chemistrytalk.org

https://chemistrytalk.org· First analyzed 25 May 2026· Updated 25 May 2026

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chemistrytalk.org

Mobile

Sponsored

Hosting Provider

DigitalOcean

digitalocean.com

IP Address

161.35.181.142

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Clifton, United States

ASN

AS14061

Organization

DigitalOcean, LLC

Server

Nginx

CDN

Nameservers

ns3.dnsowl.com.ns1.dnsowl.com.ns2.dnsowl.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

953 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.8 MB

132 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.7.5

Infrastructure

Hosting

DigitalOcean

CDN

Technology Stack

25 Technologies Detected

Plugins

Wp Quicklatex Add Search To Menu

Header Footer Elementor

Elementor

Fluentform Ele Custom Skin

Duracelltomi Google Tag Manager

Real Time Auto Find And Replace Facetwp

Libraries

CSS Frameworks

Analytics

UI Components

Other

Icon Libraries

Fonts

Tag Managers

Web Servers

SEO Analysis

B74/100

Meta Tags12/15

Content10/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images3/7

Links2/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

chemistrytalk.orgchemistrytalk.org

Chemistry made fun and easy | ChemTalk

Chemistry education non-profit showcasing elements, reactions, experiments and tutorials. We make chemistry fun and easy to understand.

Title Length38 chars

Recommended: 50-60 chars (~237px / 580px)

Description Length135 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (56/60) — critical for accessibility and SEO

11 issues found

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Crawlability

Sitemap

Type: index

8 URLs

8 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

16/100

Poor

5 12

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

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

9/25

Schema Data

7/25

Citation

16/25

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:4%

Words:1,633

Token eff.:Optimal

Structured Data

5 JSON-LD

Organization×1.1WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary65w

Descriptive Headingsavg 3.6w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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

10/20

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

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

15/15

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.

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.

38/100

394 mg

CO₂e / view

3.8 MB

Page Weight

15%

Cleaner Than

New Visitor

450 mg

Returning (cached)

225 mg

Annual (10K/mo)

47.3 kg

Emission Segments

Data Center

19 mg

Network

116 mg

Device

259 mg

Resource Breakdown

JavaScript

234.3 KB

Images

1.5 MB

CSS

2.0 MB

Fonts

3.4 KB

HTML

41.1 KB

Green Hosting Verified

DigitalOcean

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

35d

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 (2)

chemistrytalk.orgwww.chemistrytalk.org

SHA-256 Fingerprint

35:6D:A5:B0:C4:47:4C:69:CC:A1:3A:BF:3B:3F:91:82:78:FD:66:04...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

6819

content-encoding

📦 Gzip(gzip)

content-length

41753

content-type

text/html; charset=UTF-8

date

Mon, 25 May 2026 04:20:24 GMT

Good Warning Issue

Email Infrastructure

Rackspace Email

Score

SPF

DKIM

DMARC

MX Records (2)

mx1.emailsrvr.com

mx2.emailsrvr.com

Domain Information

chemistrytalk.org

Domain Age

5y 5m

Created

04.12.2020

Expires

04.12.2026

Last Updated

18.01.2026

Registrar

NameSilo, 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.

78/100

Mobile Friendly70 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.

Viewport

width=device-width, initial-scale=1

1 recommendation

•Mobile compatibility recommendation preview...

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Typography & Readability

Roboto

WCAG Partial

62/100

Readability

/30

19/30

15px · LH 1.33

Hierarchy

/20

5/20

WCAG

/25

18/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Roboto

Sans

Body Font

Roboto

Sans15px

Contrast Ratio

1:1

36 issues

Reading Comfort

~47 CPL

Optimal (45–75)

40px

24px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~47 chars/line (ideal 45–75 CPL).

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

⚠️ Partial contrast: 36 elements below WCAG AA threshold (min 1.0:1).

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

GGoogle FontsFluid Type (rem)Flesch 39

Color Palette

5 unique colors

10.49:1 AAA Light

#ffffff

Background· 36.9%

#3e3f45

Other· 1.9%

#d0d9ff

Primary· 57.2%

#ab938f

Secondary· 2.5%

#bfc6df

Secondary· 1.5%

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

chemistrytalk.org(14)googletagmanager.com(2)google-analytics.com(1)kit.fontawesome.com(1)cdn.jsdelivr.net(1)

Website Identity

ChemTalk

Organization

Chemistry education non-profit showcasing elements, reactions, experiments and tutorials. We make chemistry fun and easy to understand.

admin@chemistrytalk.org

chemistrytalk.org/

5 years old

Location detected: 🇺🇸 United Statesvia ip

NameSilo, LLC📧 Rackspace Emailen-US

Social Profiles

Facebook X (Twitter)Instagram YouTube TikTok

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Last analyzed: 25 May 2026 at 04:20

Historical Analysis & Change Tracking