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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yidianzixun.com

https://yidianzixun.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

yidianzixun.com

Sponsored

Hosting Provider

Beijing Kingsoft Cloud Internet Technology Co., Ltd.

IP Address

120.92.90.222

Server Location

🇨🇳 Beijing, China

ASN

AS59019

Organization

Beijing Kingsoft Cloud Internet Technology Co., Ltd.

Nameservers

vip4.alidns.com.vip3.alidns.com.

Performance

Page Speed

15 KB

12 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Beijing Kingsoft Cloud Internet Technology Co., Ltd.

Technology Stack

3 Technologies Detected

Libraries

jQueryv3.7.1

CSS Frameworks

Tailwind CSS

Frameworks

Express

SEO Analysis

F29/100

yidianzixun.comyidianzixun.com

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Title Length4 chars

Recommended: 50-60 chars

Description Length93 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (5/5)

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

19 URLs

robots.txt

2 rules

Sponsored

A+

Security Score

96%Excellent

Static / Informational

HTTPS

No WAF

156d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.07.2025

Valid Until

23.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.yidianzixun.comyidianzixun.com

SHA-256 Fingerprint

08:56:97:7E:BC:C9:7E:A3:A7:BF:49:D2:27:18:F4:AC:C3:BC:C5:5A...

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

connect-src venus.yidianzixun.com:9001 venus.yidianzixun.com...

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 23:50:22 GMT

etag

W/"2974-z8uWlNBtaEXCqfNoGYDPvA"

strict-transport-security

max-age=15724800; includeSubDomains

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx.sendcloud.org

Domain Information

yidianzixun.com

Domain Age

12y 7m

Created

12.07.2013

Expires

12.07.2027

Last Updated

09.05.2024

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

PingFangSC-Regular

43/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

PingFangSC-Regular

Body Font

PingFangSC-Regular

Sans14px

Contrast Ratio

Reading Comfort

~60 CPL

Optimal (45–75)

18px

14px

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

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

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

✅ Optimal line length: ~60 characters per line is comfortable to read.

⚠️ Cramped layout: 34 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

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.yidianzixun.com(4)

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Last analyzed: 17 Feb 2026 at 23:50

Historical Analysis & Change Tracking