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

phila.gov

https://phila.gov· First analyzed 17 Feb 2026· Updated 17 Feb 2026

Export

phila.gov

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.164.206.27

Server Location

🇫🇮 Helsinki, Finland

ASN

AS16509

Organization

AWS CloudFront (GLOBAL)

Server

AmazonS3

CDN

CloudFront

Nameservers

ns-1032.awsdns-01.org.ns-1720.awsdns-23.co.uk.ns-265.awsdns-33.com.ns-978.awsdns-58.net.

Performance

Page Speed

9.9 MB

105 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

Technology Stack

13 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Microsoft Clarity

Plugins

Phl Aqi Google Calendar Events

Libraries

Other

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

SEO Analysis

C68/100

phila.govphila.gov

City of Philadelphia

Official website of the City of Philadelphia, includes information on municipal services, permits, licenses, and records for citizens and businesses.

Title Length20 chars

Recommended: 50-60 chars

Description Length149 chars

Recommended: 120-160 chars

Issues (1)

• Many images missing alt text (22/41)

4 issues found

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Crawlability

Sitemap

Type: standard

7,905 URLs

robots.txt

Sponsored

Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

347d

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

01.01.2026

Valid Until

30.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

phila.govwww.phila.gov

SHA-256 Fingerprint

8D:66:D9:7F:BD:2A:9E:52:0C:FA:DF:EF:E7:72:24:C3:F4:08:D2:8E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 17 Feb 2026 03:07:44 GMT

etag

W/"a2e5afcc8bcf3fb5a2bc74b79baad812"

last-modified

Mon, 16 Feb 2026 16:36:39 GMT

server

AmazonS3

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

phila-gov.mail.protection.outlook.com

Domain Information

phila.gov

Domain Age

28y 4m

Created

02.10.1997

Expires

23.10.2026

Last Updated

28.10.2025

Registrar

get.gov

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Typography & Readability

Tahoma + sans-serif

90/100

Readability

/30

40/40

16px · LH 1.50

Hierarchy

/20

25/25

2.29x ratio

WCAG

/25

15/15

Contrast: undefined

Performance

/25

17/20

System fonts

Heading Font

Tahoma

Sans37px

Body Font

sans-serif

Sans16px

Contrast Ratio

Reading Comfort

Dual Sans-Serif

left aligned

37px

60px

40px

Major Second

Scale

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

✅ Optimal line spacing: 1.50 ratio ensures comfortable reading.

✅ Strong hierarchy: Headlines are 2.3x larger than body text.

✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

✅ Protected text on images: Using text-shadow for readability.

⚠️ Cramped layout: 19 elements lack adequate spacing.

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Business & Marketing Stack

3 Tools Detected

Growing

Behavior Analytics

Microsoft ClarityFree

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

phila.gov(11)googletagmanager.com(3)code.highcharts.com(2)scripts.clarity.ms(1)google-analytics.com(1)

Website Identity

Facebook X (Twitter)Instagram YouTube GitHub

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Last analyzed: 17 Feb 2026 at 03:08

Historical Analysis & Change Tracking