.CTB File Extension
- Developer by: Autodesk
- Category: Settings Files
- Format: Binary
What is an .CTB file?
.CTB is AutoCAD Color-Based Plot Style File
File used by AutoCAD, a CAD program used for 2D and 3D drawing; contains color-based plot styles, or mappings of colors to layers of objects; used to attach color and display settings to design objects.
CTB files can be replaced by the newer .STB format, which abstracts layer color-based properties to object-based properties. Many companies still use CTB files instead of STB files because of the cost required to train personnel and to upgrade existing CAD designs.
NOTE: CTB files and STB files cannot both be used within the same CAD design. CTB files may be converted to STB files using AutoCAD.
File Type 2 Cherrytree SQLite Document
A CTB file is a document created by Cherrytree, a note-taking application. It stores document data in SQLite format, which may include text, tables, images, objects, and document settings. CTB files protected with a password are saved as .CTX files.
Users typically save Cherrytree documents as CTB or CTX files. However, they may also save documents in XML format as .CTD files. Password-protected CTD files are saved as .CTZ files. CTD and CTZ files are useful for saving documents that are smaller in size than CTB and CTX files.
NOTE: Cherrytree is developed by giuspen, a portmanteau of Giuseppe Penone.