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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crisistextline.org

https://crisistextline.org· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

crisistextline.org

Sponsored

Hosting Provider

Squarespace

squarespace.com

IP Address

198.185.159.144

Server Location

🇺🇸 New York, United States

ASN

AS53831

Organization

Squarespace, Inc.

Server

Nginx

CDN

Nameservers

fay.ns.cloudflare.com.fred.ns.cloudflare.com.

Performance

Page Speed

2.2 MB

60 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Headless

⚙️ SSR

Decoupled

API

Data Source

Headless CMS

Strapi

Infrastructure

Hosting

Squarespace

CDN

Detected API Sources

https://giving.classy.org/embe...

Technology Stack

17 Technologies Detected

Plugins

Header Footer Elementor

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Email Marketing

Other

Social

Web Servers

SEO Analysis

A82/100

crisistextline.orgcrisistextline.org

Crisis Text Line | Text HOME to 741741 Free, 24/7 Mental Health Sup...

Text HOME to 741741 for free, 24/7 confidential crisis support in English & Spanish. Suicide hotline for anxiety, depression, bullying.

Title truncated.

Title Length71 chars

Recommended: 50-60 chars

Description Length135 chars

Recommended: 120-160 chars

Issues (0)

3 issues found

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Crawlability

Sitemap

Type: standard

robots.txt

5 rules

Sitemap reference found

Allows all crawlers

Sponsored

Security Score

21%Critical

Interactive

HTTPS

No WAF

48d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

06.01.2026

Valid Until

06.04.2026

Subject Alternative Names (1)

www.crisistextline.org

SHA-256 Fingerprint

56:4F:FC:5F:89:7B:96:C2:96:47:2E:F2:BA:6C:9E:57:9B:5C:3D:71...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 00:04:10 GMT

link

<https://www.crisistextline.org/wp-json/>; rel="https://api....

server

nginx

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (7)

aspmx.l.google.com

aspmx4.googlemail.com

aspmx2.googlemail.com

alt2.aspmx.l.google.com

+3 more

Domain Information

crisistextline.org

Domain Age

14y 1m

Created

21.01.2012

Expires

21.01.2027

Last Updated

27.12.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Public Sans + Poppins

76/100

Readability

/30

40/40

48px · LH 1.50

Hierarchy

/20

15/25

1.17x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

Public Sans

Sans56px

Body Font

Poppins

Sans48px

Contrast Ratio

Reading Comfort

~40 CPL

Needs attention

56px

48px

16px

28px

48px

✅ Excellent readability: 48px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

⚠️ Weak hierarchy: Headlines should be at least 2x body size for clear visual structure.

✅ Good performance: Using 2 font families keeps load times fast.

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

⚠️ Cramped layout: 24 elements lack adequate spacing.

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

5 Tools Detected

Enterprise

Marketing Automation

MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

HotjarMid-Market

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Social Media

AddThisFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

crisistextline.org(7)googletagmanager.com(3)google-analytics.com(1)googleoptimize.com(1)giving.classy.org(1)

Website Identity

Facebook X (Twitter)Instagram LinkedIn TikTok

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Last analyzed: 17 Feb 2026 at 00:04

Historical Analysis & Change Tracking