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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cntv.cn

https://cntv.cn· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

cntv.cn

Mobile

Sponsored

Hosting Provider

CDNetworks

IP Address

163.171.134.109

Server Location

🇸🇪 Stockholm, Sweden

ASN

AS54994

Organization

CDNetworks

Server

CCTVAMCLOUD

Performance

Page Speed

1.2 MB

159 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CDNetworks

Technology Stack

3 Technologies Detected

Libraries

jQueryv1.7.2

Animate.css

CSS Frameworks

Tailwind CSS

SEO Analysis

D41/100

cntv.cncntv.cn

央视网_世界就在眼前

央视网（www.cctv.com）由中央广播电视总台主办，是以视频为特色的中央重点新闻网站，是央视的融合传播平台，是拥有全牌照业务资质的大型互联网文化企业。秉承“融合创新、一体发展”的理念，以新闻为龙头，以视频为重点，以用户为中心，建成“一网一端多平台多渠道”融媒体传播体系。

Title Length10 chars

Recommended: 50-60 chars

Description Length138 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (257/324)
• Missing viewport meta tag - page may not be mobile-friendly

7 issues found

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Crawlability

Sitemap

robots.txt

364 rules

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

79d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

01.04.2025

Valid Until

03.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

cctv.comolympicchannelchina.cnipanda.comcctvpic.comipanda.cnipanda.com.cncntv.com.cncntv.cn+12 more

SHA-256 Fingerprint

9B:59:78:29:F2:89:ED:E4:3E:5A:3C:68:37:EE:C0:27:6A:AB:EF:D0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

169

cache-control

🔴 No Cache(no-store)

connection

keep-alive

content-type

text/html

date

Fri, 13 Feb 2026 00:02:55 GMT

expires

Fri, 13 Feb 2026 00:03:06 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

cntv.cn

DNSSEC

Not Enabled

Typography & Readability

PingFangSC-Regular

16/100

Readability

/30

17/40

14px · LH 2.43

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

PingFangSC-Regular

Sans

Body Font

PingFangSC-Regular

Sans14px

Contrast Ratio

Reading Comfort

~125 CPL

Needs attention

26px

16px

26px

14px

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

⚠️ Wide line spacing (2.43). Consider 1.4-1.8 for better flow.

✅ Good performance: Using 2 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.

❌ Very long lines: ~125 chars/line causes eye strain. Use max-width: 65ch.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

r.img.cctvpic.com(6)cctv.com(3)js.player.cntv.cn(3)p1.img.cctvpic.com(2)p.data.cctv.com(1)

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Last analyzed: 13 Feb 2026 at 00:04

Historical Analysis & Change Tracking