IIL Converter

Extract text from CleanSweep installation logs (IIL)


Drop or upload your .IIL file
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How to extract text from your IIL file

  1. Click the "Select File" button above, and choose your IIL file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert IIL to another file type

To convert IIL installation logs to another format, you need Norton CleanSweep or other System software.

Convert a file to IIL

To convert other file formats to the "Installation Log File" file type, you need software like Norton CleanSweep or a similar tool.


About IIL files

The .iil file extension represents a CleanSweep Installation Log. It was primarily used by Norton CleanSweep, a legacy system optimization utility by Symantec, to record every file, registry key, and system setting changed during a new software installation. Originally managed by CleanSweep, this log allowed the software to perfectly reverse installations and safely uninstall programs without leaving residual digital clutter. The primary disadvantage of the .iil format is its extreme obsolescence. CleanSweep is dead software, and modern operating systems do not utilize or support these specific log files. Furthermore, the format is a proprietary, closed structure that often appears as gibberish in standard text editors. The best conversion targets are TXT or CSV, allowing you to recover the raw text data, file paths, and registry strings for forensic or historical system analysis. This file format is difficult to open or convert because it relies on Symantec's proprietary logging architecture. Often only the original software can properly read or export the structured data.

Convert.Guru analyzes your IIL file, detects the exact format, and lets you read the text inside.

Users also converted BHF, HCT and _DD files.


FAQ

If you want to convert IIL file to , you can use Norton CleanSweep or similar software from the "Installation Tracking Log" category. In the File menu, look for Save As… or Export….

To convert files to IIL, try Norton CleanSweep or another comparable tool in the "Installation Tracking Log" category.



The IIL 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 IIL converter.