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

firstmonday.org

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

Export

firstmonday.org

Mobile

Sponsored

Hosting Provider

Gossamer Threads Inc

IP Address

208.70.244.18

Server Location

🇨🇦 Richmond Hill, Canada

ASN

AS36483

Organization

Gossamer Threads Inc

Server

Apache

Nameservers

uic-dns1.uic.edu.uic-dns2.uic.edu.uic-dns3.uic.edu.

Performance

Page Speed

750 KB

20 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Gossamer Threads Inc

Technology Stack

7 Technologies Detected

Analytics

Libraries

Icon Libraries

Web Servers

SEO Analysis

D58/100

firstmonday.orgfirstmonday.org

First Monday

First Monday is one of the first openly accessible, peer–reviewed journals on the Internet, solely devoted to the Internet.

Title Length12 chars

Recommended: 50-60 chars

Description Length123 chars

Recommended: 120-160 chars

Issues (0)

6 issues found

Upgrade to view details

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

09.02.2026

Valid Until

10.05.2026

Subject Alternative Names (2)

firstmonday.orgwww.firstmonday.org

SHA-256 Fingerprint

A5:5A:2D:81:10:DA:9C:B5:1F:D1:0F:BF:D6:A0:37:32:50:B9:D9:17...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🟡 10s(public, max-age=10, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

4724

content-type

text/html; charset=utf-8

date

Thu, 19 Feb 2026 22:17:20 GMT

etag

4134668703

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

firstmonday.org

Domain Information

firstmonday.org

Domain Age

28y 8m

Created

30.06.1997

Expires

29.06.2027

Last Updated

03.05.2022

Registrar

CSL Computer Service Langenbach GmbH d/b/a joker.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Noto Sans

80/100

Readability

/30

32/40

14px · LH 1.78

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Noto Sans

Sans28px

Body Font

Noto Sans

Sans14px

Contrast Ratio

Reading Comfort

~38 CPL

Needs attention

28px

18px

14px

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.78 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.0x 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

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

firstmonday.org(6)googletagmanager.com(1)

Sponsored

Last analyzed: 19 Feb 2026 at 22:17

Historical Analysis & Change Tracking