The standalone bundle allows users to easily place picture environments or other material in own source files and compile these on their own or as part of a main document
standalone – Compile TeX pictures stand-alone or as part of a document
A class and package is provided which allows TeX pictures or other TeX code to be compiled standalone or as part of a main document. Special support for pictures with beamer overlays is also provided.
The package is used in the main document and skips extra preambles in sub-files. The class may be used to simplify the preamble in sub-files.
The behaviour in standalone mode may adjusted using a configuration file
standalone.cfg to redefine the standalone environment.