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

dantri.com.vn

https://dantri.com.vn· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

dantri.com.vn

Sponsored

Hosting Provider

VNPT

IP Address

14.225.2.69

Server Location

🇻🇳 Hanoi, Vietnam

ASN

AS135905

Organization

VNPT

Server

Nginx

Nameservers

ns2.dantri.com.vn.ns1.dantri.com.vn.

Performance

Page Speed

446 KB

156 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

VNPT

Technology Stack

14 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Matomo Microsoft Clarity

Advertising

Google Ads Criteo Outbrain

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Payments

Web Servers

Customer Support

SEO Analysis

A82/100

dantri.com.vndantri.com.vn

Tin tức Việt Nam và quốc tế nóng, nhanh, cập nhật 24h | Báo Dân trí

Đọc báo dantri - Tin tức mới nhất, Thông tin nhanh chính xác được cập nhật hàng giờ. báo nói đọc tin tức online Việt Nam Thế giới nóng nhất trong ngày, Kinh ...

Description truncated.

Title Length67 chars

Recommended: 50-60 chars

Description Length296 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

90 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

64d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

24.03.2025

Valid Until

25.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.dantri.com.vndantri.com.vn

SHA-256 Fingerprint

14:BF:17:C9:7B:4C:38:60:6C:FD:56:BE:AF:33:40:72:1C:8D:FD:64...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-credentials

true

access-control-allow-headers

Origin, X-Requested-With, Content-Type, Accept,csrf-token

access-control-allow-methods

GET, POST, PUT, DELETE, OPTIONS

access-control-allow-origin

access-control-expose-headers

Location,Upload-Offset,Upload-Length

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (7)

alt2.aspmx.l.google.com

aspmx.l.google.com

aspmx4.googlemail.com

aspmx3.googlemail.com

+3 more

Domain Information

dantri.com.vn

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

-apple-system

63/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

8/25

1x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

-apple-system

Sans14px

Body Font

-apple-system

Sans14px

Contrast Ratio

Reading Comfort

~39 CPL

Needs attention

14px

16px

14px

Minor Second

Scale

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

✅ Optimal line spacing: 1.43 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.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Advanced

Behavior Analytics

Microsoft ClarityFree

Matomo (Piwik)Mid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.dtadnetwork.com(5)securepubads.g.doubleclick.net(4)googletagmanager.com(3)fundingchoicesmessages.google.com(3)cdnweb.dantri.com.vn(2)

Website Identity

Facebook TikTok Telegram

Sponsored

Last analyzed: 19 Feb 2026 at 15:10

Historical Analysis & Change Tracking