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

upd.edu.ph

https://upd.edu.ph· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

upd.edu.ph

Mobile

Sponsored

Hosting Provider

UP Diliman Network, University of the Philippines Diliman

IP Address

202.92.131.119

Site Location

🇵🇭 Philippinesvia phone

Server Location

🇵🇭 Quezon City, Philippines

ASN

AS23862

Organization

UP Diliman Network, University of the Philippines Diliman

Server

Nginx

Nameservers

ns01.upd.edu.ph.ns02.upd.edu.ph.ns03.upd.edu.ph.

Performance

Core Web Vitals

Weight

First Contentful Paint

3.3 s10%

Speed Index

4.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

8.6 MB

98 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

UP Dilman Information Officev1.0.7Custom

by Author URI:

View Theme

Technology Stack

23 Technologies Detected

Plugins

Embedpress Social Icons Widget By Wpzoom Getwid Events Manager Simply Gallery Block Interactive 3D Flipbook Powered Physics Engine

Libraries

UI Components

Slick Carousel Lightbox Fancybox

CSS Frameworks

Analytics

Other

AOS (Animate On Scroll)

Icon Libraries

Font Awesome

Fonts

Google Fonts

Web Servers

Nginx

SEO Analysis

B74/100

Meta Tags8/15

Content11/12

Headings6/8

Technical22/25

E-E-A-T2/7

Images2/7

Links5/5

URL5/5

Social3/5

Freshness4/4

Mobile3/4

Indexability3/3

upd.edu.phupd.edu.ph

University of the Philippines Diliman

Title Length37 chars

Recommended: 50-60 chars (~212px / 580px)

Description Length37 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (30/35) — critical for accessibility and SEO

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

15 URLs

15 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

28/100

Needs Work

8 9

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

7/25

Citation

12/25

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:1,615

Token eff.:Optimal

Sections/1K:6.8

Depth:1/5

Structured Data

4 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary17w

Descriptive Headingsavg 8.2w

Canonical URL

Open Graph1/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (8)

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.

71/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

15/20

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

5/15

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

4 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.

20/100

1.09 g

CO₂e / view

8.6 MB

Page Weight

Cleaner Than

New Visitor

1.24 g

Returning (cached)

622 mg

Annual (10K/mo)

130.6 kg

Emission Segments

Data Center

243 mg

Network

261 mg

Device

584 mg

Resource Breakdown

JavaScript

2.4 MB

Images

4.7 MB

CSS

1.2 MB

Fonts

195.7 KB

HTML

25.8 KB

Other

64.4 KB

Green Hosting Not Verified

UP Diliman Network, University of the Philippines Diliman

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

66%Fair

Interactive

HTTPS

No WAF

194d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

21.04.2026

Valid Until

05.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.upd.edu.phupd.edu.ph

SHA-256 Fingerprint

0F:D2:5F:50:EF:5C:C7:CA:F8:DA:A1:E4:6C:08:AD:FA:8F:E7:DE:42...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sat, 25 Apr 2026 15:17:29 GMT

link

<https://upd.edu.ph/wp-json/>; rel="https://api.w.org/", <ht...

permissions-policy

geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(sel...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtp-relay.upd.edu.ph

Domain Information

upd.edu.ph

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

75/100

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system + Gothic A1

WCAG AAA

81/100

Readability

/30

26/30

16px · LH 1.50

Hierarchy

/20

12/20

1.5x ratio

WCAG

/25

25/25

8.62:1 min contrast

Performance

/25

18/25

System fonts

Heading Font

-apple-system

Sans24px

Body Font

Gothic A1

Sans16px

Contrast Ratio

8.62:1

WCAG AAA (≥7:1)

Reading Comfort

~48 CPL

Optimal (45–75)

24px

32px

16px

Minor Third

Scale

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

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

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 12/100. Consider shorter sentences and simpler words.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 8.6:1).

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

GGoogle FontsFluid Type (rem)Flesch 12

Color Palette

11 unique colors

4.45:1 AA Large Light

#ffffff

Background· 25.299999999999997%

#897274

Secondary· 5.8%

#dad1d5

Primary· 18%

#ccb1b7

Secondary· 7.5%

#e8e3e8

Secondary· 7.2%

#3f3432

Text· 6.9%

#2e241f

Secondary· 6.8%

#825757

Secondary· 6.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

upd.edu.ph(14)code.jquery.com(2)googletagmanager.com(1)cdn.jsdelivr.net(1)unpkg.com(1)

Website Identity

UP Diliman Information Office

Organization

University of the Philippines Diliman

+632-8981-8500

upd.edu.ph/

University of the Philippines DilimanQuezon City, Philippines 1101+(632) 8981-8500updio@up.edu.phCampus MapUP Diliman Te

Location detected: 🇵🇭 Philippinesvia phone

Social Profiles

Facebook X (Twitter)Instagram YouTube

Sponsored

Last analyzed: 25 Apr 2026 at 15:18

Historical Analysis & Change Tracking