.RELS ファイル拡張子

A file with a RELS extension is associated with an Open Office XML Relationships File developed by Microsoft. This file type is categorized as a Page Layout File and is saved in XML format.

It is a metadata file stored within Microsoft Office Open XML documents, such as DOCX, XLSX, and PPTX files. RELS files contain essential information, XML specifications, about how the parts of different Microsoft Office documents fit together.

Thanks to these files, various Microsoft Office applications can have the information in one file to be used in another. Important to mention that this file type can only be compatible with the recent versions of the Microsoft Office applications supporting Open Office XML documents

Additional information

To open a file with a RELS extension, you can use Microsoft Office applications, such as Microsoft Word, Microsoft Excel, and Microsoft PowerPoint. These tools are available for Windows, Mac, and Linux operating systems.