hstalks.com

https://hstalks.com· First analyzed 14 May 2026· Updated 14 May 2026

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hstalks.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.135.89.60

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Dublin, United States

ASN

AS16509

Organization

AWS EC2 (us-east-2)

Server

Nginx

Nameservers

ns-1305.awsdns-35.org.ns-1834.awsdns-37.co.uk.ns-294.awsdns-36.com.ns-788.awsdns-34.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

734 ms10%

Speed Index

954 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.7 MB

97 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

7 Technologies Detected

Analytics

CSS Frameworks

Icon Libraries

Advertising

Web Servers

SEO Analysis

C68/100

Meta Tags12/15

Content12/12

Headings8/8

Technical15/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

hstalks.comhstalks.com

HSTalks - Multimedia Lectures by Leading World Experts | HSTalks

HSTalks publishes animated audio visual presentations by world leading experts - advanced content in a user friendly format. We cover biomedicine, life scien...

Description truncated.

Title Length64 chars

Recommended: 50-60 chars (~387px / 580px)

Description Length230 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (50/55) — critical for accessibility and SEO

7 issues found

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Crawlability

Sitemap

Type: standard

21,150 URLs

robots.txt

10 rules

Local SEO

Local Search Readiness

7/100

Poor

2 14 2

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

Sponsored

AI & LLM Readiness

D40/100

Bot Access

19/25

Machine Read.

7/25

Schema Data

0/25

Citation

14/25

AI Bot Access

13/14 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

nav

Text ratio:30%

Words:7,361

Token eff.:Excessive

Sections/1K:1

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary26w

Descriptive Headingsavg 3.8w

Canonical URL

Open Graph3/3

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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Sponsored

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.

35/100

284 mg

CO₂e / view

2.7 MB

Page Weight

30%

Cleaner Than

New Visitor

324 mg

Returning (cached)

162 mg

Annual (10K/mo)

34.1 kg

Emission Segments

Data Center

14 mg

Network

83 mg

Device

187 mg

Resource Breakdown

JavaScript

201.3 KB

Images

1.1 MB

CSS

1.4 MB

HTML

36.4 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

157d

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

04.04.2026

Valid Until

18.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (3)

hstalks.com*.hstalks.com*.aws.hstalks.com

SHA-256 Fingerprint

35:0E:45:C8:FC:E7:C2:B2:7D:FD:30:A9:18:D1:C5:DB:78:3A:08:60...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

cross-origin-opener-policy

same-origin

date

Thu, 14 May 2026 02:55:56 GMT

referrer-policy

same-origin

server

nginx/1.25.5

Good Warning Issue

Email Infrastructure

Microsoft 365

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

hstalks-com.mail.protection.outlook.com

Domain Information

hstalks.com

Domain Age

23 years

Created

08.05.2003

Expires

08.05.2036

Last Updated

09.05.2026

Registrar

123-Reg Limited

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

59/100

Mobile Friendly

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

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Lato

WCAG Partial

63/100

Readability

/30

21/30

14px · LH 1.43

Hierarchy

/20

19/20

2.86x ratio · ✓ H1→H6

WCAG

/25

14/25

1:1 min contrast

Performance

/25

9/25

1 font · 9 req

Heading Font

Lato

Sans40px

Body Font

Lato

Sans14px

Contrast Ratio

1:1

8 issues

Reading Comfort

~35 CPL

Narrow lines

40px

34px

24px

20px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 22/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 8 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 2.9x larger than body text.

Buy on MyFontsFlesch 22

Color Palette

8 unique colors

4:1 AA Large Light

#7f7f7f

Other· 32%

#ffffff

Background· 27.2%

#250d0a

Primary· 11.4%

#090405

Secondary· 9.9%

#2a2022

Secondary· 7.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)cdn.userway.org(2)

Website Identity

hstalks.com

23 years old

Location detected: 🇺🇸 United Statesvia ip

123-Reg Limited📧 Microsoft 365en

Social Profiles

X (Twitter)LinkedIn

Sponsored

Last analyzed: 14 May 2026 at 02:56

Historical Analysis & Change Tracking