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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safedog.cn

https://safedog.cn· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

safedog.cn

Sponsored

Hosting Provider

China Mobile

IP Address

111.50.138.18

Server Location

🇨🇳 Guangzhou, China

ASN

AS9808

Organization

China Mobile

Server

Nginx

Nameservers

dns10.hichina.com.dns9.hichina.com.

Performance

Page Speed

4.1 MB

75 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

Vue.js

Infrastructure

Hosting

China Mobile

Technology Stack

5 Technologies Detected

Frameworks

Libraries

UI Components

CSS Frameworks

Web Servers

SEO Analysis

F29/100

safedog.cnsafedog.cn

安全狗-领先云安全服务与解决方案提供商|云原生安全|服务器安全|网站安全|态势感知

安全狗,领先云安全服务与解决方案提供商,融合大数据分析、可视化、态势感知、威胁情报分析技术，为客户提供一站式云安全产品、服务和解决方案,实现服务器、网站及业务的安全稳定运行。

Title Length41 chars

Recommended: 50-60 chars

Description Length87 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (4/5)
• Missing viewport meta tag - page may not be mobile-friendly

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

81%Very Good

Interactive

HTTPS

No WAF

284d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

27.10.2025

Valid Until

28.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.safedog.cnsafedog.cn

SHA-256 Fingerprint

3F:47:4B:44:EE:6F:40:17:3F:DC:04:61:FA:21:C6:5C:E0:FC:9D:51...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-language

zh-CN

content-security-policy

self

content-type

text/html;charset=UTF-8

date

Tue, 17 Feb 2026 08:40:48 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (3)

mx1.feishu.cn

mx2.feishu.cn

mx3.feishu.cn

Domain Information

safedog.cn

DNSSEC

Not Enabled

Typography & Readability

Muli

46/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Muli

Body Font

Muli

Sans16px

Contrast Ratio

Reading Comfort

~100 CPL

Needs attention

16px

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

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

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

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

⚠️ Wide lines: ~100 chars/line. Consider max-width for better reading flow.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

19 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)zz.bdstatic.com(1)hm.baidu.com(1)

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Last analyzed: 17 Feb 2026 at 08:41

Historical Analysis & Change Tracking