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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reedsy.com

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

Export

reedsy.com

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

34.107.224.207

Server Location

🇺🇸 Kansas City, United States

ASN

AS396982

Organization

Google Cloud

Server

Nginx

Nameservers

ns-178-b.gandi.net.ns-2-a.gandi.net.ns-218-c.gandi.net.

Performance

Page Speed

131 KB

87 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Google Cloud Platform

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Advertising

Twitter Ads TikTok Pixel Microsoft Advertising

Frameworks

CSS Frameworks

Fonts

Tag Managers

Customer Support

Reviews

Web Servers

SEO Analysis

B70/100

reedsy.comreedsy.com

Reedsy: Find the perfect editor, designer or marketer | Reedsy

Reedsy allows authors to find and work with the best publishing professionals: from developmental editors to book cover designers, publicists and translators.

Title Length62 chars

Recommended: 50-60 chars

Description Length158 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (41/68)

3 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Sponsored

Security Score

61%Fair

Interactive

HTTPS

No WAF

206d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

10.08.2025

Valid Until

10.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

reedsy.com*.reedsy.com

SHA-256 Fingerprint

5F:0A:5A:10:8E:EA:AE:41:13:8B:03:8D:76:D0:01:F6:4D:88:D9:78...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000,h3-29=":443"; ma=2592000

cache-control

🟡 0s(max-age=0, private, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Mon, 16 Feb 2026 14:09:26 GMT

etag

W/"e7f093408e303651996c1c72c2fa8161"

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

ASPMX4.GOOGLEMAIL.com

ALT2.ASPMX.L.GOOGLE.com

ASPMX5.GOOGLEMAIL.com

ALT1.ASPMX.L.GOOGLE.com

+3 more

Domain Information

reedsy.com

Domain Age

12y 2m

Created

23.11.2013

Expires

23.11.2030

Last Updated

22.09.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Times New Roman + Georgia

75/100

Readability

/30

32/40

24px · LH 1.25

Hierarchy

/20

25/25

2x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

10/20

3 fonts

Heading Font

Times New Roman

Serif48px

Body Font

Georgia

Serif24px

Contrast Ratio

Reading Comfort

~35 CPL

Needs attention

48px

32px

24px

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

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

✅ Protected text on images: Using gradient for readability.

⚠️ Cramped layout: 53 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

11 Tools Detected

Enterprise

Customer Support

CrispSMB

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Twitter/X AdsMid-Market

Pinterest AdsMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Reddit PixelMid-Market

Quora PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

analytics.tiktok.com(3)cdn.ravm.tv(3)s.pinimg.com(2)connect.facebook.net(2)parrot.reedsy.com(2)

Website Identity

Facebook X (Twitter)Instagram LinkedIn

Sponsored

Last analyzed: 16 Feb 2026 at 14:09

Historical Analysis & Change Tracking