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CTB STB
File conversion

Convert CTB to STB

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Is it possible to convert CTB to STB?
Yes - CTB converts to STB.

The only meaningful CTB conversion: switch a drawing from color-dependent (CTB) to named (STB) plot styles. AutoCAD's CONVERTPSTYLES command converts the current drawing, and the Plot Style Table Editor / CONVERTCTB can create an .stb from a .ctb. Note it changes the whole drawing's plot-style mode, not just the file.

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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How to convert CTB to STB

Converting a .CTB file to .STB lets you open the content in software that prefers the .STB format, though some details may change compared with the original. We are still putting together the list of programs that handle .CTB files.

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

About these formats

.CTB AutoCAD Color-Dependent Plot Style Table

A CTB file is an AutoCAD color-dependent plot style table. It tells AutoCAD how each drawing color should print - its output color, line weight, and screening. You open and edit it inside…

Open .CTB details →
.STB AutoCAD R2000 plot style table

A .STB file is associated with AutoCAD R2000 plot style table, a settings file.

Open .STB details →