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

coub.com

https://coub.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

coub.com

Mobile

Sponsored

Hosting Provider

JSC Selectel

IP Address

95.213.253.92

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS49505

Server

Nginx

Nameservers

ns-1316.awsdns-36.org.ns-1712.awsdns-22.co.uk.ns-189.awsdns-23.com.ns-762.awsdns-31.net.

Performance

Page Speed

84 KB

38 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

JSC Selectel

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

5 Technologies Detected

Analytics

CSS Frameworks

Tag Managers

Web Servers

SEO Analysis

C64/100

coub.comcoub.com

Random coubs - top random videos feed

Explore a random selection of the top coubs! Create recoubs, repost and share!

Title Length37 chars

Recommended: 50-60 chars

Description Length78 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

13 rules

Sitemap reference found

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

50d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

04.01.2026

Valid Until

04.04.2026

Subject Alternative Names (2)

coub.comwww.coub.com

SHA-256 Fingerprint

DB:D1:12:D8:68:10:F4:60:92:55:D7:37:AC:C0:CD:D6:6A:5E:92:97...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0, private, must-revalidate)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 22:42:22 GMT

referrer-policy

strict-origin-when-cross-origin

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

alt1.aspmx.l.google.com

aspmx2.googlemail.com

aspmx.l.google.com

alt2.aspmx.l.google.com

+3 more

Domain Information

coub.com

Domain Age

23y 4m

Created

19.10.2002

Expires

19.10.2029

Last Updated

29.01.2024

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Helvetica

69/100

Readability

/30

25/40

16px · LH 1.05

Hierarchy

/20

18/25

2.19x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica

Sans35px

Body Font

Helvetica

Sans16px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

35px

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

⚠️ Tight line spacing (1.05). Consider 1.4-1.6 for better readability.

✅ Strong hierarchy: Headlines are 2.2x 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.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

8 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)assets-cdn-s.coub.com(2)mc.yandex.ru(1)

Website Identity

X (Twitter)Discord Telegram

Sponsored

Last analyzed: 12 Feb 2026 at 22:42

Historical Analysis & Change Tracking