RELS File Type

- The quick facts

What are RELS files and how to open them

Are you having problems opening a RELS file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a RELS file?

Files that contain the .rels file extension are relationship files. These files contain information about how the parts of different Microsoft Office documents fit together. This information is also referred to as relationship parts.

RELS files serve as markers for the documents that they pertain to. They allow the various Microsoft Office applications to utilize the information in one file so that it can be used in another file.

The RELS file format is only compatible with the more recent versions of the Microsoft Office applications which support Open Office XML documents. The RELS files are saved in the directory of the Open Office XML document.

How to open RELS files

Important: Different programs may use files with the RELS file extension for different purposes, so unless you are sure which format your RELS file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 10 different RELS openers which you will find listed below.

Last updated: December 15, 2021

Suggest another file format using extension RELS

While we know of one file format using the .RELS file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .RELS file.

Various apps that use files with this extension

These apps are known to open certain types of RELS files. Remember, different programs may use RELS files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Adobe DreamweaverAdobe DreamweaverUser submitted
Macromedia Dreamweaver MXMacromedia Dreamweaver MXUser submitted
BrowserBrowserUser submitted
Aptana StudioAptana StudioUser submitted
T-Online BrowserT-Online BrowserUser submitted
Macromedia DreamweaverMacromedia DreamweaverUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Instant AccessInstant AccessUser submitted
Microsoft Application VirtualizationMicrosoft Application VirtualizationUser submitted
Adobe Dreamweaver CCAdobe Dreamweaver CCUser submitted
We have not verified any software that we know for certain will work with RELS-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with RELS-files. If you know one, please use the 'Suggest a program' link below and tell us about it!