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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it168.com

https://it168.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

it168.com

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

23.179.248.193

Server Location

🇺🇸 O'Fallon, United States

ASN

AS209242

Organization

Replai Network LLC

Server

lyywafcdn

Performance

Page Speed

261 KB

78 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

Technology Stack

6 Technologies Detected

Advertising

Google Ads Google AdSense

Libraries

UI Components

CSS Frameworks

Email Marketing

SEO Analysis

F29/100

it168.comit168.com

盛拓优讯IT168

IT168是中国最大的个人和企业IT产品选购、互动网站,每日提供最新的IT产品报价、促销行情、手机、平板、笔记本、相机和企业等50个频道提供最专业的产品选购和使用建议。

Title Length9 chars

Recommended: 50-60 chars

Description Length84 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Missing viewport meta tag - page may not be mobile-friendly

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

500 URLs

robots.txt

2 rules

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

289d

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

01.11.2025

Valid Until

02.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.it168.comit168.com

SHA-256 Fingerprint

36:4E:79:05:6C:5B:36:1A:6A:5B:DD:21:56:CC:88:39:E3:54:78:4A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, no-store, must-revalidate)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 17:47:22 GMT

server

lyywafcdn

set-cookie

guard

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

it168.com

Domain Age

26y 9m

Created

25.05.1999

Expires

25.05.2026

Last Updated

03.03.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Microsoft Yahei

46/100

Readability

/30

5/40

13px · LH 3.08

Hierarchy

/20

18/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft Yahei

Sans26px

Body Font

Microsoft Yahei

Sans13px

Contrast Ratio

Reading Comfort

~57 CPL

Optimal (45–75)

26px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

⚠️ Wide line spacing (3.08). Consider 1.4-1.8 for better flow.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

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

✅ Protected text on images: Using gradient for readability.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.static.it168.com(3)pagead2.googlesyndication.com(2)img.168.it168.com(2)it168.com(2)hm.baidu.com(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 16 Feb 2026 at 17:48

Historical Analysis & Change Tracking