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

daringfireball.net

https://daringfireball.net· First analyzed 12 Feb 2026· Updated 12 Feb 2026

Export

daringfireball.net

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.4.133

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Nginx

CDN

Nameservers

robin.ns.cloudflare.com.doug.ns.cloudflare.com.

Performance

Page Speed

136 KB

148 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.1

cms

tc-24Custom

Technology Stack

20 Technologies Detected

Advertising

Google Ads LinkedIn Ads Criteo Outbrain

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel

Icon Libraries

Font Awesome Material Icons

Plugins

Libraries

CSS Frameworks

Fonts

Tag Managers

Marketing

Payments

Comments

Web Servers

Security

SEO Analysis

B76/100

daringfireball.netdaringfireball.net

Threads edges out X in daily mobile users, new data shows | TechCrunch

Threads’ daily mobile usage has quietly surpassed X as Meta leans on cross-promotion, creator tools, and fast feature rollouts — even as X faces fresh contro...

Description truncated.

Title Length70 chars

Recommended: 50-60 chars

Description Length164 chars

Recommended: 120-160 chars

Issues (0)

4 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

34 rules

Sitemap reference found

Sponsored

Security Score

45%Poor

Critical / Transactional

HTTPS

No WAF

64d

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

Valid From

18.01.2026

Valid Until

18.04.2026

Subject Alternative Names (2)

techcrunch.comwww.techcrunch.com

SHA-256 Fingerprint

10:DA:3B:F8:AC:AF:6B:A1:92:D4:98:B5:58:C0:45:25:1A:27:D9:46...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

access-control-allow-methods

access-control-allow-origin

https://techcrunch.com

cache-control

🟡 300s(max-age=300, must-revalidate)

content-encoding

⚡ Brotli(br)

content-security-policy

default-src 'self' *.techcrunch.com; frame-ancestors 'self';...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.daringfireball.net

Domain Information

daringfireball.net

Domain Age

23y 11m

Created

18.03.2002

Expires

18.03.2026

Last Updated

15.02.2025

Registrar

pair Networks, Inc. d/b/a pair Domains

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

Data Protection Officer mentioned

Legitimate interest basis mentioned

Typography & Readability

nb_international_proregular

84/100

Readability

/30

40/40

16px · LH 1.40

Hierarchy

/20

21/25

2.5x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

nb_international_proregular

Sans40px

Body Font

nb_international_proregular

Sans16px

Contrast Ratio

Reading Comfort

~56 CPL

Optimal (45–75)

40px

23px

19px

16px

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

✅ Optimal line spacing: 1.40 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.5x 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.

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

GGoogle Fonts Buy on MyFonts

Business & Marketing Stack

8 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Google AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Quantcast ChoiceMid-Market

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(3)snap.licdn.com(2)connect.facebook.net(2)js-na1.hs-scripts.com(1)collector.brandmetrics.com(1)

Website Identity