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

aanda.org

https://aanda.org· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

aanda.org

Sponsored

Hosting Provider

OVHcloud

ovhcloud.com

IP Address

162.19.100.16

Server Location

🇫🇷 Gravelines, France

ASN

AS16276

Organization

OVH

Nameservers

ns.edpsciences.org.ns2.edpsciences.org.

Performance

Page Speed

1.6 MB

69 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

OVHcloud

Technology Stack

7 Technologies Detected

Libraries

Analytics

Meta Frameworks

CSS Frameworks

Fonts

SEO Analysis

C62/100

aanda.orgaanda.org

Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

Title Length30 chars

Recommended: 50-60 chars

Description Length126 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (15/24)

5 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

7 URLs

robots.txt

25 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

51d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

12.01.2026

Valid Until

12.04.2026

Subject Alternative Names (4)

aanda.orgaandajournal.comwww.aanda.orgwww.aandajournal.com

SHA-256 Fingerprint

A5:E1:67:CB:0D:E0:42:F1:B7:96:33:D3:E1:2A:17:3E:D6:F3:23:AB...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(max-age=86400, no-cache)

content-encoding

📦 Gzip(gzip)

content-length

15058

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 17:41:05 GMT

p3p

CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

aanda-org.mail.protection.outlook.com

Domain Information

aanda.org

Domain Age

26y 10m

Created

07.04.1999

Expires

07.04.2032

Last Updated

03.04.2023

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Typography & Readability

Calibri

61/100

Readability

/30

20/40

13px · LH 1.67

Hierarchy

/20

20/25

1.67x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Calibri

Sans21px

Body Font

Calibri

Sans13px

Contrast Ratio

Reading Comfort

~46 CPL

Optimal (45–75)

21px

14px

18px

17px

13px

❌ Critical: 13px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.67 ratio ensures comfortable reading.

✅ Good hierarchy: Clear distinction between headlines and 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

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(10)googletagmanager.com(3)ajax.googleapis.com(2)google-analytics.com(1)

Website Identity

Facebook LinkedIn Bluesky

Sponsored

Last analyzed: 19 Feb 2026 at 17:41

Historical Analysis & Change Tracking