Click the "Select File" button above, and choose your LD file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert LD to another file type
To convert LD Logs and scripts to another format, you need MoTeC i2 or other Data software.
Convert a file to LD
To convert other file formats to the "Telemetry Data Log File" file type, you need software like MoTeC i2 or a similar tool.
About LD files
The .ld file extension is primarily associated with MoTeC motorsports data loggers. These devices capture high-frequency vehicle telemetry data, including vehicle speed, RPM, engine temperature, and suspension travel. A secondary, highly common use is as a GNU Linker Script used by the GNU Compiler Collection (GCC) to control memory layout during software compilation. You may also encounter .ld files as Launch Services cache databases in Apple macOS and iOS, or as firmware update files for Polycom VoIP phones. The main disadvantage of a MoTeC .ld file is that it is a highly proprietary, closed binary format. Telemetry files can exceed hundreds of megabytes during endurance races and require specialized, expensive software to open and analyze. You cannot natively open these telemetry logs in standard web browsers or data science tools. Standard online converters fail because the internal encoding structure is undocumented and deliberately restricted by the manufacturer. If you need to perform custom data analysis, the best target format is CSV, which allows the telemetry to be imported into Microsoft Excel, Python, or MATLAB. Linker scripts, however, are plain text and can easily be converted or renamed to TXT. Because the MoTeC .ld format is difficult to open or convert, often only the original MoTeC i2 software can properly read or export the data. If our analysis detects a supported underlying or embedded format, like a plain-text linker script or a JSON export from the LearnDash LMS plugin, viewing or conversion may still be possible.
Convert.Guru analyzes your LD file, detects the exact format, and lets you read the text inside.
If you want to convert LD file to OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D, STL, PLY or WRL, you can use MoTeC i2 or similar software from the "Motorsports Telemetry Data Logging" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to LD, try MoTeC i2 or another comparable tool in the "Motorsports Telemetry Data Logging" category.
The LD Converter Story
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 LD converter.