Having problems opening a ctb file?

Find out what programs can help open, view, play or convert your ctb files.

Opening ctb files
AutoCAD Color-Based Plot Style File

Did your computer fail to open a ctb file? We explain what ctb files are and recommend software that we know can open or convert your ctb files.

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What is ctb 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 have been updated to .STB files, which abstract 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.

Software that will open, convert or fix ctb files

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