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lemire.me

https://lemire.me· First analyzed 02 May 2026· Updated 02 May 2026
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lemire.me
Desktop screenshot of lemire.me
Mobile screenshot of lemire.me
Mobile

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Hosting Provider

LiteSpeed
cloudflare.com

IP Address

104.21.7.120

Site Location

🇲🇪 Montenegrovia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

chip.ns.cloudflare.com.alice.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
488 ms10%
Speed Index
634 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
34 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
twentyfifteen

Technology Stack

6 Technologies Detected

Plugins

3
Custom Css Js PhpNewsletterWp Power Stats

Libraries

1
jQueryv3.7.1

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

SEO Analysis

C68/100
20
7
1
Meta Tags8/15
Content11/12
Headings8/8
Technical14/25
E-E-A-T3/7
Images4/7
Links2/5
URL5/5
Social4/5
Freshness2/4
Mobile4/4
Indexability3/3
L
lemire.melemire.me

Daniel Lemire's blog – Daniel Lemire is a software performance expe...

Daniel Lemire is a software performance expert. He ranks among the top 2% of scientists globally (Stanford/Elsevier 2025) and is one of GitHub's top 1000 mos...

Title truncated. Description truncated.
Title Length202 chars

Recommended: 50-60 chars (~1222px / 580px)

Description Length179 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (202 chars, ~1222px). Will be truncated in search results.

8 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100
Poor
1 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

D44/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
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.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
code blocksnavheader/footer
Text ratio:28%
Words:16,154
Token eff.:Excessive
Sections/1K:0.6
Depth:3/5

Structured Data

No Schema

Citation Readiness

Opening Summary28w
Descriptive Headingsavg 4.8w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
A
84/100
15
Passed
0
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
20/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
7/15
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
7/15
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.
54/100
B
117 mg
CO₂e / view
1.1 MB
Page Weight
70%
Cleaner Than
New Visitor
134 mg
vs
Returning (cached)
67 mg
Annual (10K/mo)
14.0 kg
Emission Segments
Data Center
6 mg
Network
34 mg
Device
77 mg
Resource Breakdown
JavaScript
38.9 KB
Images
845.7 KB
CSS
211.5 KB
HTML
59.8 KB
Other
349 B
Green Hosting Verified
Cloudflare
GWF Verified
6 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

26%Critical
Interactive

HTTPS

WAF

66d

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+H3

Valid From

08.04.2026

Valid Until

07.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

lemire.me*.lemire.me

SHA-256 Fingerprint

DF:11:48:6F:A6:54:E1:2C:82:99:E9:13:17:D1:15:51:B0:F1:5D:AD...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-edge-cache
cache,platform=wordpress
cf-ray🇫🇷 Paris
9f57d6dc186c2a03-CDG
content-encoding
zstd
content-type
text/html; charset=UTF-8
Good Warning Issue

Email Infrastructure

Fastmail

Score

90

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

in2-smtp.messagingengine.com
in1-smtp.messagingengine.com

Domain Information

lemire.me

Domain Age
15y 5m

Created

11.11.2010

Expires

11.11.2026

Last Updated

17.10.2025

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
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.
B
75/100
Mobile Friendly4 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=1.0
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Noto Sans + Noto Serif

WCAG Partial
73/100
Readability
/30
23/30

19px · LH 1.68

Hierarchy
/20
15/20

1.42x ratio · ✓ H1→H6

WCAG
/25
19/25

3.46:1 min contrast

Performance
/25
16/25

2 fonts · 8 req

Heading Font

Noto Sans

Sans27px

Body Font

Noto Serif

Serif19px

Contrast Ratio

3.46:1

Below AA

Reading Comfort

~38 CPL

Narrow lines
27px
h1
39px
h2
19px
p
Augmented Fourth
Scale

✅ Excellent readability: 19px body text is ideal for all devices.

⚠️ Partial contrast: 0 elements below WCAG AA threshold (min 3.5:1).

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

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

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

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

Buy on MyFontsFlesch 59

Color Palette

9 unique colors
Light
#ffffff
Text· 13.4%
#0a89cc
Primary· 26.299999999999997%
#e9f2f9
Background· 19.1%
#2b250c
Accent· 13.8%
#6c5a33
Secondary· 11.4%
#ceb9a5
Secondary· 8.6%
#f6d8b5
Accent· 3.5%
#449bc4
Accent· 3%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Twitter/X WidgetsFree

Social widgets and sharing tools

2

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

14 Resources

8
Scripts
6
Styles
1
Async
1
Defer

Top Script Sources

lemire.me(6)platform.twitter.com(1)platform.x.com(1)

Website Identity

lemire.me

15 years old
Location detected: 🇲🇪 Montenegrovia tld
NameCheap, Inc.📧 Fastmailen-US

Social Profiles

GitHubTelegram

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Last analyzed: 02 May 2026 at 14:50

Historical Analysis & Change Tracking