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

pv-magazine-usa.com

https://pv-magazine-usa.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

Export

pv-magazine-usa.com

Mobile

Sponsored

Hosting Provider

WP Engine

wpengine.com

IP Address

141.193.213.21

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Austin, United States

ASN

AS209242

Organization

WPEngine, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ns34.worldnic.com.ns33.worldnic.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

670 ms10%

Speed Index

871 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5 MB

216 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.6.5

cms

pvmagazineCustom

Technology Stack

26 Technologies Detected

Plugins

Upme All In One Upme Pv Magazine Installer Showcase

Wordpress Popular Posts

Easy Fancybox

TablePress

Tablepress Responsive Tables

Libraries

CSS Frameworks

Icon Libraries

Font Awesome Material Icons

Analytics

UI Components

Other

Advertising

CDN

Customer Support

SEO Analysis

B71/100

Meta Tags8/15

Content11/12

Headings3/8

Technical23/25

E-E-A-T3/7

Images3/7

Links2/5

URL5/5

Social5/5

Freshness2/4

Mobile3/4

Indexability3/3

pv-magazine-usa.compv-magazine-usa.com

pv magazine USA – pv magazine USA, the leading solar and energy sto...

pv magazine USA, the leading solar and energy storage trade media platform. Industry news covering market trends, technological advancements, expert commenta...

Title truncated. Description truncated.

Title Length188 chars

Recommended: 50-60 chars (~1154px / 580px)

Description Length170 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (188 chars, ~1154px). Will be truncated in search results.
• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (14/19) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

6 rules

Sitemap reference found

Local SEO

Local Search Readiness

7/100

Poor

2 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D44/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

2/25

Citation

16/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

nav

Text ratio:7%

Words:3,269

Token eff.:Good

Sections/1K:6.7

Depth:1/5

Structured Data

Microdata

Person×1.3microdata

Citation Readiness

Opening Summary19w

Descriptive Headingsavg 9.1w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

AI readiness recommendation preview...

Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

62/100

Passed

Critical

Warnings

Images & Alt Text

10/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

11/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

10/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

9/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

38/100

512 mg

CO₂e / view

5.0 MB

Page Weight

15%

Cleaner Than

New Visitor

585 mg

Returning (cached)

293 mg

Annual (10K/mo)

61.4 kg

Emission Segments

Data Center

25 mg

Network

151 mg

Device

336 mg

Resource Breakdown

JavaScript

559.5 KB

Images

295.2 KB

CSS

3.7 MB

HTML

35.8 KB

Other

413.8 KB

Green Hosting Verified

WP Engine

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

36%Critical

Interactive

HTTPS

WAF

82d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.04.2026

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

pv-magazine-usa.com

SHA-256 Fingerprint

57:09:4C:7F:CF:8B:DA:03:E5:C9:E9:49:29:16:27:85:2B:D3:A0:22...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cache-control

🟡 600s(max-age=600, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray🇮🇹 Milan

9f250779edaf6cbb-MXP

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

pv-magazine-usa.com

Domain Age

11 years

Created

27.04.2015

Expires

27.04.2027

Last Updated

26.02.2026

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

Data Protection Officer mentioned

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

71/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Droid Serif

WCAG Partial

46/100

Readability

/30

17/30

14px · LH 1.37

Hierarchy

/20

8/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

7/25

3 fonts · 7 req

Heading Font

Droid Serif

Serif

Body Font

Droid Serif

Serif14px

Contrast Ratio

1:1

7 issues

Reading Comfort

~41 CPL

Narrow lines

35px

18px

16px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.37). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 22/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

Buy on MyFontsFluid Type (rem)Flesch 22

Color Palette

10 unique colors

12.56:1 AAA Light

#f9f9f9

Background· 26.2%

#2f3031

Other· 13.3%

#11679c

Primary· 13.4%

#8798a1

Secondary· 10.5%

#4c657b

Secondary· 7.9%

#e3e9ec

Secondary· 6.2%

#b9c9cf

Secondary· 5.8%

#143a5a

Accent· 5.3%

Business & Marketing Stack

3 Tools Detected

Enterprise

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Twitter/X WidgetsFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pv-magazine-usa.com(16)googletagservices.com(1)code.jquery.com(1)securepubads.g.doubleclick.net(1)stats.wp.com(1)

Website Identity

pv-magazine-usa.com

11 years old

Location detected: 🇺🇸 United Statesvia ip

Network Solutions, LLCen-US

Social Profiles

Facebook X (Twitter)LinkedIn

Sponsored

Last analyzed: 26 Apr 2026 at 10:51

Historical Analysis & Change Tracking