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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youth.cn

https://youth.cn· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

youth.cn

Mobile

Sponsored

Hosting Provider

Meteverse Limited

IP Address

168.235.193.71

Server Location

🇬🇧 London, United Kingdom

ASN

AS54994

Server

Nginx

Performance

Page Speed

530 KB

62 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Meteverse Limited

Technology Stack

4 Technologies Detected

Libraries

UI Components

CSS Frameworks

Web Servers

SEO Analysis

F35/100

youth.cnyouth.cn

中国青年网_青年温度、青春靓度、青网态度

中国青年网，1999年5月4日正式开通，共青团中央主办的中央重点新闻网站，是国内最大的青年主流网站。中国青年网竭诚服务青年的文化、心理、情感和创业需求，是共青团运用网络文化元素吸引青年的新载体和引导青年的新途径，为团组织通过新媒体融入青年提供有力支撑。中国青年网拥有400余个子网站，2000多个栏目，用文字、图...

Description truncated.

Title Length20 chars

Recommended: 50-60 chars

Description Length251 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (39/46)

8 issues found

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Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

83d

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

07.04.2025

Valid Until

08.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.youth.cnyouth.cn

SHA-256 Fingerprint

DE:AC:79:64:72:CF:40:4B:34:EC:BE:99:AC:54:25:A7:BE:A8:40:80...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sat, 14 Feb 2026 01:45:08 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mail.youth.cn

mailgw.youth.cn

Domain Information

youth.cn

DNSSEC

Not Enabled

Typography & Readability

Microsoft YaHei

36/100

Readability

/30

17/40

14px · LH 2.86

Hierarchy

/20

8/25

1.14x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft YaHei

Sans16px

Body Font

Microsoft YaHei

Sans14px

Contrast Ratio

Reading Comfort

~256 CPL

Needs attention

16px

20px

18px

14px

Minor Second

Scale

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

⚠️ Wide line spacing (2.86). Consider 1.4-1.8 for better flow.

⚠️ 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.

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

youth.cn(3)hm.baidu.com(1)d.webterren.com(1)m.youth.cn(1)cl5.webterren.com(1)

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Last analyzed: 14 Feb 2026 at 01:46

Historical Analysis & Change Tracking