependentPlotStyleTableFile, FileType: AutoCAD LT Color-dependant Plot Style Table File, AppName: Autodesk Hardcopy Plot Style Table Editor
EXEFile: STYEXE.EXE

ProgramID: AutoCADColorDependentPlotStyleTableFile
EXEFile: %ProgramFiles%\ACAD2000\STYEXE.EXE %1

ProgramID: AutoCADColorDependentPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD 2002\STYEXE.EXE %1

ProgramID: AutoCADColorDependentPlotStyleTableFile
EXEFile: %ProgramFiles%\Autodesk Architectural Desktop 3\STYEXE.EXE %1

ProgramID: AutoCADLTColorDependantPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD LT 2000i Ita\STYEXE.EXE %1

ProgramID: AutoCADColorDependentPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD 2000i\STYEXE.EXE %1

ProgramID: AutoCADColorDependentPlotStyleTableFile
EXEFile: %ProgramFiles%\Autodesk Building Systems 3\STYEXE.EXE %1

ProgramID: AutoCADLTColorDependantPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD LT 2002\STYEXE.EXE %1

ProgramID: AutoCADLTColorDependantPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD LT 2000i\STYEXE.EXE

ProgramID: AutoCADLTColorDependantPlotStyleTableFile
EXEFile: %ProgramFiles%\AutoCAD LT 2000\\STYEXE.EXE

ProgramID: CB_CTBFormat (ctb)
EXEFile: %ProgramFiles%\ChessBase\CBReader\CBReader.exe

ProgramID: Icad.load.ctb
EXEFile: %ProgramFiles%\progeSOFT\progeCAD 2006 LT ENG\PStyleApp.exe

ProgramID: CTF.Binfile
EXEFile: %ProgramFiles%\Micro Focus\Net Express 5.0\Base\BIN\CTFViewer.exe

ProgramID: Icad.load.ctb
EXEFile: %ProgramFiles%\progeSOFT\progeCAD 2008 Smart! ENG\PStyleApp.exe

Show all 15 listings To Top

a ctb plot style file is a special file format by Autodesk and should only be edited and saved with the appropriate software.

How to solve problems with CTB files

Associate the CTB file extension with the correct application.
Update your software that should actually open plot style files. Because only the current version supports the latest CTB file format. Search, therefore, e.g. on the Autodesk manufacturer website after an available AutoCAD update.
To make sure that your CTB file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CTB file online - secure, fast, and no downloads needed.