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What is a .cph file?

A .cph file is a Corel Print House Document (version 1). This is a document format, so it holds text and layout meant to be read. Confusingly, this extension has been used by 5 different formats over the years — they're all listed below.

This extension has been used by more than one format

5 different formats have claimed .cph over the years, so two files with the same extension aren't necessarily the same kind of thing.

How to open a .cph file

  • Try LibreOffice (free, Windows/Mac/Linux) — it opens an enormous range of current and historic document formats.
  • Microsoft Word and Google Docs handle most mainstream document types.
  • If nothing opens it, open it in a text editor: many older document formats have readable text inside.

The registry records this extension against Corel Print House Document, Corel Print House Document, Corel Print House/Print Office Document and others, so software from that family is the most likely match.

How to convert a .cph file

  • Once it opens in LibreOffice or Word, Save As .docx or .pdf to get it into a format you can use anywhere.

The technical record

For archivists, developers and the merely curious: these are the PRONOM registry entries for .cph.

Got another one?