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.

Back to Search

ganji.com

https://ganji.com· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

ganji.com

Sponsored

Hosting Provider

Tencent Cloud

cloud.tencent.com

IP Address

43.144.202.142

Server Location

🇨🇳 Beijing, China

ASN

AS45090

Organization

Tencent Cloud Computing (Beijing) Co., Ltd

Server

Tengine

Nameservers

ns3.dnsv5.com.ns4.dnsv5.com.

Performance

Page Speed

1.2 MB

73 requests

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Tencent Cloud

Detected API Sources

https://aris.58.com/web/api/sh...

Technology Stack

2 Technologies Detected

Libraries

jQuery

Web Servers

Tengine

SEO Analysis

F17/100

ganji.comganji.com

用户登录-58同城

No description available for this page.

Title Length9 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1
• Many images missing alt text (31/35)

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

48d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

07.03.2025

Valid Until

08.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (9)

*.58.comapiwmda.58.com.cnjxedt.comxueche.com*.jxedt.com*.m.58.com*.vip.58.com*.xueche.com+1 more

SHA-256 Fingerprint

10:BB:D6:81:F5:33:EE:BD:81:C8:A5:AE:12:95:FA:6A:A3:B4:9B:6B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

779

content-type

text/html;charset=UTF-8

date

Wed, 18 Feb 2026 09:14:06 GMT

eo-cache-status

MISS

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

ganji.com

Domain Age

24y 5m

Created

04.09.2001

Expires

04.09.2026

Last Updated

26.02.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

PingFangSC-Medium

41/100

Readability

/30

10/40

10px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

PingFangSC-Medium

Body Font

PingFangSC-Medium

Sans10px

Contrast Ratio

Reading Comfort

Single Family

left aligned

10px

❌ Critical: 10px body text is too small. Increase to at least 14px.

✅ Good performance: Using 2 font families keeps load times fast.

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

23 Resources

Scripts

Styles

Async

Defer

Top Script Sources

j1.58cdn.com.cn(17)res.wx.qq.com(2)callback.58.com(1)

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Last analyzed: 18 Feb 2026 at 09:14

Historical Analysis & Change Tracking