What is a LAYOUT file?
A .LAYOUT file stores structural, graphical, or configuration information. Because many different programs use the .LAYOUT extension, the exact content depends on the software that created it. The most common type is a 2D design documentation file created by Trimble SketchUp. These files store 2D presentations of 3D models and operate as compressed ZIP archives.
Other software uses .LAYOUT files for entirely different purposes. For example, Wedding Planning Assistant uses them to store seating charts in JSON format. Developers often encounter the Code::Blocks Workspace Layout File used by the Code Blocks IDE, which saves editor states and window positions in XML format. Similarly, Dev-C++ uses them for workspace states. Game engines like Arma 3 and libraries like MyGUI use .LAYOUT files to define user interface elements. You might also see them as floor plan files in Chief Architect or Live Home 3D.
How to open LAYOUT files?
Because .LAYOUT has multiple possible meanings, you must use the correct application for your specific file. You can open 2D presentation files with Trimble SketchUp and developer configurations with Code Blocks.
If you do not know where your file came from, viewer.online/layout analyzes .LAYOUT files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and troubleshooting
Never change a file extension manually. Renaming a .LAYOUT file to another extension will not change its format and might corrupt the file. If you need to share a design presentation with someone who does not have 3D software, you should export it. We recommend file conversion to sensible target formats on convert.guru. Converting a visual .LAYOUT file to a .PDF or .PNG ensures anyone can view it.
Summary
Because many .LAYOUT files use the known ZIP format, viewer.online/layout can safely open and display them online, eliminating compatibility problems.