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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jiemian.com

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

Export

jiemian.com

Sponsored

Hosting Provider

CloudVsp.Inc

IP Address

123.59.198.196

Server Location

🇨🇳 Beijing, China

ASN

AS23724

Server

Nginx

CDN

Nameservers

ns2.ename.net.ns1.ename.net.

Performance

Page Speed

24 KB

92 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

CloudVsp.Inc

CDN

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Web Servers

SEO Analysis

F29/100

jiemian.comjiemian.com

界面新闻-只服务于独立思考的人群-Jiemian.com

界面新闻是中国具有影响力的原创财经新媒体，以财经、商业新闻为核心，布局近40个内容频道，旗下同时拥有正午故事、箭厂视频、歪楼等数个知名新媒体品牌。

Title Length28 chars

Recommended: 50-60 chars

Description Length73 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (47/76)

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

3 rules

Sponsored

Security Score

66%Fair

Interactive

HTTPS

No WAF

239d

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/1.1

Valid From

12.09.2025

Valid Until

14.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.jiemian.comjiemian.com

SHA-256 Fingerprint

C0:26:0A:96:A2:3E:8B:4F:75:15:AA:11:25:32:E6:DC:7A:25:D5:84...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟣 Private(private)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 17 Feb 2026 07:06:44 GMT

expires

Thu, 01 Aug 2018 09:12:36 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mxbiz2.qq.com

mxbiz1.qq.com

Domain Information

jiemian.com

Domain Age

12y 4m

Created

28.09.2013

Expires

28.09.2027

Last Updated

31.03.2025

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Typography & Readability

PingFang SC

18/100

Readability

/30

12/40

12px · LH 1.33

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

PingFang SC

Body Font

PingFang SC

Sans12px

Contrast Ratio

Reading Comfort

~86 CPL

Needs attention

16px

12px

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

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

⚠️ Risky: Text appears on background images without overlay protection.

⚠️ Wide lines: ~86 chars/line. Consider max-width for better reading flow.

⚠️ Cramped layout: 135 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

21 Resources

Scripts

Styles

Async

Defer

Top Script Sources

res.jiemian.com(15)ad.jiemian.com(1)

Sponsored

Last analyzed: 17 Feb 2026 at 07:07

Historical Analysis & Change Tracking