CTB Converter

Extract text from CTB files


Drop or upload your .CTB file

How to extract text from your CTB file

  1. Click the "Select File" button above, and choose your CTB file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert CTB to another file type

To convert your CTB file to another format, you need Autodesk AutoCAD or other Cad software.

Convert a file to CTB

To convert other file formats to the "Plot Style Table" file type, you need software like Autodesk AutoCAD or a similar tool.


About CTB files

A .CTB file typically refers to an AutoCAD Color-Dependent Plot Style Table, used extensively in architectural and engineering workflows to map on-screen colors to specific printing properties like lineweight, dithering, and end styles. While industry-standard for decades, this format binds visual design to output settings - forcing users to change an object's color just to alter its printed thickness, which can be restrictive compared to the newer, object-based STB format. Users often need to convert .CTB to STB to decouple color from plotting behavior, or print these configurations to PDF for documentation.

The extension is also widely used by CHITUBOX as a sliced format for resin 3D printers. These files contain rasterized layer data rather than editable 3D geometry. A common frustration is that .CTB files are "baked" for specific printer resolutions; you cannot resize or edit the model geometry easily once converted to this format, making it difficult to recover the original STL or OBJ if the source is lost.

Finally, CherryTree uses .CTB for password-protected, encrypted hierarchical note databases (SQLite). These files are inaccessible without the correct credentials and specific software. For archiving or sharing, users typically need to export these notes to PDF, HTML, or plain TXT to make the information portable and searchable outside the specific application environment.

Convert.Guru analyzes your CTB file, detects the exact format, and lets you read the text inside.

Users also converted PC3, STB, CBT, CHITUBOX, STL, CTP, GOO, CBDDLP, XCTB, PCP, ZIP, DWG and CTB2 files.


FAQ

If you want to convert CTB file to STB, STL, CFG, PDF, GO, PCP, DWG, INI, CONF, CONFIG, JSON or XML, you can use Autodesk AutoCAD or similar software from the "CAD Plotting Configuration" category. In the File menu, look for Save As… or Export….

To convert ZSHRC, CONF, RCFILE, GITCONFIG, RC, PLIST, BASHRC, CONFIG, PROFILE, INI, PREFS or CFG files to CTB, try Autodesk AutoCAD or another comparable tool in the "CAD Plotting Configuration" category.



The CTB Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CTB converter.