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

mapbox.com

https://mapbox.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

mapbox.com

Mobile

Sponsored

Hosting Provider

Fastly, Inc.

IP Address

151.101.192.143

Server Location

🇨🇦 Montreal, Canada

ASN

AS54113

Organization

Fastly, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns-447.awsdns-55.com.ns-553.awsdns-05.net.ns-1401.awsdns-47.org.ns-1742.awsdns-25.co.uk.

Performance

Page Speed

58 KB

57 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Fastly, Inc.

CDN

Cloudflare

Detected API Sources

https://grow.clearbitjs.com/ap...

Technology Stack

13 Technologies Detected

CSS Frameworks

Analytics

Libraries

Other

Other

Icon Libraries

Fonts

Advertising

Other

CDN

Customer Support

SEO Analysis

B76/100

mapbox.commapbox.com

Mapbox | Maps, Navigation, Search, and Data

APIs and SDKs for AI-powered maps, location search, turn-by-turn navigation, and geospatial data in mobile or web apps. Get started for free.

Title Length43 chars

Recommended: 50-60 chars

Description Length141 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (82/82)

2 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

903 URLs

robots.txt

5 rules

Sitemap reference found

Sponsored

Security Score

84%Very Good

Interactive

HTTPS

WAF

330d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

08.12.2025

Valid Until

09.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.mapbox.com

SHA-256 Fingerprint

B1:DC:53:FA:44:9E:46:2F:13:E3:07:BB:1C:01:7F:26:B2:20:9D:13...

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

117021

cf-cache-status

DYNAMIC

cf-ray🇸🇪 Stockholm

9cd68b5bcd82b000-ARN

connection

keep-alive

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (7)

aspmx3.googlemail.com

aspmx5.googlemail.com

aspmx4.googlemail.com

alt2.aspmx.l.google.com

+3 more

Domain Information

mapbox.com

Domain Age

22y 2m

Created

27.11.2003

Expires

27.11.2026

Last Updated

23.10.2025

Registrar

Amazon Registrar, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Cera pro

86/100

Readability

/30

40/40

24px · LH 1.50

Hierarchy

/20

25/25

2.83x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Cera pro

Sans68px

Body Font

Cera pro

Sans24px

Contrast Ratio

Reading Comfort

~37 CPL

Needs attention

68px

32px

24px

✅ Excellent readability: 24px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.8x 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.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

6 Tools Detected

Enterprise

Marketing Automation

MarketoEnterprise

Email marketing and automation platforms

Behavior Analytics

Google AnalyticsFree

Google Tag ManagerFree

User behavior and product analytics

Advertising

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

A/B Testing & Optimization

VWO (Visual Website Optimizer)Mid-Market

Experimentation and conversion optimization

Sponsored

Scripts & Styles

24 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.prod.website-files.com(5)cdn.cookielaw.org(2)googletagmanager.com(2)static-assets.mapbox.com(2)cdn.jsdelivr.net(2)

Website Identity

X (Twitter)Instagram LinkedIn YouTube GitHub Discord Bluesky

Sponsored

Last analyzed: 13 Feb 2026 at 18:56

Historical Analysis & Change Tracking