mastering.com

https://mastering.com· First analyzed 28 May 2026· Updated 28 May 2026

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mastering.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.26.10.239

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

yichun.ns.cloudflare.com.gina.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

833 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.6 MB

125 requests

Image Optimization

Lazy LoadAVIFResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPress

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

31 Technologies Detected

Plugins

Activecampaign Subscription Forms

Ht Mega For Elementor

Elementor

Ultimate Elementor

Mastering Widgets Advanced Responsive Video Embedder Nelio Ab Testing Thrive Visual Editor Dynamicconditions Moam Features Q2W3 Fixed Widget Perfmatters

Analytics

Libraries

CSS Frameworks

Advertising

Google Ads Google AdSense

Other

Icon Libraries

Tag Managers

Customer Support

Reviews

CDN

Security

SEO Analysis

A86/100

Meta Tags15/15

Content10/12

Headings8/8

Technical24/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness4/4

Mobile3/4

Indexability3/3

mastering.commastering.com

Mastering.com - The Future of Music Production Education

Learn recording, producing, mixing & mastering to an industry standard. Start mastering your own music. Tuition, 1:1 mentorship & community.

Title Length56 chars

Recommended: 50-60 chars (~344px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (62/66) — critical for accessibility and SEO

6 issues found

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Crawlability

Sitemap

Type: index

3 URLs

3 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

26/100

Needs Work

7 11

Sponsored

AI & LLM Readiness

D52/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

13/25

Citation

14/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:5%

Words:3,921

Token eff.:Poor Structure

Structured Data

6 JSON-LD

FAQPage×1.5Organization×1.1WebSiteBreadcrumbListSearchAction

sameAs entity links

Citation Readiness

Opening Summary219w

Descriptive Headingsavg 3.3w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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.

82/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

14/15

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

6/15

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.

58/100

163 mg

CO₂e / view

1.6 MB

Page Weight

60%

Cleaner Than

New Visitor

186 mg

Returning (cached)

93 mg

Annual (10K/mo)

19.5 kg

Emission Segments

Data Center

8 mg

Network

48 mg

Device

107 mg

Resource Breakdown

JavaScript

867.9 KB

Images

43.5 KB

CSS

611.5 KB

Fonts

7.0 KB

HTML

61.9 KB

Other

20.4 KB

Green Hosting Verified

Cloudflare

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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A+

Security Score

93%Excellent

Static / Informational

HTTPS

WAF

45d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

14.04.2026

Valid Until

13.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

mastering.com*.mastering.com

SHA-256 Fingerprint

6D:86:4B:A3:EE:9E:ED:A2:16:D3:1C:90:5E:74:D6:D2:3F:82:8B:79...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cf-cache-status

DYNAMIC

cf-ray

a0302d6a5b2a83c3-BOS

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 28 May 2026 20:58:26 GMT

fastcgi-cache

HIT

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt1.aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

alt2.aspmx.l.google.com

+1 more

Domain Information

mastering.com

Domain Age

26y 3m

Created

09.02.2000

Expires

09.02.2032

Last Updated

09.02.2023

Registrar

NameCheap, Inc.

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.

80/100

Mobile Friendly63 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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Manier Heavy + Gotham Book

WCAG Partial

66/100

Readability

/30

23/30

16px · LH 1.86

Hierarchy

/20

18/20

3.94x ratio · ✓ H1→H6

WCAG

/25

15/25

1:1 min contrast

Performance

/25

10/25

System fonts

Heading Font

Manier Heavy

Sans63px

Body Font

Gotham Book

Sans16px

Contrast Ratio

1:1

21 issues

Reading Comfort

~35 CPL

Narrow lines

63px

72px

44px

18px

16px

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

⚠️ Wide line spacing (1.86). 1.4–1.6 is optimal for body text.

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 21 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 3.9x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 44

Color Palette

4 unique colors

Light

#91837d

Secondary· 1.4%

#160834

Primary· 49.300000000000004%

#261b4a

Secondary· 38%

#dac49d

Secondary· 11.3%

Business & Marketing Stack

6 Tools Detected

Enterprise

Customer Support

IntercomMid-Market

Live chat and helpdesk tools

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Reviews & Social Proof

TrustpilotMid-Market

Customer reviews and testimonials

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(4)mastering.com(4)youtube.com(2)pagead2.googlesyndication.com(2)google-analytics.com(2)

Website Identity

Mastering.com

Organization

Learn recording, producing, mixing & mastering to an industry standard. Start mastering your own music. Tuition, 1:1 mentorship & community.

mastering.com/

26 years old

Location detected: 🇨🇦 Canadavia ip

NameCheap, Inc.📧 Google Workspaceen-US

Sponsored

Last analyzed: 28 May 2026 at 20:58

Historical Analysis & Change Tracking