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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nhandan.vn

https://nhandan.vn· First analyzed 18 Feb 2026· Updated 18 Feb 2026

Export

nhandan.vn

Sponsored

Hosting Provider

FPT-STATICIP

IP Address

42.112.59.46

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS18403

Nameservers

ns1.vdconline.vn.ns2.vdconline.vn.

Performance

Page Speed

161 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

FPT-STATICIP

Technology Stack

9 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Google Ads Google AdSense

Libraries

UI Components

CSS Frameworks

Fonts

SEO Analysis

A88/100

nhandan.vnnhandan.vn

Báo Nhân Dân điện tử

Báo Nhân Dân, Cơ quan Trung ương của Đảng Cộng sản Việt Nam, Tiếng nói của Đảng, Nhà nước và nhân dân Việt Nam, ra số đầu ngày 11-3-1951 tại Chiến khu Việt B...

Description truncated.

Title Length20 chars

Recommended: 50-60 chars

Description Length203 chars

Recommended: 120-160 chars

Issues (0)

2 issues found

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Crawlability

Sitemap

Type: index

196 URLs

robots.txt

10 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

195d

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/2+H3

Valid From

31.07.2025

Valid Until

01.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

nhandan.vn*.nhandan.vn

SHA-256 Fingerprint

B9:64:78:6E:08:75:8A:7C:03:60:FF:AF:C1:C8:2C:78:CD:C0:86:10...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=utf-8

date

Wed, 18 Feb 2026 05:01:19 GMT

etag

d2d318cad34bb7e8f752d83b27433986

server-time

1771389616

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mail.nhandan.vn

Domain Information

nhandan.vn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Arial

67/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

25/25

2x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Sans28px

Body Font

Arial

Sans14px

Contrast Ratio

Reading Comfort

~65 CPL

Optimal (45–75)

28px

21px

16px

14px

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

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

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

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

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

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

common.mcms.one(3)googletagmanager.com(2)static.chartbeat.com(2)cdn.nhandan.vn(2)za.zdn.vn(1)

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Last analyzed: 18 Feb 2026 at 05:01

Historical Analysis & Change Tracking