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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qunar.com

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

Export

qunar.com

Sponsored

Hosting Provider

Beijing Primezone Technologies Inc.

IP Address

117.122.209.144

Server Location

🇨🇳 Beijing, China

ASN

AS24416

Organization

Beijing Primezone Technologies Inc.

Server

QWS/1.0

Nameservers

ns3.qunar.com.ns8.qunar.com.ns5.qunar.com.ns1.qunar.com.+3 more

Performance

Page Speed

132 KB

22 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Beijing Primezone Technologies Inc.

Technology Stack

1 Technologies Detected

CSS Frameworks

Tailwind CSS

SEO Analysis

D47/100

qunar.comqunar.com

【去哪儿网】机票查询预订，酒店预订，旅游团购，度假搜索，门票预订-去哪儿网Qunar.com

去哪儿Qunar.com提供机票,飞机票,特价机票,打折机票的查询预订；99元春秋航空特惠折扣机票，百元南航、海航惊喜特价机票任您挑选,国航、深航1折特价机票和折扣机票一网打尽，更多打折机票尽在Qunar.com。实时提供上百家旅游预订网站机票报价和航空公司直销机票价格，为您找到最实惠的飞机票信息,是你查询特价机...

Description truncated.

Title Length46 chars

Recommended: 50-60 chars

Description Length169 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

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Crawlability

Sitemap

Type: standard

133 URLs

robots.txt

20 rules

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

38d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.02.2025

Valid Until

28.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

qunar.comqunar.itwww.qunar.it*.trade.qunar.com*.mall.qunar.com*.package.qunar.com*.bus.qunar.com*.qta.qunar.com+12 more

SHA-256 Fingerprint

DA:A4:B9:1D:32:FC:72:4F:D2:27:6D:D5:AC:D0:C8:18:C4:30:F2:0C...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

cache-status

BYPASS

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 19:47:21 GMT

etag

W/"ytBVafTYICAcJgdPZ/bYTg=="

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mailvip1.qunar.com

Domain Information

qunar.com

Domain Age

20y 9m

Created

09.05.2005

Expires

09.05.2026

Last Updated

14.03.2023

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

PingFangSC-Regular

45/100

Readability

/30

12/40

2px · LH 2.00

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

PingFangSC-Regular

Body Font

PingFangSC-Regular

Sans2px

Contrast Ratio

Reading Comfort

~379 CPL

Needs attention

2px

❌ Critical: 2px body text is too small. Increase to at least 14px.

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

❌ Very long lines: ~379 chars/line causes eye strain. Use max-width: 65ch.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

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Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

q.qunarzz.com(2)common.qunarzz.com(1)

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Last analyzed: 17 Feb 2026 at 19:47

Historical Analysis & Change Tracking