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

uptodate.com

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

Export

uptodate.com

Mobile

Sponsored

Hosting Provider

AT&T Services, Inc

IP Address

12.130.132.46

Server Location

🇺🇸 New York, United States

ASN

AS7018

Organization

AT&T Services, Inc

Nameservers

ns-west.cerf.net.ns-east.cerf.net.cbru.br.ns.els-gms.att.net.cmtu.mt.ns.els-gms.att.net.

Performance

Page Speed

3.7 MB

43 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

4 Technologies Detected

CSS Frameworks

Icon Libraries

Analytics

Tag Managers

SEO Analysis

D41/100

uptodate.comuptodate.com

Sign in - UpToDate

No description available for this page.

Title Length18 chars

Recommended: 50-60 chars

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description - important for click-through rates
• Missing H1 tag - every page should have one H1

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1 URLs

robots.txt

120 rules

Sponsored

Security Score

71%Good

Interactive

HTTPS

No WAF

208d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GoDaddy.com, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

09.09.2025

Valid Until

09.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

vid.uptodate.comwww.patients.uptodate.comwww2.uptodate.comshl.uptodate.cngo.uptodate.comshr.uptodate.cnsh.uptodate.cnpda.uptodate.com+12 more

SHA-256 Fingerprint

FD:31:23:37:0C:12:7B:95:C8:F8:D1:14:1F:90:39:19:67:57:6F:36...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

date

Fri, 13 Feb 2026 08:57:31 GMT

strict-transport-security

max-age=31536000;

x-ua-compatible

IE=Edge

content-security-policy-report-only

default-src https: data: https://www.uptodate.com https://ww...

content-security-policy

frame-ancestors *;

x-content-type-options

nosniff

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (3)

mx2.wolterskluwer.iphmx.com

wolterskluwer.mail.protection.outlook.com

mx1.wolterskluwer.iphmx.com

Domain Information

uptodate.com

Domain Age

27y 6m

Created

30.07.1998

Expires

29.07.2031

Last Updated

18.11.2025

Registrar

GoDaddy Corporate Domains, LLC

DNSSEC

Not Enabled

Privacy & Compliance

OneTrust

Cookie Consent Banner

OneTrust

GDPR Indicators

Cookie consent banner detected

CMP: OneTrust

Data Protection Officer mentioned

Typography & Readability

Helvetica Neue

38/100

Readability

/30

32/40

14px · LH 1.50

Hierarchy

/20

8/25

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Helvetica Neue

Sans

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

~49 CPL

Optimal (45–75)

16px

20px

14px

Minor Second

Scale

⚠️ Small text: 14px may be hard to read on mobile. Consider 16px+.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Good performance: Using 1 font families keeps load times fast.

✅ Consistent design: Single font family with weight variations is a modern best practice.

⚠️ Risky: Text appears on background images without overlay protection.

✅ Optimal line length: ~49 characters per line is comfortable to read.

Buy on MyFonts

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(4)googletagmanager.com(2)cdn.cookielaw.org(2)gstatic.com(1)google.com(1)

Website Identity

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 13 Feb 2026 at 08:57

Historical Analysis & Change Tracking