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

chordie.com

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

Export

chordie.com

Sponsored

Hosting Provider

Leaseweb

leaseweb.com

IP Address

95.211.11.6

Server Location

🇳🇱 Amsterdam, The Netherlands

ASN

AS60781

Organization

LeaseWeb Netherlands B.V.

Server

Nginx

CDN

Varnish

Nameservers

ns72.worldnic.com.ns71.worldnic.com.

Performance

Page Speed

1000 KB

55 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Framework

jQuery

Styling

Bootstrap

Infrastructure

Hosting

Leaseweb

CDN

Varnish

Technology Stack

10 Technologies Detected

CSS Frameworks

Analytics

Advertising

Google Ads Google AdSense

Libraries

Fonts

Web Servers

Customer Support

SEO Analysis

D52/100

chordie.comchordie.com

Free Guitar Chords, Tabs, Tablature, Song Library

Title Length49 chars

Recommended: 50-60 chars

Description Length49 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

10 rules

Allows all crawlers

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

139d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Network Solutions L.L.C.

Key Algorithm

RSA (2048 bit)

Signature

SHA-384 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

04.06.2025

Valid Until

05.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

chordie.comwww.chordie.com

SHA-256 Fingerprint

79:F7:62:2A:3D:FD:AD:CC:9B:13:00:C9:7A:4A:1F:AC:B9:FB:58:D9...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

age

693

cache-control

🟡 1800s(public, max-age=1800)

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

9770

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

MX Records (5)

alt1.aspmx.l.google.com

aspmx.l.google.com

aspmx3.googlemail.com

aspmx2.googlemail.com

+1 more

Domain Information

chordie.com

Domain Age

23y 4m

Created

25.10.2002

Expires

25.10.2029

Last Updated

26.08.2024

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Typography & Readability

Roboto + sans-serif

54/100

Readability

/30

32/40

14px · LH 1.43

Hierarchy

/20

21/25

2.57x ratio

WCAG

/25

5/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Roboto

Sans36px

Body Font

sans-serif

Sans14px

Contrast Ratio

Reading Comfort

Single Font Family

left aligned

36px

34px

24px

14px

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

✅ Optimal line spacing: 1.43 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.6x larger than body text.

✅ Good performance: Using 2 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.

GGoogle Fonts

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)d3lcz8vpax4lo2.cloudfront.net(3)cmp.inmobi.com(1)pagead2.googlesyndication.com(1)google-analytics.com(1)

Website Identity

X (Twitter)

Sponsored

Last analyzed: 16 Feb 2026 at 19:22

Historical Analysis & Change Tracking