IIS Log Viewer IIS Log Viewer

Point this page at a folder of IIS W3C log files (usually C:\inetpub\logs\LogFiles) and get a full analytics dashboard: traffic, visitors, bots, errors, response times, and more.

🔒 Everything runs in your browser on your machine. Your log files are never uploaded anywhere.

What you get

  • Traffic & bandwidth charts, per site, with hourly/daily views
  • Bots vs. humans — Googlebot, GPTBot, AhrefsBot and 50+ crawlers identified
  • Status codes with IIS substatus detail (404.0, 401.3, …) and an error drill-down
  • Response-time percentiles, slowest endpoints, top pages & referrers
  • Visitor countries — resolved offline, right in your browser
  • Live tail: the dashboard updates as IIS writes new log lines

Works with standard IIS W3C extended log files (u_ex*.log), including custom fields. Free, no account, no install.

IIS Log Viewer IIS Log Viewer

live

Traffic over time

Status codes over time click a bar to filter

Status detail status.substatus

Activity heatmap local time

Bots leaderboard

Top pages click a row to filter

PageHitsBytesAvg time

External referrers

Referring siteHits

Browsers humans only

Operating systems humans only

HTTP methods

Visitor countries

CountryHitsIPsShare
IP geolocation by DB-IP

Top client IPs

IP addressCountryHitsBytes

Response time percentiles

Slowest endpointsHitsAvgMax

Errors

TimeSiteStatusMethodURLClient

Live tail newest requests as IIS writes them