brendangregg.com

https://brendangregg.com· First analyzed 26 Apr 2026· Updated 26 Apr 2026

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brendangregg.com

Mobile

Sponsored

Hosting Provider

New Dream Network, LLC

IP Address

64.90.53.70

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Brea, United States

ASN

AS26347

Organization

New Dream Network, LLC

Server

Apache

Nameservers

ns2.dreamhost.com.ns3.dreamhost.com.ns1.dreamhost.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

657 ms10%

Speed Index

854 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

115 KB

7 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Technology Stack

3 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Web Servers

Apache

SEO Analysis

D57/100

Meta Tags9/15

Content12/12

Headings8/8

Technical7/21

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

brendangregg.combrendangregg.com

Brendan Gregg's Homepage

Brendan Gregg's homepage: I use this site to share various things, mostly my work with computers, specifically, computer performance analysis and methodology.

Title Length24 chars

Recommended: 50-60 chars (~152px / 580px)

Description Length158 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (5/5) — critical for accessibility and SEO

11 issues found

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Local SEO

Local Search Readiness

0/100

Poor

15 2

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

Sponsored

AI & LLM Readiness

F34/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

8/25

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:48%

Words:9,853

Token eff.:Excessive

Sections/1K:0.2

Structured Data

No Schema

Citation Readiness

Opening Summary59w

Descriptive Headingsavg 1w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

56/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

11/20

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

9/15

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

ARIA & Roles

1/15

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

3 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.

60/100

A+

14 mg

CO₂e / view

115.4 KB

Page Weight

95%

Cleaner Than

New Visitor

16 mg

Returning (cached)

8 mg

Annual (10K/mo)

1.7 kg

Emission Segments

Data Center

3 mg

Network

3 mg

Device

8 mg

Resource Breakdown

Images

77.9 KB

CSS

1.8 KB

HTML

35.7 KB

Green Hosting Not Verified

New Dream Network, LLC

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

60d

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

Valid From

27.03.2026

Valid Until

25.06.2026

Subject Alternative Names (2)

brendangregg.comwww.brendangregg.com

SHA-256 Fingerprint

8C:E6:18:19:49:65:AC:7C:59:DD:BC:30:BE:70:1B:B1:77:20:79:0B...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sun, 26 Apr 2026 10:47:22 GMT

expires

Sun, 26 Apr 2026 10:57:22 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

brendangregg.com

Domain Age

22y 6m

Created

08.10.2003

Expires

08.10.2028

Last Updated

30.06.2025

Registrar

DreamHost, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

30/100

Not 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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Avant Garde + Garamond

WCAG AAA

76/100

Readability

/30

22/30

16px · LH 1.30

Hierarchy

/20

14/20

1.75x ratio · ✓ H1→H6

WCAG

/25

24/25

13.29:1 min contrast

Performance

/25

16/25

2 fonts

Heading Font

Avant Garde

Sans28px

Body Font

Garamond

Serif16px

Contrast Ratio

13.29:1

WCAG AAA (≥7:1)

Reading Comfort

~44 CPL

Narrow lines

28px

22px

16px

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

⚠️ Tight line spacing (1.30). Increase to 1.4–1.6 for better readability.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 13.3:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 52

Color Palette

7 unique colors

4.61:1 AA Light

#ffffff

Background· 45.8%

#7b727f

Other· 4.2%

#fee0e0

Primary· 18.400000000000002%

#eef2f0

Secondary· 14.8%

#9fa1b2

Secondary· 6.7%

#b0bac7

Secondary· 5.8%

#dcd4d5

Secondary· 4.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(1)

Website Identity