What is an RLF file?
An .RLF file can contain different types of data depending on the software that created it. Most frequently, an .RLF file is an ArtCAM Relief File. These files store 3D relief models used for CNC machining, woodworking, and engraving in Autodesk ArtCAM.
Another common format is the ArcGIS Report Layout File created by ESRI ArcGIS. In the ESRI ecosystem, these files store page layout configurations, text styles, and formatting rules in an XML-based structure. Other specialized software, such as PANalytical X'Pert HighScore and nSolver Analysis Software by NanoString Technologies, also use the .RLF extension to store scientific reports and library layouts.
How to open RLF files?
To open an ArtCAM Relief File, you typically need Autodesk ArtCAM or compatible 3D modeling software. To open an ArcGIS Report Layout File, you should use ArcGIS Pro or standard text editors, as it is formatted in XML.
Because the .RLF extension has multiple possible meanings—ranging from binary 3D models to plain text XML files—it can be difficult to know which software to use. We recommend using viewer.online/rlf to identify the actual format of your specific file.
Inspect and View Online
viewer.online/rlf can analyze .RLF files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Summary
Whether you are dealing with a complex 3D relief model or an ESRI report layout, viewer.online/rlf is useful for identifying, inspecting, and understanding .RLF files without installing software or dealing with compatibility problems.