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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wjx.top

https://wjx.top· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

wjx.top

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

101.37.44.198

Server Location

🇨🇳 Hangzhou, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Performance

Page Speed

151 KB

71 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

5 Technologies Detected

Libraries

Other

UI Components

Other

CSS Frameworks

SEO Analysis

C64/100

wjx.topwjx.top

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Title Length15 chars

Recommended: 50-60 chars

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag - page may not be mobile-friendly

5 issues found

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Crawlability

Sitemap

robots.txt

56 rules

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

369d

Certificate Details

Type

Domain Validated (DV)

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

24.01.2026

Valid Until

22.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.wjx.cnwjx.cn

SHA-256 Fingerprint

DA:9A:F3:59:1C:5F:6A:B0:82:42:E7:1B:A1:C5:B4:D1:D3:E4:F3:E0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟣 Private(private)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

16179

content-type

text/html; charset=utf-8

date

Wed, 18 Feb 2026 05:55:44 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

wjx.top

Domain Age

8y 11m

Created

28.02.2017

Expires

28.02.2027

Last Updated

27.04.2021

Registrar

阿里云计算有限公司

DNSSEC

Not Enabled

Typography & Readability

Helvetica Neue

63/100

Readability

/30

17/40

14px · LH 2.86

Hierarchy

/20

21/25

4.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Helvetica Neue

Sans60px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

center aligned

60px

44px

26px

16px

14px

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

⚠️ Wide line spacing (2.86). Consider 1.4-1.8 for better flow.

✅ Strong hierarchy: Headlines are 4.3x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Consistent design: Single font family with weight variations is a modern best practice.

✅ Protected text on images: Using gradient for readability.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(5)hm.baidu.com(1)image.wjx.cn(1)

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Last analyzed: 18 Feb 2026 at 05:55

Historical Analysis & Change Tracking