Extract text from LISUN photometric files (IGF)
To convert IGF photometric files to another format, you need LISUN Software or other Data software.
To convert other file formats to the "Photometric Light Data" file type, you need software like LISUN Software or a similar tool.
The .IGF file extension is primarily associated with proprietary photometric data generated by LISUN Group goniophotometers. These files contain raw light distribution measurements used to verify the performance of lamps and luminaires.
Because .IGF is a hardware-specific format designed for the LISUN testing ecosystem, it is a common issue for lighting designers and engineers who work in standard simulation environments. You generally cannot open these files directly in industry-standard tools like DIALux, Relux, or AGi32 without first converting them. Furthermore, unlike the ASCII-based IES or LDT formats, .IGF files are often not human-readable, making manual debugging impossible.
To make this data usable for lighting simulation or client reporting, the best workflow is to convert .IGF files to IES (IESNA standard for North America) or LDT (EULUMDAT standard for Europe). For archiving or sharing test results with non-technical stakeholders, converting to PDF ensures the photometric graphs and polar curves are viewable on any device.
Convert.Guru analyzes your IGF file, detects the exact format, and lets you read the text inside.
Users also converted DGP, ULD and TTP files.
If you want to convert IGF file to , you can use LISUN Software or similar software from the "Photometric Data Storage" category. In the File menu, look for Save As… or Export….
To convert files to IGF, try LISUN Software or another comparable tool in the "Photometric Data 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 IGF converter.