To convert other file formats to the "Performance Log File" file type, you need software like Windows Performance Monitor or a similar tool.
About BLG files
The .BLG file extension typically represents a Windows Performance Counter Log file created by Windows Performance Monitor. System administrators use these files to record CPU, memory, and network metrics over time. Alternatively, a .BLG file can be a plain text BibTeX Log file generated by the LaTeX typesetting system to record errors and warnings when processing bibliography files. Users often need to convert .BLG files because the Microsoft binary format is proprietary, making it impossible to natively read on macOS or Linux. These logs can also exceed hundreds of megabytes, making them slow to process and difficult to share. The BibTeX variant is a plain text file, but users often want to convert it to a universally readable format like PDF to share compilation error reports. The best target format for a Windows Performance .BLG file is CSV or TSV, which allows for easy filtering and analysis in Microsoft Excel or other data tools. Converting BibTeX .BLG files to TXT or PDF is ideal for documentation. Opening or converting Microsoft .BLG files is notoriously difficult because it is a closed, binary format. Standard online converters fail to process it because it lacks open-source parsing libraries. Typically, only the original Windows OS utility can properly read or export the data. However, you can use convert.guru. Just drag and drop your file to identify the format, view its internal content, and convert it when possible. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your BLG file, detects the exact format, and lets you read the text inside.
If you want to convert BLG file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Windows Performance Monitor or similar software from the "System Performance Logging" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to BLG, try Windows Performance Monitor or another comparable tool in the "System Performance Logging" category.
The BLG 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 BLG converter.