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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tass.com

https://tass.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

tass.com

$Desktop screenshot of tass.com$

$Mobile screenshot of tass.com$

Mobile

Sponsored

Hosting Provider

Servicepipe LLC

IP Address

91.221.164.6

Server Location

🇷🇺 Moscow, Russia

ASN

AS201706

Organization

Servicepipe LLC

Server

Nginx

Nameservers

ns8-l2.nic.ru.ns1.tass.ru.ns2.tass.ru.ns4-l2.nic.ru.

Performance

Page Speed

697 KB

172 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Servicepipe LLC

Technology Stack

6 Technologies Detected

Frameworks

Libraries

CSS Frameworks

Fonts

Tag Managers

Web Servers

SEO Analysis

D55/100

tass.comtass.com

TASS Russian News Agency

Since 1904 TASS has been Russia’s leading news agency. For more than 113 years, TASS has ceaselessly strived to deliver the latest and most accurate news fro...

Description truncated.

Title Length24 chars

Recommended: 50-60 chars

Description Length175 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (4/4)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

13 URLs

robots.txt

3 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

79d

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

02.04.2025

Valid Until

04.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.tass.comtass.com

SHA-256 Fingerprint

2E:92:ED:04:48:AE:83:3B:C6:2A:EB:85:42:1A:8F:9A:55:BB:A1:2B...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

admin.tass.ru

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 13 Feb 2026 22:34:58 GMT

etag

W/"13c5e-/mbLE5ROPb2BNBqUZBoll/W8EDg"

referrer-policy

origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx-ksmg04.tass.ru

mx-ksmg03.tass.ru

Domain Information

tass.com

Domain Age

32y 5m

Created

17.09.1993

Expires

16.09.2026

Last Updated

15.09.2025

Registrar

Regional Network Information Center, JSC dba RU-CENTER

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Gost + sans-serif

43/100

Readability

/30

17/40

14px · LH 1.15

Hierarchy

/20

18/25

2x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Gost

Sans28px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

28px

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

⚠️ Tight line spacing (1.15). Consider 1.4-1.6 for better readability.

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

✅ 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

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)mc.yandex.ru(2)yastatic.net(2)tns-counter.ru(1)gstatic.com(1)

Website Identity

Sponsored

Last analyzed: 13 Feb 2026 at 22:35

Historical Analysis & Change Tracking