Extract text from LDraw models (LDR)
To convert LDR models to another format, you need LeoCAD or other 3D software.
To convert other file formats to the "LDraw Model File" file type, you need software like LeoCAD or a similar tool.
The .ldr file is primarily an LDraw Model File used to store virtual LEGO designs and 3D CAD models. It dictates the placement, color, and orientation of individual LEGO bricks using plain text coordinates. This open standard is managed by LDraw.org and is most commonly opened with LeoCAD or LDCad. Secondarily, the extension is used for system-level files like Windows executable program loaders, firmware loaders for Analog Devices processors, or even proprietary application data exports.
Sharing a 3D .ldr file with someone who lacks specialized LEGO CAD software is a major disadvantage. They will not be able to view the 3D model in standard document viewers or web browsers. Furthermore, system loader versions are completely opaque, binary files that cannot be easily read. Users typically need to convert 3D .ldr files to standard 3D formats like OBJ, STL, or DAE for rendering in software like Blender, or to PDF and PNG to share step-by-step building instructions. Be aware that exporting to STL for 3D printing may strip out color data while preserving the physical geometry.
This file format is exceptionally difficult for generic online converters to process. The file itself only contains text references to parts; it requires a massive, externally installed library of 3D LEGO brick definitions to actually render the model. Often, only the original LDraw-compatible software can properly read or export the 3D data. If our analysis detects a supported underlying or embedded format (like a ZIP archive in Appian exports), viewing or conversion may still be possible.
Convert.Guru analyzes your LDR file, detects the exact format, and lets you read the text inside.
Users also converted LDRT, LXF, IO, LXFML, JPG, ZIP, OBJ, PNG, HDR, PDF, MPD, TXT and GLB files.
If you want to convert LDR file to LAS, HDR, LUX, DWG, DXF, DGN, RVT, RFA, SKP, 3DM, STEP or IGES, you can use LeoCAD or similar software from the "Virtual LEGO 3D CAD" category. In the File menu, look for Save As… or Export….
To convert SLDASM, DGN, PRT, IAM, X_B, CATPRODUCT, SLDPRT, RVT, ASM, DWG, CATPART or DXF files to LDR, try LeoCAD or another comparable tool in the "Virtual LEGO 3D CAD" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our LDR converter.