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

surferseo.com

https://surferseo.com· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

surferseo.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.66.43.146

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ned.ns.cloudflare.com.gail.ns.cloudflare.com.

Performance

Page Speed

895 KB

158 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

17 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Google Ads Twitter Ads LinkedIn Ads

Libraries

Other

UI Components

CSS Frameworks

Tag Managers

Reviews

Payments

CDN

Customer Support

SEO Analysis

B70/100

surferseo.comsurferseo.com

Surfer: SEO Content Optimization Platform

Use Surfer to research, audit, write, optimize and generate SEO optimized articles in 20 minutes. Everything you need to create a comprehensive content strat...

Description truncated.

Title Length41 chars

Recommended: 50-60 chars

Description Length214 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (122/147)

3 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

6 rules

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

85d

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+H3

Valid From

12.02.2026

Valid Until

13.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

surferseo.com*.surferseo.com

SHA-256 Fingerprint

5B:14:D1:5F:26:E4:C2:CA:0C:C3:36:A1:DE:E7:3B:8B:62:1A:91:F6...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

age

3735

alt-svc

h3=":443"; ma=86400

cache-control

🔴 No Cache(no-store)

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cf4ea3caaed3810-FRA

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (5)

alt4.aspmx.l.google.com

alt3.aspmx.l.google.com

aspmx.l.google.com

alt1.aspmx.l.google.com

+1 more

Domain Information

surferseo.com

Domain Age

8y 4m

Created

03.10.2017

Expires

03.10.2026

Last Updated

03.09.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Times New Roman

78/100

Readability

/30

30/40

17px · LH --

Hierarchy

/20

20/25

1.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Serif25px

Body Font

Times New Roman

Serif17px

Contrast Ratio

Reading Comfort

~44 CPL

Needs attention

25px

19px

17px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ 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.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

marketing-assets.surferseo.art(7)snap.licdn.com(2)connect.facebook.net(2)googletagmanager.com(2)assets.surferseo.art(2)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 17 Feb 2026 at 11:24

Historical Analysis & Change Tracking