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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doaj.org

https://doaj.org· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

doaj.org

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.13.243

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

lana.ns.cloudflare.com.darwin.ns.cloudflare.com.

Performance

Page Speed

129 KB

18 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Libraries

CSS Frameworks

Icon Libraries

Fonts

Analytics

CDN

SEO Analysis

C64/100

doaj.orgdoaj.org

Directory of Open Access Journals – DOAJ

DOAJ is a unique and extensive index of diverse open access journals from around the world, driven by a growing community, committed to ensuring quality cont...

Description truncated.

Title Length40 chars

Recommended: 50-60 chars

Description Length201 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (1/1)

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

49,001 URLs

robots.txt

30 rules

Sitemap reference found

Sponsored

Security Score

26%Critical

Interactive

HTTPS

WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.12.2025

Valid Until

21.03.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

doaj.org*.doaj.org

SHA-256 Fingerprint

CA:F2:26:FD:93:9E:DA:2B:00:8A:EF:CC:40:6B:F7:0B:9D:58:FA:2D...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

cf-cache-status

DYNAMIC

cf-ray🇩🇪 Frankfurt

9ccd73ef1d2d8b8e-FRA

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

date

Thu, 12 Feb 2026 16:27:21 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (7)

alt1.aspmx.l.google.com

smtp1.speednames.com

alt2.aspmx.l.google.com

aspmx3.googlemail.com

+3 more

Domain Information

doaj.org

Domain Age

23 years

Created

05.02.2003

Expires

05.02.2027

Last Updated

13.12.2025

Registrar

Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Typography & Readability

Spectral + sans-serif

53/100

Readability

/30

25/40

18px · LH 1.00

Hierarchy

/20

25/25

2.03x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Spectral

Serif36px

Body Font

sans-serif

Sans18px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

36px

32px

23px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

⚠️ Tight line spacing (1.00). Consider 1.4-1.6 for better readability.

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

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

⚠️ Risky: Text appears on background images without overlay protection.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

PlausibleSMB

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)plausible.io(1)static.cloudflareinsights.com(1)

Website Identity

Facebook Instagram LinkedIn GitHub Bluesky

Sponsored

Last analyzed: 12 Feb 2026 at 16:27

Historical Analysis & Change Tracking