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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dreamstime.com

https://dreamstime.com· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

dreamstime.com

Mobile

Sponsored

Hosting Provider

IBM Cloud (SoftLayer)

ibm.com/cloud

IP Address

158.176.70.101

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS36351

Organization

SoftLayer Technologies, Inc

Nameservers

ns-294.awsdns-36.com.ns-996.awsdns-60.net.ns-1291.awsdns-33.org.ns-1996.awsdns-57.co.uk.

Performance

Page Speed

275 KB

13 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

IBM Cloud (SoftLayer)

Technology Stack

1 Technologies Detected

Fonts

Google Fonts

SEO Analysis

F35/100

dreamstime.comdreamstime.com

Access to this page has been denied

px-captcha

Title Length35 chars

Recommended: 50-60 chars

Description Length10 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag - every page should have one H1

6 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

57 rules

Sitemap reference found

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

65d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.01.2026

Valid Until

18.04.2026

Subject Alternative Names (1)

*.dreamstime.com

SHA-256 Fingerprint

20:42:66:5A:45:BA:62:E2:87:55:46:18:A5:D6:17:0F:FB:73:F3:BE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000

content-encoding

⚡ Brotli(br)

content-length

1822

content-type

text/html

date

Thu, 12 Feb 2026 12:56:20 GMT

link

<https://thumbs.dreamstime.com>; rel=preconnect, <https://fr...

Good Warning Issue

Email Infrastructure

iCloud Mail

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail1.dreamstime.com

Domain Information

dreamstime.com

Domain Age

25y 8m

Created

11.06.2000

Expires

11.06.2032

Last Updated

30.04.2025

Registrar

GoDaddy.com, LLC

DNSSEC

Not Enabled

Typography & Readability

Times New Roman

64/100

Readability

/30

30/40

16px · LH --

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

1 font

Heading Font

Times New Roman

Body Font

Times New Roman

Serif16px

Contrast Ratio

Reading Comfort

Single Family

center aligned

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

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

Buy on MyFonts

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)client.px-cloud.net(1)dreamstime.com(1)

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Last analyzed: 12 Feb 2026 at 12:56

Historical Analysis & Change Tracking