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

techpowerup.com

https://techpowerup.com· First analyzed 13 Feb 2026· Updated 13 Feb 2026

Export

techpowerup.com

Mobile

Sponsored

Hosting Provider

InterServer

interserver.net

IP Address

216.158.237.94

Server Location

🇺🇸 Secaucus, United States

ASN

AS19318

Organization

Interserver, Inc

Server

Nginx

Nameservers

dns2.registrar-servers.com.dns1.registrar-servers.com.

Performance

Page Speed

236 KB

52 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

InterServer

Technology Stack

7 Technologies Detected

Libraries

Meta Frameworks

UI Components

CSS Frameworks

Web Servers

Analytics

SEO Analysis

D50/100

techpowerup.comtechpowerup.com

TechPowerUp

Leading tech publication, with fast news, thorough reviews, and a strong community.

Title Length11 chars

Recommended: 50-60 chars

Description Length83 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (192/194)

7 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

50 rules

Sponsored

Security Score

51%Poor

Interactive

HTTPS

No WAF

75d

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

30.01.2026

Valid Until

30.04.2026

Subject Alternative Names (4)

forums.techpowerup.comtechpowerup.comtpu.mewww.techpowerup.com

SHA-256 Fingerprint

74:2B:00:4E:1D:87:B2:BC:EE:70:DD:60:67:F8:43:94:8E:E4:34:78...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

frame-ancestors 'self'

content-type

text/html; charset=UTF-8

date

Fri, 13 Feb 2026 13:45:31 GMT

server

nginx

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

techpowerup-com.mail.protection.outlook.com

Domain Information

techpowerup.com

Domain Age

21y 9m

Created

14.05.2004

Expires

14.05.2034

Last Updated

14.04.2025

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Data Protection Officer mentioned

Typography & Readability

TPU-Title + Helvetica Neue

58/100

Readability

/30

22/40

14px · LH --

Hierarchy

/20

13/25

1.57x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

13/20

2 fonts

Heading Font

TPU-Title

Serif22px

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

Reading Comfort

Serif Headlines + Sans Body

left aligned

22px

15px

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

✅ Good hierarchy: Clear distinction between headlines and body text.

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

⚠️ Cramped layout: 79 elements lack adequate spacing.

✅ Clean layout: Consistent left alignment throughout.

Buy on MyFonts

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Matomo (Piwik)Mid-Market

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

13 Resources

Scripts

Styles

Async

Defer

Top Script Sources

tpucdn.com(7)

Website Identity

Facebook X (Twitter)YouTube Bluesky

Sponsored

Last analyzed: 13 Feb 2026 at 13:45

Historical Analysis & Change Tracking