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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dafont.com

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

Export

dafont.com

Mobile

Sponsored

Hosting Provider

MCPECloud ISP

IP Address

87.98.168.164

Server Location

🇫🇷 Gravelines, France

ASN

AS16276

Organization

MCPECloud ISP

Server

Apache

Nameservers

a.dns.gandi.net.c.dns.gandi.net.b.dns.gandi.net.

Performance

Page Speed

77 KB

27 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

BigCommerce

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Advertising

Google Ads Google AdSense

CSS Frameworks

Tailwind CSS

Payments

PayPal

Web Servers

Apachev2.4.66

SEO Analysis

F32/100

dafont.comdafont.com

DaFont - Download fonts

Archive of freely downloadable fonts. Browse by alphabetical listing, by style, by author or by popularity.

Title Length23 chars

Recommended: 50-60 chars

Description Length107 chars

Recommended: 120-160 chars

Issues (3)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (20/20)
• Missing viewport meta tag - page may not be mobile-friendly

8 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

66 rules

Allows all crawlers

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

280d

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

19.10.2025

Valid Until

19.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.dafont.comdafont.com

SHA-256 Fingerprint

03:7F:E3:D0:0A:10:8B:D7:81:50:8C:F5:AF:79:F7:60:CB:63:1E:9A...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

4838

content-type

text/html

date

Thu, 12 Feb 2026 22:17:11 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

ALT1.ASPMX.L.GOOGLE.com

ALT2.ASPMX.L.GOOGLE.com

ASPMX5.GOOGLEMAIL.com

ASPMX4.GOOGLEMAIL.com

+3 more

Domain Information

dafont.com

Domain Age

25y 4m

Created

15.10.2000

Expires

15.10.2027

Last Updated

07.01.2026

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

Arial

51/100

Readability

/30

10/40

13px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

Single Family

left aligned

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

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

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

7 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)cache.consentframework.com(1)choices.consentframework.com(1)

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Last analyzed: 12 Feb 2026 at 22:17

Historical Analysis & Change Tracking