Document
What is a .cpo file?
A .cpo file is a Corel Print House/Print Office Document (version 3). This is a document format, so it holds text and layout meant to be read. Confusingly, this extension has been used by 3 different formats over the years — they're all listed below.
This extension has been used by more than one format
3 different formats have claimed .cpo over the years, so two files with the same extension aren't necessarily the same kind of thing.
How to open a .cpo 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/Print Office Document, Corel Print House/Print Office Document, Corel Print House/Print Office Document, so software from that family is the most likely match.
How to convert a .cpo 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 .cpo.
| Format name | Version | MIME type | PUID |
|---|---|---|---|
| Corel Print House/Print Office Document | 3 | — | fmt/1419 |
| Corel Print House/Print Office Document | 4 | — | fmt/1420 |
| Corel Print House/Print Office Document | 5 | — | fmt/1421 |