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Warnings and errors will be send to the windows event log.

IISpeed exposes a few urls that allow viewing diagnostic information:

By default, these urls are only accessible from the local machine. If you want them to be publically accessible, or authorize them yourself using the request filtering module, you can add this to iispeed.config:

IISpeed InfoUrlsLocalOnly off

Viewing the last few IISpeed log messages

PageSpeed Logging

These messages are collected globally from all worker processes.

Global statistics and configuration can be viewed at

PageSpeed global statistics

Per website statistics and configuration can be viewed at

PageSpeed WebSite statistics

The PageSpeed console also offers opportunities for monitoring your IISpeed installation

PageSpeed Console


IISpeed debug output can be viewed using DebugView (downloadable at microsoft technet).

To get as much debug information as possible, you can also put a line containing "IISpeed diagnose" into the root configuration file.

If you're capturing diagnostics of IISpeed via DebugView, make sure to enable "Capture Global Win32"

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Some content on this website represents a modified version of the official Google PageSpeed documentation