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

cyol.com

https://cyol.com· First analyzed 15 Feb 2026· Updated 15 Feb 2026

Export

cyol.com

Mobile

Sponsored

Hosting Provider

21ViaNet

IP Address

120.133.82.203

Server Location

🇨🇳 Chaowai, China

ASN

AS133119

Organization

21ViaNet

Server

cyol

Nameservers

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

Performance

Page Speed

333 KB

92 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

21ViaNet

Technology Stack

4 Technologies Detected

Libraries

UI Components

Other

CSS Frameworks

SEO Analysis

F35/100

cyol.comcyol.com

中青在线

No description available for this page.

Title Length4 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Many images missing alt text (133/134)

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

568 URLs

robots.txt

Sponsored

Security Score

41%Poor

Interactive

HTTPS

No WAF

278d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

21.11.2025

Valid Until

20.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.cyol.comcyol.com

SHA-256 Fingerprint

09:61:C4:47:B0:3C:31:A7:9A:34:BB:DA:F4:BE:A5:4E:25:5E:DA:80...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sun, 15 Feb 2026 05:08:17 GMT

etag

W/"69914408-16518"

last-modified

Sun, 15 Feb 2026 03:56:56 GMT

server

cyol

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

cyol.com

Domain Age

26y 11m

Created

17.03.1999

Expires

17.03.2027

Last Updated

23.01.2026

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

Microsoft YaHei

48/100

Readability

/30

25/40

18px · LH 2.11

Hierarchy

/20

20/25

1.89x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft YaHei

Sans34px

Body Font

Microsoft YaHei

Sans18px

Contrast Ratio

Reading Comfort

~76 CPL

Optimal (45–75)

34px

18px

16px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Wide line spacing (2.11). Consider 1.4-1.8 for better flow.

✅ Good hierarchy: Clear distinction between headlines and body text.

✅ 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.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

adsame.cyol.com(9)news.cyol.com(8)c.cnzz.com(1)s4.cnzz.com(1)h5.cyol.com(1)

Sponsored

Last analyzed: 15 Feb 2026 at 05:08

Historical Analysis & Change Tracking