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

payu.com

https://payu.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

Export

payu.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.174.113.45

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

Apache

CDN

CloudFront

Nameservers

ns-867.awsdns-44.net.ns-1065.awsdns-05.org.ns-1641.awsdns-13.co.uk.ns-264.awsdns-33.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

549 ms10%

Speed Index

714 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3 MB

85 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.0.11

cms

global-websiteCustom

Technology Stack

11 Technologies Detected

Plugins

Analytics

Libraries

CSS Frameworks

Fonts

Tag Managers

Advertising

Web Servers

SEO Analysis

A82/100

Meta Tags14/15

Content11/12

Headings8/8

Technical21/21

E-E-A-T2/7

Images4/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile4/4

Indexability3/3

payu.compayu.com

Financial Services for Emerging Markets | PayU Global

PayU enables local and cross-border payments and innovative financial services across 50+ emerging markets.

Title Length53 chars

Recommended: 50-60 chars (~319px / 580px)

Description Length107 chars

Recommended: 120-160 chars

Issues (0)

5 issues found

Upgrade to view details

Local SEO

Local Search Readiness

19/100

Poor

5 12

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

Sponsored

AI & LLM Readiness

D58/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

8/25

Citation

17/25

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

navheader/footer

Text ratio:8%

Words:1,342

Token eff.:Optimal

Sections/1K:12.7

Depth:2/5

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary29w

Descriptive Headingsavg 5.2w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (6)

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.

73/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

20/20

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

Forms & Inputs

15/15

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

11/15

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

ARIA & Roles

2/15

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

2 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.

39/100

313 mg

CO₂e / view

3.0 MB

Page Weight

30%

Cleaner Than

New Visitor

358 mg

Returning (cached)

179 mg

Annual (10K/mo)

37.5 kg

Emission Segments

Data Center

15 mg

Network

92 mg

Device

206 mg

Resource Breakdown

JavaScript

190.5 KB

Images

775.1 KB

CSS

164.7 KB

HTML

17.1 KB

Other

1.9 MB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

56%Poor

Interactive

HTTPS

No WAF

158d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.09.2025

Valid Until

01.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.payu.compayu.com

SHA-256 Fingerprint

6A:06:F4:B0:0A:4B:C0:72:7D:C5:82:28:8F:80:B7:90:AD:A9:D5:98...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-length

17229

content-security-policy-report-only

default-src https: 'unsafe-inline' data:

content-type

text/html; charset=UTF-8

date

Sun, 26 Apr 2026 09:20:42 GMT

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

payu-com.mail.protection.outlook.com

Domain Information

payu.com

Domain Age

23y 10m

Created

03.07.2002

Expires

03.07.2026

Last Updated

29.06.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

CookieLaw

Cookie Consent Banner

CookieLaw

GDPR Indicators

Cookie consent banner detected

CMP: CookieLaw

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.

73/100

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=1.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

AmpleSoftPro-Medium + Open Sans

WCAG Partial

63/100

Readability

/30

20/30

18px · LH 1.50

Hierarchy

/20

17/20

3.22x ratio · ✓ H1→H6

WCAG

/25

14/25

4.48:1 min contrast

Performance

/25

12/25

4 fonts · 4 req

Heading Font

AmpleSoftPro-Medium

Sans58px

Body Font

Open Sans

Sans18px

Contrast Ratio

4.48:1

29 issues

Reading Comfort

~34 CPL

Narrow lines

58px

42px

22px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 13/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 29 elements below WCAG AA threshold (min 4.5:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

Buy on MyFontsFlesch 13

Color Palette

12 unique colors

Light

#ffffff

Background· 42.8%

#a8b7b8

Secondary· 8.3%

#67857e

Secondary· 6.6%

#2b563f

Secondary· 6.4%

#347942

Secondary· 6.2%

#0e271d

Primary· 5.8%

#88cb9c

Secondary· 4.8%

#c5f6d6

Accent· 4.6%

Business & Marketing Stack

6 Tools Detected

Enterprise

CRM Systems

SalesforceEnterprise

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

OneTrustEnterprise

Cookie consent and privacy compliance tools

Sponsored

Scripts & Styles

25 Resources

Scripts

Styles

Async

Defer

Top Script Sources

corporate.payu.com(5)googletagmanager.com(4)pi.pardot.com(2)snap.licdn.com(2)connect.facebook.net(2)

Website Identity

PayU

Organization

PayU enables local and cross-border payments and innovative financial services across 50+ emerging markets.

corporate.payu.com/

23 years old

Location detected: 🇫🇮 Finlandvia ip

CSC Corporate Domains, Inc.📧 Microsoft 365en

Social Profiles

Sponsored

Last analyzed: 26 Apr 2026 at 09:20

Historical Analysis & Change Tracking