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.

Back to Search

lnmp.org

https://lnmp.org· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

lnmp.org

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

47.254.56.155

Server Location

🇺🇸 Minkler, United States

ASN

AS45102

Organization

Alibaba Cloud - US

Server

Nginx

Nameservers

bill.dnspod.net.victory.dnspod.net.

Performance

Page Speed

11 KB

4 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Nginx

Languages

PHPv5.6.40

SEO Analysis

F35/100

lnmp.orglnmp.org

LNMP一键安装包 - CentOS/RadHat/Debian/Ubuntu下自动编译安装Nginx,PHP,MySQL,PHPM...

LNMP一键安装包是一个用Linux Shell编写的可以为CentOS/RadHat/Fedora、Debian/Ubuntu/Raspbian VPS或独立主机安装LNMP、LNMPA、LAMP生产环境的Shell程序。同时提供一些实用的辅助工具如：虚拟主机管理、FTP用户管理、Nginx、MySQL/Mar...

Title truncated. Description truncated.

Title Length73 chars

Recommended: 50-60 chars

Description Length241 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

8 issues found

Upgrade to view details

Sponsored

Security Score

0%Critical

No SSL

No WAF

N/A

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Fri, 20 Feb 2026 00:23:57 GMT

server

nginx

vary

Accept-Encoding

x-pingback

https://lnmp.org/action/xmlrpc

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

m1.feishu.cn

Domain Information

lnmp.org

Domain Age

17y 2m

Created

27.11.2008

Expires

14.08.2033

Last Updated

06.09.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Typography & Readability

Arial

45/100

Readability

/30

20/40

13px · LH 1.70

Hierarchy

/20

18/25

2.69x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans35px

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

~94 CPL

Needs attention

35px

15px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.70 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

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

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Sponsored

Last analyzed: 20 Feb 2026 at 00:24

Historical Analysis & Change Tracking