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

um.ac.id

https://um.ac.id· First analyzed 25 Apr 2026· Updated 25 Apr 2026

Export

um.ac.id

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.20.30.250

Site Location

🇮🇩 Indonesiavia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tessa.ns.cloudflare.com.matias.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

525 ms10%

Speed Index

682 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

190 KB

83 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Diviv4.27.6Custom

by Elegant Themes

View Theme

Technology Stack

18 Technologies Detected

Plugins

Post Views Counter Wp Whatsapp Pdf Print

WPML

Supreme Modules Pro For Divi

Libraries

Other

UI Components

CSS Frameworks

Icon Libraries

Fonts

Analytics

CDN

Languages

SEO Analysis

D56/100

Meta Tags10/15

Content2/12

Headings8/8

Technical17/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social0/5

Freshness2/4

Mobile1/4

Indexability3/3

um.ac.idum.ac.id

Universitas Negeri Malang (UM) | The Learning University

No description available for this page.

Title Length56 chars

Recommended: 50-60 chars (~335px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (3)

• Missing meta description — important for click-through rates in SERPs
• Very thin content (8 words). Search engines need substantial content for ranking.
• Most images missing alt text (45/46) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

4 rules

Sitemap reference found

Local SEO

Local Search Readiness

3/100

Poor

1 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

F32/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

2/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:0%

Words:1,234

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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

14/15

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

6/15

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.

74/100

A+

19 mg

CO₂e / view

190.1 KB

Page Weight

95%

Cleaner Than

New Visitor

22 mg

Returning (cached)

11 mg

Annual (10K/mo)

2.3 kg

Emission Segments

Data Center

<0.001 g

Network

6 mg

Device

13 mg

Resource Breakdown

HTML

189.6 KB

Other

428 B

Green Hosting Verified

Cloudflare

GWF Verified

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

86%Very Good

Static / Informational

HTTPS

WAF

20d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

14.04.2025

Valid Until

15.05.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.um.ac.idum.ac.id

SHA-256 Fingerprint

96:0D:B3:74:A2:7B:46:D0:33:81:BE:34:2E:16:1C:10:A8:D4:A7:0A...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇫🇷 Paris

9f208476accf48d2-CDG

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Sat, 25 Apr 2026 21:42:28 GMT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

ASPMX3.GOOGLEMAIL.COM

ASPMX2.GOOGLEMAIL.COM

ALT2.ASPMX.L.GOOGLE.COM

ASPMX.L.GOOGLE.COM

+1 more

Domain Information

um.ac.id

Domain Age

18y 1m

Created

17.03.2008

Expires

03.04.2033

Last Updated

07.11.2025

Registrar

PT Jetcoms Netindo

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

59/100

Not Mobile Friendly81 breakpoints

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.

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Albert Sans

WCAG Partial

65/100

Readability

/30

14/30

14px · LH 1.70

Hierarchy

/20

18/20

3.43x ratio · ✓ H1→H6

WCAG

/25

15/25

2.75:1 min contrast

Performance

/25

18/25

1 font · 6 req

Heading Font

Albert Sans

Sans48px

Body Font

Albert Sans

Sans14px

Contrast Ratio

2.75:1

4 issues

Reading Comfort

~34 CPL

Narrow lines

48px

26px

40px

18px

14px

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

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.8:1).

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

✅ Strong hierarchy: Headlines are 3.4x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFluid TypeFlesch 0

Color Palette

14 unique colors

8.53:1 AAA Light

#dcdde0

Other· 10.5%

#333b32

Text· 7.5%

#fefefc

Primary· 12.8%

#edede9

Secondary· 10.600000000000001%

#586e7f

Secondary· 9.1%

#8da6be

Secondary· 7.8%

#74828e

Secondary· 6.1%

#151e2b

Secondary· 6%

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

um.ac.id(17)googletagmanager.com(1)cdn.jsdelivr.net(1)static.cloudflareinsights.com(1)

Website Identity

um.ac.id

18 years old

Location detected: 🇮🇩 Indonesiavia tld

PT Jetcoms Netindo📧 Google Workspaceid-ID

Sponsored

Last analyzed: 25 Apr 2026 at 21:43

Historical Analysis & Change Tracking