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

backblaze.com

https://backblaze.com· First analyzed 14 Feb 2026· Updated 14 Feb 2026

Export

backblaze.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.17.6.3

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

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

Performance

Page Speed

80 KB

62 requests

Image Optimization

Lazy LoadWebPAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

HubSpot CMS

Technology Stack

10 Technologies Detected

Analytics

Libraries

Other

CSS Frameworks

Fonts

Tag Managers

Marketing

Other

CDN

SEO Analysis

A84/100

backblaze.combackblaze.com

The Leading Open Cloud Storage Platform - Backblaze

Backblaze is a pioneer in robust, scalable low cost cloud backup and storage services. Enterprise hot storage, low cost backup and archive, and more.

Title Length51 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (0)

1 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

13 rules

Sitemap reference found

Sponsored

Security Score

71%Good

Interactive

HTTPS

WAF

58d

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

age

517217

alt-svc

h3=":443"; ma=86400

cache-control

🟡 4 Hours(max-age=14400)

cf-apo-via

tcache

cf-cache-status

HIT

cf-ray🇩🇪 Frankfurt

9cdb02eadf5b2580-FRA

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (2)

mxa-00807701.gslb.pphosted.com

mxb-00807701.gslb.pphosted.com

Domain Information

backblaze.com

Domain Age

18y 10m

Created

02.04.2007

Expires

02.04.2026

Last Updated

05.06.2024

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

84/100

Readability

/30

40/40

16px · LH 1.75

Hierarchy

/20

21/25

4.69x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Spacegrotesk

Sans75px

Body Font

Dmsans

Sans16px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

75px

20px

32px

16px

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

✅ Optimal line spacing: 1.75 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 4.7x 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

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

x.clearbitjs.com(2)googletagmanager.com(2)ajax.googleapis.com(2)cdnjs.cloudflare.com(2)cdn.prod.website-files.com(2)

Website Identity

backblaze.com

18 years old

Cloudflare, Inc.

Social Profiles

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 14 Feb 2026 at 07:57

Historical Analysis & Change Tracking