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

fudan.edu.cn

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

Export

fudan.edu.cn

Mobile

Sponsored

Hosting Provider

CERNET

IP Address

175.186.248.54

Server Location

🇨🇳 Shanghai, China

ASN

AS4538

Server

Apache

Nameservers

ns1.fudan.edu.cn.ns2.fudan.edu.cn.ns4.fudan.edu.cn.ns3.fudan.edu.cn.

Performance

Page Speed

11.8 MB

182 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

CERNET

Detected API Sources

/_upload/tpl/00/0e/14/template...

Technology Stack

5 Technologies Detected

UI Components

Slick Carousel Fancybox

Libraries

jQueryv3.4.1

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

F35/100

fudan.edu.cnfudan.edu.cn

复旦大学 Fudan University

复旦大学（Fudan University），简称“复旦”，位于中国上海，由中华人民共和国教育部直属，中央直管副部级建制，国家双一流（A类）、985工程、211工程建设高校，入选珠峰计划、111计划、2011计划、卓越医生教育培养计划、卓越法律人才教育培养计划、国家建设高水平大学公派研究生项目，九校联盟（C9）、...

Description truncated.

Title Length21 chars

Recommended: 50-60 chars

Description Length211 chars

Recommended: 120-160 chars

Issues (2)

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

8 issues found

Upgrade to view details

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

99d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

sslTrus

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

23.04.2025

Valid Until

24.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.fudan.edu.cnfudan.edu.cn

SHA-256 Fingerprint

A8:00:28:7F:2A:B0:4B:1D:43:29:26:95:95:54:71:EA:CD:D4:42:2D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

37041

content-type

text/html

date

Sat, 14 Feb 2026 12:16:40 GMT

frame-options

SAMEORIGIN

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

mailrelay1.fudan.edu.cn

mx-fudan-edu-cn.icoremail.net

mailrelay2.fudan.edu.cn

Domain Information

fudan.edu.cn

DNSSEC

Not Enabled

Typography & Readability

Noto Serif CJK SC

33/100

Readability

/30

24/40

14px · LH 1.86

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Serif CJK SC

Serif

Body Font

Noto Serif CJK SC

Serif14px

Contrast Ratio

Reading Comfort

~50 CPL

Optimal (45–75)

35px

18px

14px

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

✅ 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.

✅ Optimal line length: ~50 characters per line is comfortable to read.

⚠️ Cramped layout: 26 elements lack adequate spacing.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)hm.baidu.com(1)

Sponsored

Last analyzed: 14 Feb 2026 at 12:17

Historical Analysis & Change Tracking