What does StackOptic analyze?

StackOptic runs 18 analysis modules on any public website from a single URL. It detects 7,000+ technologies (CMS, frameworks, analytics, payments, CDN, hosting), evaluates SSL certificates and HTTP security headers with grades from A+ to F, measures Core Web Vitals (LCP, CLS, TBT, FCP), audits SEO meta tags and structured data, checks email security (SPF, DKIM, DMARC), analyzes AI & LLM readiness including bot access and llms.txt validation, extracts color palettes and typography, estimates carbon footprint, and generates permanent shareable reports.

Does it work on sites behind Cloudflare or bot protection?

Yes. StackOptic uses a real browser engine that loads pages exactly like a human visitor — executing JavaScript, rendering CSS, and handling redirects. This allows it to bypass Cloudflare, LiteSpeed, Sucuri, and other bot protection systems where traditional crawlers and HTTP-only tools fail.

What do I get on the free plan?

The free plan includes 5 analyses per day with access to all 18 modules, full scores, technology detection, and security grades. Every report is permanently accessible via a unique shareable URL — no login required to view. No credit card needed. AI-powered insights, re-analysis, PDF/JSON export, and comparison features are available on Pro ($24/mo) and Agency ($99/mo) plans.

What is AI & LLM readiness analysis?

This module evaluates how visible and citable your website is to AI search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude. It audits access permissions for 8 major AI bots, validates llms.txt and llms-full.txt files, scores citation-ready content structure, and analyzes structured data (JSON-LD) for GEO readiness — helping you rank in the next generation of search.

How long does an analysis take?

Most analyses complete in under 10 seconds. StackOptic runs all 18 modules in parallel using a real browser session, so you get technology detection, security audit, performance metrics, SEO analysis, and AI readiness scoring simultaneously.

How accurate are the results?

Detection is based on real browser execution — DOM inspection, JavaScript runtime analysis, HTTP headers, and DNS records. With 7,000+ technology signatures and Lighthouse-calibrated performance scoring, StackOptic achieves high accuracy for mainstream technologies.

What security checks are performed?

The security module evaluates SSL/TLS certificates, 12+ HTTP security headers (HSTS, CSP, X-Frame-Options, Permissions-Policy, Referrer-Policy), HTTPS enforcement, and email authentication (SPF, DKIM, DMARC). Each site receives a letter grade from A+ to F with specific remediation steps.

Do you store the websites I analyze?

StackOptic only stores publicly available information that any visitor to a website would see — HTML content, HTTP headers, DNS records, and screenshots. We do not access private data, log in to websites, or perform any intrusive testing.

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nirsoft.net

https://nirsoft.net· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

nirsoft.net

Mobile

Sponsored

Hosting Provider

HostDime.com, Inc.

IP Address

107.190.138.58

Server Location

🇺🇸 Orlando, United States

ASN

AS33182

Organization

HostDime.com, Inc.

Server

Apache

Nameservers

dns3.easydns.org.dns1.easydns.com.dns2.easydns.net.

Performance

Page Speed

394 KB

32 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

HostDime.com, Inc.

Technology Stack

12 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Analytics

CSS Frameworks

Icon Libraries

Fonts

Payments

Social

Web Servers

SEO Analysis

D50/100

nirsoft.netnirsoft.net

NirSoft - freeware utilities: password recovery, system utilities, ...

Unique collection of freeware desktop utilities, system utilities, password recovery tools, and more

Title truncated.

Title Length84 chars

Recommended: 50-60 chars

Description Length100 chars

Recommended: 120-160 chars

Issues (2)

• Many images missing alt text (3/3)
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

23.12.2025

Valid Until

23.03.2026

Subject Alternative Names (11)

*.win7dll.infodownload2.nirsoft.netextension.nirsoft.netmail.nirsoft.netnirsoft.netshellfix.nirsoft.netwin7dll.infowin7dll.nirsoft.net+3 more

SHA-256 Fingerprint

90:E5:98:EF:59:B6:6A:0D:28:A0:21:76:2A:C4:52:99:86:3D:32:38...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

Keep-Alive

content-type

text/html; charset=UTF-8

date

Sun, 15 Feb 2026 00:55:13 GMT

keep-alive

timeout=5, max=100

server

Apache

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

nirsoft.net

Domain Information

nirsoft.net

Domain Age

21y 5m

Created

26.08.2004

Expires

26.08.2029

Last Updated

11.08.2024

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis mentioned

Typography & Readability

Open Sans + Times New Roman

46/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

15/25

1.09x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Open Sans

Sans18px

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

~67 CPL

Optimal (45–75)

18px

14px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Risky: Text appears on background images without overlay protection.

✅ Optimal line length: ~67 characters per line is comfortable to read.

GGoogle Fonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cse.google.com(2)pagead2.googlesyndication.com(2)fundingchoicesmessages.google.com(2)googletagmanager.com(1)google.com(1)

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Last analyzed: 15 Feb 2026 at 00:55

Historical Analysis & Change Tracking