# CRX File The CRX File component is a collection of compilation units related to the creation or manipulation of CRX archive files. A CRX file is a ZIP archive with a prepended header section. The CRX file format is described in more detail in `crx3.proto`. `crx_creator.h` provides a means to create a CRX file. `crx_verifier.h` provides a means to verify the integrity of a CRX file.