Extract text from Windows test logs (WTL)
To convert WTL log files to another format, you need Windows HLK or other Developer software.
To convert other file formats to the "Windows Test Log" file type, you need software like Windows HLK or a similar tool.
The .WTL file format is a Windows Hardware Test Log generated by the Microsoft Windows Hardware Lab Kit (HLK) and Windows Test Technologies. These files capture detailed diagnostic data, error logs, and execution results when developers test hardware components for Windows compatibility.
Normally, these files are managed and viewed inside HLK Studio or the legacy Windows Logo Kit (WLK). Because they are highly specialized, sharing a .WTL file with a client or team member who does not have the Microsoft HLK installed is a frustrating experience.
Users frequently need to convert .WTL files because the native software is heavy, requires a dedicated testing environment, and is not designed for quick log sharing. While standard online converters often fail to process .WTL files because they do not recognize the proprietary extension, the underlying format is actually XML.
We recommend converting .WTL files to standard XML or TXT for universal readability. Advanced users may want to parse the nested data into CSV for analysis in Microsoft Excel, though some complex hierarchical test data may flatten or become difficult to read.
This file format is notoriously difficult to open or convert correctly using generic tools because the internal XML schema relies on Microsoft-specific namespaces and heavy nesting. Often, only the original testing suite can properly render the test steps and results visually. However, just drag and drop your file to identify the format, view it, and convert it when possible. Since our analysis detects the supported underlying XML format, viewing the raw text or converting it to accessible text formats is easily handled by convert.guru.
Convert.Guru analyzes your WTL file, detects the exact format, and lets you read the text inside.
Users also converted ELOG, ODL and RL files.
If you want to convert WTL file to OBJ, FBX, DAE, 3DS, MAX, BLEND, MA, MB, C4D, STL, PLY or WRL, you can use Windows HLK or similar software from the "Hardware Test Log Storage" 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 WTL, try Windows HLK or another comparable tool in the "Hardware Test Log Storage" 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 WTL converter.