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

backblazeb2.com

https://backblazeb2.com· First analyzed 16 Feb 2026· Updated 16 Feb 2026

Export

backblazeb2.com

Sponsored

Hosting Provider

Backblaze Inc

IP Address

149.137.142.15

Server Location

🇺🇸 Palo Alto, United States

ASN

AS40401

Organization

Backblaze Inc

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dolly.ns.cloudflare.com.kirk.ns.cloudflare.com.

Performance

Page Speed

80 KB

73 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Technology Stack

11 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Fonts

Tag Managers

Marketing

Other

CDN

Security

SEO Analysis

A84/100

backblazeb2.combackblazeb2.com

Low Cost, High Performance S3 Compatible Object Storage

Backblaze B2 provides unlimited data storage in the cloud at 1/5th the cost of Amazon S3, Microsoft Azure, and Google Cloud.

Title Length55 chars

Recommended: 50-60 chars

Description Length124 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

13 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

55d

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

13.01.2026

Valid Until

13.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (4)

backblaze.com*.backblaze.comsecure.backblaze.com*.secure.backblaze.com

SHA-256 Fingerprint

88:7D:88:62:7E:B5:BA:44:50:A0:FC:33:41:34:55:2D:B5:FF:14:7C...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-apo-via

origin,miss

cf-cache-status

BYPASS

cf-ray🇩🇪 Frankfurt

9cefd722af05dbe4-FRA

content-encoding

⚡ Brotli(br)

content-security-policy

frame-ancestors 'self' https://secure.backblaze.com

Good Warning Issue

Email Infrastructure

Forward Email

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mx2.forwardemail.net

mx1.forwardemail.net

Domain Information

backblazeb2.com

Domain Age

9y 7m

Created

13.07.2016

Expires

13.07.2026

Last Updated

13.06.2025

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Typography & Readability

Spacegrotesk + Dmsans

64/100

Readability

/30

20/40

12px · LH 1.50

Hierarchy

/20

21/25

4x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Spacegrotesk

Sans48px

Body Font

Dmsans

Sans12px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

48px

20px

12px

❌ Critical: 12px body text is too small. Increase to at least 14px.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.0x larger than body text.

✅ Good performance: Using 2 font families keeps load times fast.

✅ Smart font loading: Using font-display: swap prevents invisible text during load.

✅ Protected text on images: Using gradient for readability.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Lead Generation

ClearbitEnterprise

Popups, forms, and lead capture tools

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

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

x.clearbitjs.com(2)googletagmanager.com(2)gstatic.com(2)ajax.googleapis.com(2)google.com(2)

Website Identity

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 16 Feb 2026 at 20:37

Historical Analysis & Change Tracking