slpl.org

https://slpl.org· First analyzed 29 May 2026· Updated 29 May 2026

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slpl.org

Mobile

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

75.2.110.162

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Apache

CDN

Varnish

Nameservers

pdns05.domaincontrol.com.pdns06.domaincontrol.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

732 KB

98 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPress

cms

bibliowebCustom

Technology Stack

11 Technologies Detected

Plugins

Miniorange Oauth Oidc Single Sign On

Analytics

Libraries

UI Components

CSS Frameworks

Fonts

Tag Managers

Web Servers

SEO Analysis

C62/100

Meta Tags9/15

Content8/12

Headings8/8

Technical17/21

E-E-A-T0/7

Images2/7

Links2/5

URL5/5

Social5/5

Freshness0/4

Mobile3/4

Indexability3/3

slpl.orgslpl.org

St. Louis Public Library

The St. Louis Public Library has 17 locations across the city and sees more than 2.3 million visitors each year. The Library has more…

Title Length24 chars

Recommended: 50-60 chars (~137px / 580px)

Description Length134 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (66/70) — critical for accessibility and SEO

7 issues found

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Local SEO

Local Search Readiness

41/100

Fair

10 10 1

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AI & LLM Readiness

F35/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

8/25

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

Text ratio:1%

Words:1,400

Token eff.:Optimal

Structured Data

1 JSON-LD

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.2w

Canonical URL

Open Graph3/3

Twitter Card2/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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.

88/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

17/20

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

13/15

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

ARIA & Roles

8/15

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

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.

73/100

74 mg

CO₂e / view

731.8 KB

Page Weight

80%

Cleaner Than

New Visitor

85 mg

Returning (cached)

42 mg

Annual (10K/mo)

8.9 kg

Emission Segments

Data Center

4 mg

Network

22 mg

Device

49 mg

Resource Breakdown

JavaScript

73.7 KB

Fonts

3.3 KB

HTML

654.3 KB

Other

411 B

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Interactive

HTTPS

No WAF

36d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

06.04.2026

Valid Until

05.07.2026

Subject Alternative Names (2)

slpl.orgwww.slpl.org

SHA-256 Fingerprint

B3:78:3D:BB:6C:BD:CB:12:B2:DF:EA:08:DF:A5:8E:41:D5:95:4F:71...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

254

cache-control

🟡 300s(max-age=300, private)

content-length

669734

content-security-policy

frame-ancestors www.slpl.org *.www.slpl.org slpl.org *.slpl....

content-type

text/html; charset=UTF-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (5)

alt2.aspmx.l.google.com

alt3.aspmx.l.google.com

alt1.aspmx.l.google.com

aspmx.l.google.com

+1 more

Domain Information

slpl.org

Domain Age

24y 10m

Created

02.08.2001

Expires

02.08.2030

Last Updated

28.06.2024

Registrar

GoDaddy.com, LLC

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.

70/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica

WCAG Partial

77/100

Readability

/30

23/30

16px · LH 1.50

Hierarchy

/20

20/20

2.5x ratio · ✓ H1→H6

WCAG

/25

19/25

1:1 min contrast

Performance

/25

15/25

2 fonts · 2 req

Heading Font

Helvetica

Sans40px

Body Font

Helvetica

Sans16px

Contrast Ratio

1:1

2 issues

Reading Comfort

~44 CPL

Narrow lines

40px

32px

24px

16px

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

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

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

GGoogle Fonts Buy on MyFontsFlesch 37

Color Palette

9 unique colors

Light

#ffffff

Background· 50.6%

#c6eafa

Accent· 14.899999999999999%

#172766

Primary· 10.8%

#07396a

Primary· 6%

#696d80

Border· 5%

#8ccee3

Accent· 3.9%

#dfd59c

Accent· 3%

#562964

Secondary· 3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn-web-main.bibliocms.com(8)cdn-nerf.bibliocommons.com(7)googletagmanager.com(3)translate.googleapis.com(1)translate.google.com(1)

Website Identity

St. Louis Public Library

Library

3142412288

www.slpl.org

24 years old

Location detected: 🇺🇸 United Statesvia ip

GoDaddy.com, LLC📧 Google Workspaceen-US

Social Profiles

Facebook X (Twitter)Instagram YouTube

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Last analyzed: 29 May 2026 at 21:44

Historical Analysis & Change Tracking