dnalc.org

https://dnalc.org· First analyzed 07 May 2026· Updated 07 May 2026

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dnalc.org

Mobile

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Hosting Provider

Cold Spring Harbor Laboratory

IP Address

143.48.220.35

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Cold Spring Harbor, United States

ASN

AS13748

Organization

Cold Spring Harbor Laboratory

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

vin.ns.cloudflare.com.jen.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

735 ms10%

Speed Index

956 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4 MB

111 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Cold Spring Harbor Laboratory

CDN

Cloudflare

Technology Stack

16 Technologies Detected

Libraries

Analytics

CSS Frameworks

UI Components

Other

AOS (Animate On Scroll)

Icon Libraries

Fonts

Tag Managers

Marketing

Advertising

Web Servers

SEO Analysis

D52/100

Meta Tags4/15

Content11/12

Headings6/8

Technical15/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

dnalc.orgdnalc.org

CSHL DNA Learning Center

No description available for this page.

Title Length24 chars

Recommended: 50-60 chars (~146px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

12 issues found

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Crawlability

Sitemap

Type: standard

2,908 URLs

robots.txt

6 rules

Sitemap reference found

Local SEO

Local Search Readiness

19/100

Poor

7 9 2

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

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AI & LLM Readiness

D41/100

Bot Access

20/25

Machine Read.

12/25

Schema Data

0/25

Citation

9/25

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

header/footer

Text ratio:10%

Words:957

Token eff.:Optimal

Sections/1K:7.3

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary11w

Descriptive Headingsavg 7.4w

Canonical URL

Open Graph0/3

Twitter Card0/3

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.

76/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

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

9/15

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

ARIA & Roles

3/15

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

1 recommendation

•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.

24/100

504 mg

CO₂e / view

4.0 MB

Page Weight

15%

Cleaner Than

New Visitor

576 mg

Returning (cached)

288 mg

Annual (10K/mo)

60.5 kg

Emission Segments

Data Center

113 mg

Network

121 mg

Device

270 mg

Resource Breakdown

JavaScript

378.0 KB

Images

1.0 MB

CSS

2.6 MB

Fonts

2.9 KB

HTML

13.3 KB

Green Hosting Not Verified

Cold Spring Harbor Laboratory

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

53d

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

01.04.2026

Valid Until

30.06.2026

Subject Alternative Names (12)

barcodeli.orgbioserver.orgbioservers.orgdnabarcoding101.orgdnalc.cshl.edudnalc.orgvector.cshl.eduwww.barcodeli.org+4 more

SHA-256 Fingerprint

B9:28:7D:F5:F8:88:BB:D7:99:7C:B1:81:90:69:A0:91:74:19:4F:F5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Thu, 07 May 2026 05:02:02 GMT

expires

Thu, 07 May 2026 05:02:02 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

dnalc.org

Domain Age

26y 7m

Created

04.10.1999

Expires

04.10.2026

Last Updated

05.10.2025

Registrar

CSC Corporate Domains, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookiebot

Cookie Consent Banner

Cookiebot

GDPR Indicators

Cookie consent banner detected

CMP: Cookiebot

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.

51/100

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, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Lato + Source Sans Pro

WCAG Partial

63/100

Readability

/30

24/30

18px · LH 1.50

Hierarchy

/20

16/20

2.78x ratio

WCAG

/25

13/25

1:1 min contrast

Performance

/25

10/25

3 fonts · 13 req

Heading Font

Lato

Sans50px

Body Font

Source Sans Pro

Sans18px

Contrast Ratio

1:1

19 issues

Reading Comfort

~43 CPL

Narrow lines

50px

22px

15px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 42/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 19 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.8x larger than body text.

GGoogle FontsFlesch 42

Color Palette

11 unique colors

10.86:1 AAA Dark

#3d3d3d

Text· 25.8%

#ffffff

Background· 21.900000000000002%

#ee4e29

Accent· 9.1%

#094a7f

Primary· 7.1%

#ddd0c3

Secondary· 5.2%

#8dbfb8

Secondary· 4.4%

#c39595

Secondary· 3.7%

#70403c

Secondary· 3.1%

Business & Marketing Stack

6 Tools Detected

Enterprise

CRM Systems

HubSpotMid-Market

Customer Relationship Management platforms

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

LinkedIn AdsEnterprise

Ad platforms and retargeting pixels

Privacy & Cookies

CookiebotMid-Market

Cookie consent and privacy compliance tools

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Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(7)snap.licdn.com(2)connect.facebook.net(1)google-analytics.com(1)agent.marketingcloudfx.com(1)

Website Identity

dnalc.org

[email protected]

26 years old

Location detected: 🇺🇸 United Statesvia ip

CSC Corporate Domains, Inc.en

Social Profiles

Facebook X (Twitter)Instagram LinkedIn YouTube Bluesky

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Last analyzed: 07 May 2026 at 05:02

Historical Analysis & Change Tracking