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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2345.com

https://2345.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

2345.com

Sponsored

Hosting Provider

CHINA169 Jiangsu Province Network

IP Address

103.255.201.148

Server Location

🇨🇳 Suzhou, China

ASN

AS59048

Organization

CHINA169 Jiangsu Province Network

Server

Tengine

CDN

Nameservers

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

Performance

Page Speed

1 MB

250 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CHINA169 Jiangsu Province Network

CDN

Technology Stack

3 Technologies Detected

Libraries

jQueryv1.8.3

CSS Frameworks

Tailwind CSS

Web Servers

Tengine

SEO Analysis

F35/100

2345.com2345.com

2345网址导航－致力于打造百年品牌（已创建20年06个月）

2345.com热门网址导航站网罗精彩实用网址，如音乐、小说、NBA、财经、购物、视频、软件及热门游戏网址大全等，二三四五网址导航提供了多种搜索引擎入口、实用查询、天气预报、个性定制等实用功能，帮助广大网友畅游网络更轻松。

Title Length30 chars

Recommended: 50-60 chars

Description Length111 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (109/148)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

76%Good

Interactive

HTTPS

No WAF

264d

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/2

Valid From

14.10.2025

Valid Until

08.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (6)

*.2345.com*.2345.cn*.hao774.com2345.cn2345.comhao774.com

SHA-256 Fingerprint

AF:66:62:61:F3:79:7C:B1:49:6F:71:96:DA:74:04:AC:C8:18:A1:E4...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

age

426

ali-swift-global-savetime

1771302268

cache-control

🟡 600s(max-age=600)

content-encoding

⚡ Brotli(br)

content-security-policy

img-src http://* https://* data:

content-type

text/html

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

2345.com

Domain Age

28y 1m

Created

19.01.1998

Expires

18.01.2035

Last Updated

04.01.2026

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

Microsoft Yahei

41/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Microsoft Yahei

Body Font

Microsoft Yahei

Sans12px

Contrast Ratio

Reading Comfort

Single Family

left aligned

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 52 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

pos.baidu.com(20)

Sponsored

Last analyzed: 17 Feb 2026 at 04:32

Historical Analysis & Change Tracking