How to Parse IIS Logs using Log Parser Studio

Logs, Logs, Logs!!!

Ever had to parse mounds of IIS web server logs for specific metrics? It can be quite painful and time-consuming!

Log Parser Studio is a fantastic utility designed for this very purpose. It can parse various flat file formats using an SQL like query language.

Some of its features include:

  • Ability to parse a variety of log file formats including, W3SVC/IIS, CSV, HTTP etc.
  • Query log files using an SQL like query language
  • Generate reports
  • Generate a PowerShell script containing your query.


Installing Log Parser Studio

  1. Download and install the Log Parser framework from
  2. Download and run the Log Parser Studio GUI from


Quick Demo

In my case, I wanted to obtain a list of distinct users who had accessed my IIS website over a specific time frame.

  1. Open Log Parser Studio  Log Parser Studio Screenshot
  2. Choose the log files you want to queryLog Parser Studio Screenshot
  3. Create a NEW QUERYLog Parser Studio Screenshot
  4. Specify the types of log files you have – in my case IIS log files.
  5. Execute your queryLog Parser Studio Screenshot



Log Parser is one of the great little utilities that every Microsoft developer should add to their tool bag. Definitely worth a look!

Shane Bartholomeusz

Shane Bartholomeusz

G’day, I’m a technical solutions consultant based in Perth, Australia that specialises in the Microsoft technology stack, including .NET, Dynamics 365, Azure and general web development etc.

This blog is my place to share my thoughts, helpful solutions and just random nerdy stuff.
Shane Bartholomeusz

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