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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elecfans.com

https://elecfans.com· First analyzed 20 Feb 2026· Updated 20 Feb 2026

Export

elecfans.com

Sponsored

Hosting Provider

Chinanet GD

IP Address

14.215.130.203

Server Location

🇨🇳 Guangzhou, China

ASN

AS4134

Organization

Chinanet GD

Server

Nginx

Nameservers

ns4.dnsv2.com.ns3.dnsv2.com.

Performance

Page Speed

389 KB

250 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet GD

Technology Stack

7 Technologies Detected

Analytics

Libraries

UI Components

Other

CSS Frameworks

Web Servers

SEO Analysis

D47/100

elecfans.comelecfans.com

电子发烧友

电子发烧友网联手全球半导体产业领先企业，为中国电子研发工程师及开发者，提供全面的技术、产业和供应链资讯和在线社区交流服务的平台。

Title Length5 chars

Recommended: 50-60 chars

Description Length65 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (170/201)

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

129 URLs

robots.txt

12 rules

Sitemap reference found

Sponsored

Security Score

31%Critical

Interactive

HTTPS

No WAF

212d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

20.08.2025

Valid Until

20.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.elecfans.comelecfans.com

SHA-256 Fingerprint

BD:FE:88:7D:08:60:5B:3D:59:86:64:21:AD:D4:F9:14:F9:00:1C:9E...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age

639

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Fri, 20 Feb 2026 06:00:17 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

hzmx02.mxmail.netease.com

hzmx01.mxmail.netease.com

Domain Information

elecfans.com

Domain Age

19y 11m

Created

10.03.2006

Expires

10.03.2030

Last Updated

26.12.2025

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

PingFang SC

70/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

15/25

0.86x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

PingFang SC

Sans12px

Body Font

PingFang SC

Sans14px

Contrast Ratio

Reading Comfort

~54 CPL

Optimal (45–75)

12px

20px

14px

16px

14px

Minor Third

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ 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

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(8)skin.elecfans.com(3)hm.baidu.com(2)googletagmanager.com(2)google-analytics.com(2)

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Last analyzed: 20 Feb 2026 at 06:00

Historical Analysis & Change Tracking