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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tianyancha.com

https://tianyancha.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

tianyancha.com

Sponsored

Hosting Provider

Huawei Cloud Service

IP Address

116.205.76.152

Server Location

🇨🇳 Beijing, China

ASN

AS55990

Organization

Huawei Cloud Service

Server

Nameservers

dns31.hichina.com.dns32.hichina.com.

Performance

Page Speed

3 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Huawei Cloud Service

Technology Stack

1 Technologies Detected

Analytics

Sentry

SEO Analysis

D47/100

tianyancha.comtianyancha.com

天眼查-商业查询平台_企业信息查询_公司查询_工商查询_企业信用信息系统

天眼查专注服务于个人与企业信息查询,都在用的商业查询平台,为您提供公司查询,工商信息查询,企业查询,工商查询,企业信用信息查询等相关信息,帮您快速了解企业信息,企业工商信息,企业信用信息等企业经营和人员投资状况,查询更多企业信息就到天眼查官网！

Title Length36 chars

Recommended: 50-60 chars

Description Length122 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

45 rules

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

47d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

05.03.2025

Valid Until

05.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tianyancha.comtianyancha.com

SHA-256 Fingerprint

D7:05:23:1A:E8:DC:BB:00:70:FF:E3:FA:64:7F:DE:C9:8E:83:F6:B9...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-length

3295

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 17:47:44 GMT

server

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

tianyancha.com

Domain Age

11y 1m

Created

23.12.2014

Expires

23.12.2026

Last Updated

11.02.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

SF Pro Text

49/100

Readability

/30

32/40

14px · LH 1.57

Hierarchy

/20

11/25

1.14x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

SF Pro Text

Sans16px

Body Font

SF Pro Text

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

16px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.57 ratio ensures comfortable reading.

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

✅ Good performance: Using 1 font families keeps load times fast.

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

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

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Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.tianyancha.com(1)

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Last analyzed: 17 Feb 2026 at 17:48

Historical Analysis & Change Tracking