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

tsu.ru

https://tsu.ru· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

tsu.ru

Sponsored

Hosting Provider

Ddos-guard LTD

IP Address

91.215.43.223

Server Location

🇷🇺 Rostov-on-Don, Russia

ASN

AS57724

Organization

Ddos-guard LTD

Server

ddos-guard

Nameservers

ns2.tsu.ru.ns1.tsu.ru.

Performance

Page Speed

13.9 MB

101 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Ddos-guard LTD

Detected API Sources

https://vk.com/js/api/openapi....

Technology Stack

2 Technologies Detected

Libraries

jQueryv3.6.0

CSS Frameworks

Tailwind CSS

SEO Analysis

B70/100

tsu.rutsu.ru

Основной сайт Томского государственного университета

Первый российский университет на территории Сибири, один из 29 национальных исследовательских университетов, Старейший университет Сибири, входит в ТОП-100 л...

Description truncated.

Title Length52 chars

Recommended: 50-60 chars

Description Length174 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

robots.txt

81 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

275d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.10.2025

Valid Until

22.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

*.tsu.ruautodiscover.tsu.rumail.tsu.ruowa.tsu.rutsu.ru

SHA-256 Fingerprint

C1:1B:12:1E:52:15:58:5A:29:9C:F8:E6:31:B2:E4:B6:03:B1:12:E5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests;

content-type

text/html; charset=UTF-8

date

Thu, 19 Feb 2026 22:38:00 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mx1.tsu.ru

Domain Information

tsu.ru

Domain Age

29y 5m

Created

28.09.1996

Expires

30.09.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Typography & Readability

Proxima Nova

78/100

Readability

/30

40/40

24px · LH 1.42

Hierarchy

/20

25/25

2.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Proxima Nova

Sans55px

Body Font

Proxima Nova

Sans24px

Contrast Ratio

Reading Comfort

~258 CPL

Needs attention

55px

22px

16px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.42 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.3x 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.

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(13)top-fwz1.mail.ru(2)mc.yandex.ru(1)vk.com(1)privacy-cs.mail.ru(1)

Website Identity

YouTube Telegram

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Last analyzed: 19 Feb 2026 at 22:38

Historical Analysis & Change Tracking