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Category: Web servers

IIS

Based on 65 real audits

44
Avg. Performance
88
Avg. Accessibility
84
Avg. Best Practices
90
Avg. SEO
65
Avg. Security
72
Avg. Composite
44 /100
Avg. Performance
516 ms
Avg. TTFB
72 /100
Avg. Composite
65
Sites Audited

How IIS sites compare

IIS sites tend to score below average on performance (44/100), compared to the global average of 57/100.

Recent Audits

View adoption trends → See all 65 websites using IIS →
SitePerformanceGradeAudited
tobaccoseed.co.uk69B2026-07-20
www.eurovoyages.net56B2026-07-20
coobiz.it22C2026-07-12
finecobank.com27C2026-07-10
www.ikv.org.tr52C2026-05-10
www.compliancewire.com83C2026-05-10
online.secure-logistics.nl54C2026-05-10
paylocity.com31C2026-04-23
hktdc.com12D2026-04-23
netapp.com52D2026-04-22

Commonly Used With

Sites that use IIS also commonly use:

Microsoft IIS Server 65Windows Server Operating systems 63Microsoft ASP.NET Web frameworks 45Google Search Console Analytics 44ASP.NET Runtime 43Microsoft 365 Email 39Google Tag Manager Tag managers 37jQuery JavaScript libraries 34Google Analytics Analytics 32Open Graph Miscellaneous 30

Compare with...

IIS vs Microsoft IISIIS vs Windows ServerIIS vs Microsoft ASP.NETIIS vs Google Search ConsoleIIS vs ASP.NETIIS vs Microsoft 365IIS vs Google Tag ManagerIIS vs jQueryIIS vs Google AnalyticsIIS vs Open Graph

FAQ

What is the average Lighthouse performance score for IIS sites?
Based on 65 real audits, IIS sites score an average of 44/100 on Lighthouse performance.
How does IIS compare on web security?
IIS sites score an average security grade of 65/100 in BeaverCheck audits.
What is the average page load time for IIS websites?
The average Time to First Byte (TTFB) for IIS sites is 516ms based on 65 audits.
How can I improve my IIS site's performance?
Run a free audit on BeaverCheck to get specific recommendations for your IIS site. Common issues include render-blocking resources, unoptimized images, and missing caching headers.

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