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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issn.org

https://issn.org· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

issn.org

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

46.105.152.159

Server Location

🇧🇪 Zaventem, Belgium

ASN

AS16276

Organization

support@myown.be

Server

Apache

Nameservers

ns-36-b.gandi.net.ns-117-a.gandi.net.ns-21-c.gandi.net.

Performance

Page Speed

574 KB

90 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.1

cms

ISSNv1.0

by SDC

View Theme

Technology Stack

24 Technologies Detected

Plugins

Advance Wp Query Search Filter Ajax Wp Query Search Filter

Mailjet For Wordpress

Newsletter Easy Fancybox Wp Google Maps

Gravity Forms

Gravity Forms No Captcha Recaptcha

Libraries

Analytics

UI Components

CSS Frameworks

Tag Managers

Web Servers

Security

SEO Analysis

F32/100

issn.orgissn.org

ISSN |

Title Length6 chars

Recommended: 50-60 chars

Description Length1 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (6/10)

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

361d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Gandi SAS

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

08.02.2026

Valid Until

12.02.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.issn.orgissn.org

SHA-256 Fingerprint

62:A6:D0:8A:4D:36:5A:7A:3E:B9:24:DE:2B:4B:B6:0B:9D:11:5A:F4...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 3s(max-age=3, must-revalidate)

connection

Upgrade, Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

20271

content-type

text/html; charset=UTF-8

date

Mon, 16 Feb 2026 12:40:59 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

issn.in.tmes.trendmicro.eu

webmail2.issn.org

webmail.issn.org

Domain Information

issn.org

Domain Age

29y 11m

Created

26.03.1996

Expires

27.03.2026

Last Updated

12.02.2026

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Typography & Readability

Times New Roman + Arial

55/100

Readability

/30

20/40

12px · LH 1.40

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Times New Roman

Serif

Body Font

Arial

Sans12px

Contrast Ratio

Reading Comfort

~36 CPL

Needs attention

16px

25px

16px

12px

Major Second

Scale

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 26 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

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

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

issn.org(15)gstatic.com(2)googletagmanager.com(2)code.jquery.com(1)

Website Identity

issn.org

29 years old

Gandi SAS

Social Profiles

Facebook X (Twitter)

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Last analyzed: 16 Feb 2026 at 12:41

Historical Analysis & Change Tracking