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

eol.cn

https://eol.cn· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

eol.cn

Sponsored

Hosting Provider

BJR Cernet

IP Address

202.205.109.2

Server Location

🇨🇳 Haidian, China

ASN

AS4538

Organization

BJR Cernet

Server

Apache

Nameservers

dns1.resource.edu.cn.dns2.resource.edu.cn.

Performance

Page Speed

1 MB

100 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

BJR Cernet

Technology Stack

5 Technologies Detected

Libraries

UI Components

CSS Frameworks

Analytics

Web Servers

SEO Analysis

F35/100

eol.cneol.cn

教育在线-推动教育前进的力量

“作为中国教育的联结者和赋能者，教育在线致力于成为推动中国教育前行的力量。多年来，教育在线专注教育领域，坚持满足各类教育需求，对接国内外2000余所高校、3000余所高中，覆盖全国30余个省市，发布各类权威的招考、就业、辅导等权威的教育信息，专注于为国内外各大高校、科研院所、教育机构提供从招生服务，到信息化应用服...

Description truncated.

Title Length14 chars

Recommended: 50-60 chars

Description Length180 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (113/120)

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

55d

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/2

Valid From

27.03.2025

Valid Until

12.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.eol.cneol.cn

SHA-256 Fingerprint

6E:BF:34:F1:3C:48:A6:3D:48:7D:A8:D2:A1:6F:DB:15:B7:5D:27:6B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-headers

Content-Type

access-control-allow-methods

GET, POST, OPTIONS

access-control-allow-origin

cache-control

🟡 120s(max-age=120)

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

MX Records (1)

eol-cn.mail.protection.outlook.com

Domain Information

eol.cn

DNSSEC

Not Enabled

Typography & Readability

Microsoft Yahei + socialshare

18/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Microsoft Yahei

Sans

Body Font

socialshare

Sans12px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

36px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 21 elements lack adequate spacing.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)api.map.baidu.com(2)misc.eol.cn(2)zz.bdstatic.com(1)dlswbr.baidu.com(1)

Sponsored

Last analyzed: 16 Feb 2026 at 21:29

Historical Analysis & Change Tracking