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

vocaroo.com

https://vocaroo.com· First analyzed 19 Feb 2026· Updated 19 Feb 2026

Export

vocaroo.com

Mobile

Sponsored

Hosting Provider

Hetzner

hetzner.com

IP Address

78.47.172.230

Server Location

🇩🇪 Nuremberg, Germany

ASN

AS24940

Organization

Hetzner Online GmbH

Server

Nginx

Nameservers

ns2.heartinternet.uk.ns.heartinternet.uk.

Performance

Page Speed

7 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hetzner

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

2 Technologies Detected

Web Servers

Nginx

CSS Frameworks

Normalize.css

SEO Analysis

F35/100

vocaroo.comvocaroo.com

Vocaroo | Online voice recorder

Vocaroo is a quick and easy way to share voice messages over the interwebs.

Title Length31 chars

Recommended: 50-60 chars

Description Length75 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag - every page should have one H1
• Many images missing alt text (3/3)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

15 rules

Allows all crawlers

Sponsored

Security Score

71%Good

Static / Informational

HTTPS

No WAF

78d

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/1.1

Valid From

08.02.2026

Valid Until

09.05.2026

Subject Alternative Names (1)

vocaroo.com

SHA-256 Fingerprint

09:67:65:CC:54:AA:DB:B7:D2:8A:9C:BB:8E:2C:F8:15:9F:CD:A2:56...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Thu, 19 Feb 2026 20:30:11 GMT

etag

W/"67e7a6fb-68a"

last-modified

Sat, 29 Mar 2025 07:53:31 GMT

Good Warning Issue

Email Infrastructure

Fastmail

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

in1-smtp.messagingengine.com

in2-smtp.messagingengine.com

Domain Information

vocaroo.com

Domain Age

18y 4m

Created

03.10.2007

Expires

03.10.2026

Last Updated

09.09.2024

Registrar

Mesh Digital Limited

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Arial

43/100

Readability

/30

5/40

13px · LH 1.15

Hierarchy

/20

8/25

WCAG

/25

15/15

Contrast: undefined

Performance

/25

20/20

System fonts

Heading Font

Arial

Body Font

Arial

Sans13px

Contrast Ratio

Reading Comfort

Single Family

left aligned

❌ Critical: 13px body text is too small. Increase to at least 14px.

⚠️ Tight line spacing (1.15). Consider 1.4-1.6 for better readability.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

⚠️ Inconsistent alignment: Mix of left/center/right creates visual noise.

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.vocaroo.com(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 19 Feb 2026 at 20:30

Historical Analysis & Change Tracking