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

drweb.com

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

Export

drweb.com

Mobile

Sponsored

Hosting Provider

OOO Doktor Veb

IP Address

178.248.233.94

Server Location

🇷🇺 Moscow, Russia

ASN

AS51115

Organization

OOO Doktor Veb

Server

QRATOR

Nameservers

rns01.drweb.com.rns02.drweb.com.rns03.drweb.com.

Performance

Page Speed

21 requests

Image Optimization

WebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

OOO Doktor Veb

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

Analytics

Frameworks

CSS Frameworks

Tag Managers

SEO Analysis

D52/100

drweb.comdrweb.com

Dr.Web Download antivirus for PC / Mac / Android

Doctor Web is a Russian IT-security solutions vendor developing Dr.Web anti-virus for businesses and personal use, as well as anti-virus as a service since 1...

Description truncated.

Title Length48 chars

Recommended: 50-60 chars

Description Length161 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (7/7)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

497 URLs

robots.txt

55 rules

Sitemap reference found

Sponsored

Security Score

65%Fair

Critical / Transactional

HTTPS

No WAF

373d

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/1.1

Valid From

27.01.2026

Valid Until

28.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.drweb.comdrweb.com

SHA-256 Fingerprint

A7:BF:1F:A0:14:CD:6E:6D:3A:6C:0F:75:DF:60:3E:DD:6A:60:35:9B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

server

QRATOR

date

Thu, 19 Feb 2026 23:45:47 GMT

content-type

text/html; charset=utf-8

content-length

21325

connection

keep-alive

timeout=15

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

relay2.drweb.com

relay3.drweb.com

Domain Information

drweb.com

Domain Age

30y 5m

Created

28.09.1995

Expires

27.09.2026

Last Updated

15.02.2026

Registrar

OnlineNIC, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

serif

80/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

serif

Serif32px

Body Font

serif

Serif16px

Contrast Ratio

Reading Comfort

~187 CPL

Needs attention

32px

24px

19px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ 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.

❌ Very long lines: ~187 chars/line causes eye strain. Use max-width: 65ch.

✅ Clean layout: Consistent left alignment throughout.

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

st.drweb.com(6)googletagmanager.com(2)mc.yandex.ru(1)google-analytics.com(1)

Website Identity

Facebook Instagram

Sponsored

Last analyzed: 19 Feb 2026 at 23:46

Historical Analysis & Change Tracking