What is a RED file?
The .RED file extension is used for multiple different data formats. The most frequent use is a Window construction report file generated by the software Orgadata LogiKal. These specific files use standard ZIP compression to package structural data. Another common format is the CADViewer Redline Markup File, created by Tailor Made Software. This format stores visual annotations for CAD drawings. Other software uses the .RED extension for Redcode assembly language files in the Core War programming game, binary meshes for the CD Projekt RedEngine, and source code for the Red programming language.
How to open RED files?
Because .RED has multiple possible meanings, you must first identify the actual format of your file. If it is a construction report, you can open it with Orgadata LogiKal. If it is a CADViewer Redline Markup File, you should use CADViewer to view the annotations. If the file contains Redcode or Red source code, you can open it with standard text editors like Notepad++.
Software and tools
If you do not have the original software installed, viewer.online/red analyzes .RED files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. If you need to use the data in other applications, we recommend file conversion to sensible target formats like .ZIP, .TXT, or .PDF on convert.guru.
Summary
Because many .RED files use the known ZIP format, viewer.online/red can safely open and display them online, eliminating compatibility problems.