spl.org

https://spl.org· First analyzed 29 Apr 2026· Updated 29 Apr 2026

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spl.org

Mobile

Sponsored

Hosting Provider

City of Seattle

IP Address

156.74.248.70

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS3401

Organization

City of Seattle

Nameservers

blue.foundationdns.com.blue.foundationdns.net.blue.foundationdns.org.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.6 MB

109 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

Infrastructure

Hosting

City of Seattle

Technology Stack

8 Technologies Detected

CSS Frameworks

Bootstrapv4.3.1

Tailwind CSS

Fonts

Google Fonts Adobe Fonts (Typekit)

Analytics

Libraries

Icon Libraries

SEO Analysis

C65/100

Meta Tags11/15

Content12/12

Headings3/8

Technical12/21

E-E-A-T3/7

Images2/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile4/4

Indexability3/3

spl.orgspl.org

SPL - Home | The Seattle Public Library

The Seattle Public Library gives you 24/7 free access to books, music, movies, TV shows, classes and more.

Title Length39 chars

Recommended: 50-60 chars (~233px / 580px)

Description Length106 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Local SEO

Local Search Readiness

13/100

Poor

4 12 2

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

Sponsored

AI & LLM Readiness

D42/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

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

navheader/footer

Text ratio:5%

Words:998

Token eff.:Optimal

Sections/1K:11

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary13w

Descriptive Headingsavg 3.7w

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

70/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

13/20

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

Forms & Inputs

5/15

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

10/15

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

ARIA & Roles

7/15

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

2 recommendations

•Accessibility recommendation preview...

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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.

31/100

199 mg

CO₂e / view

1.6 MB

Page Weight

60%

Cleaner Than

New Visitor

228 mg

Returning (cached)

114 mg

Annual (10K/mo)

23.9 kg

Emission Segments

Data Center

45 mg

Network

48 mg

Device

107 mg

Resource Breakdown

JavaScript

136.6 KB

Images

875.8 KB

CSS

576.0 KB

HTML

22.4 KB

Green Hosting Not Verified

City of Seattle

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

311d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

03.02.2026

Valid Until

06.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (3)

*.spl.orgspl.orgwww.spl.org

SHA-256 Fingerprint

A5:83:1F:50:CF:19:4F:88:04:05:CE:DB:29:FA:E5:18:1F:D5:28:9D...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache)

content-encoding

📦 Gzip(gzip)

content-length

22645

content-type

text/html; charset=utf-8

date

Wed, 29 Apr 2026 17:33:28 GMT

expires

-1

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

100

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

spl-org.mail.protection.outlook.com

Domain Information

spl.org

Domain Age

30y 8m

Created

18.08.1995

Expires

17.08.2026

Last Updated

23.06.2025

Registrar

Network Solutions, LLC

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.

62/100

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

Tinos

WCAG Partial

56/100

Readability

/30

23/30

22px · LH 1.40

Hierarchy

/20

8/20

WCAG

/25

12/25

1:1 min contrast

Performance

/25

13/25

System fonts

Heading Font

Tinos

Sans

Body Font

Tinos

Sans22px

Contrast Ratio

1:1

4 issues

Reading Comfort

Single Font Family

left aligned

40px

32px

22px

✅ Excellent readability: 22px body text is ideal for all devices.

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

AAdobe Fonts Buy on MyFontsFlesch 39

Color Palette

9 unique colors

7.68:1 AAA Light

#ffffff

Background· 25.500000000000004%

#595155

Other· 8.6%

#0062ad

Primary· 18.8%

#1c1015

Secondary· 11.8%

#c682a7

Secondary· 7.2%

#686e85

Secondary· 6.3%

#263d50

Secondary· 3.9%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(7)use.typekit.net(1)googletagmanager.com(1)translate.googleapis.com(1)translate.google.com(1)

Website Identity

spl.org

30 years old

1000 Fourth Ave.Seattle, WA 98104-1109206-386-4636 orAsk Us

Location detected: 🇺🇸 United Statesvia ip

Network Solutions, LLC📧 Microsoft 365en

Social Profiles

Facebook Instagram LinkedIn YouTube Bluesky

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Last analyzed: 29 Apr 2026 at 17:33

Historical Analysis & Change Tracking