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lgtm.com

https://lgtm.com· First analyzed 17 May 2026· Updated 17 May 2026
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lgtm.com
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Mobile

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Hosting Provider

GitHub Pages
pages.github.com

IP Address

140.82.114.17

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS36459

Organization

GitHub, Inc.

Server

Nginx

CDN

CDN

Nameservers

dns3.p09.nsone.net.dns4.p09.nsone.net.dns1.p09.nsone.net.dns2.p09.nsone.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
591 ms10%
Speed Index
768 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.7 MB
31 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
CMS
WordPressv6.9.4
Infrastructure
Hosting
GitHub Pages
CDN
CDN

Technology Stack

6 Technologies Detected

Plugins

3
Page Links To
Yoast SEO
Jetpack

CSS Frameworks

1
Tailwind CSS

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

A83/100
24
6
1
Meta Tags11/15
Content11/12
Headings8/8
Technical24/25
E-E-A-T5/7
Images3/7
Links2/5
URL5/5
Social4/5
Freshness4/4
Mobile3/4
Indexability3/3
L
lgtm.comlgtm.com

The next step for LGTM.com: GitHub code scanning! - The GitHub Blog

Today, GitHub code scanning has all of LGTM.com’s key features—and more! The time has therefore come to announce the plan for the gradual deprecation of LGTM...

Description truncated.
Title Length67 chars

Recommended: 50-60 chars (~414px / 580px)

Description Length162 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (10/18) — critical for accessibility and SEO

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

17 URLs

17 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

13/100
Poor
4 12 1

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

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AI & LLM Readiness

C60/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
10/25
Citation
19/25

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
nav
Text ratio:8%
Words:2,292
Token eff.:Optimal
Sections/1K:0.4
Depth:1/5

Structured Data

8 JSON-LD
Article×1.2Person×1.3(min)WebSiteBreadcrumbListSearchAction

Citation Readiness

Opening Summary33w
Descriptive Headingsavg 5.2w
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.
B
73/100
13
Passed
4
Critical
3
Warnings
Images & Alt Text
13/20
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
10/15
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
12/15
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.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
42/100
E
348 mg
CO₂e / view
2.7 MB
Page Weight
30%
Cleaner Than
New Visitor
397 mg
vs
Returning (cached)
199 mg
Annual (10K/mo)
41.7 kg
Emission Segments
Data Center
78 mg
Network
83 mg
Device
187 mg
Resource Breakdown
JavaScript
93.8 KB
Images
1.2 MB
CSS
41.7 KB
Fonts
1.3 MB
HTML
28.1 KB
Other
83.9 KB
Green Hosting Not Verified
GitHub Pages
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

46%Poor
Interactive

HTTPS

No WAF

68d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

25.04.2026

Valid Until

24.07.2026

Subject Alternative Names (1)

github.blog

SHA-256 Fingerprint

7B:09:6F:A4:7B:67:9F:BC:6E:22:65:7D:E4:10:23:06:56:A2:B1:D1...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
cache-control
🟡 300s(max-age=300, must-revalidate)
content-encoding
⚡ Brotli(br)
content-type
text/html; charset=UTF-8
date
Sun, 17 May 2026 16:57:57 GMT
host-header
a9130478a60e5f9135f765b23f26593b
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

55

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

Domain Information

lgtm.com

Domain Age
21y 12m

Created

25.05.2004

Expires

25.05.2028

Last Updated

24.04.2026

Registrar

MarkMonitor Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
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.
A
84/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Mona Sans

WCAG AA
87/100
Readability
/30
24/30

18px · LH 1.67

Hierarchy
/20
20/20

2.67x ratio · ✓ H1→H6

WCAG
/25
21/25

4.63:1 min contrast

Performance
/25
22/25

1 font · 3 req

Heading Font

Mona Sans

Sans48px

Body Font

Mona Sans

Sans18px

Contrast Ratio

4.63:1

WCAG AA (≥4.5:1)

Reading Comfort

~37 CPL

Narrow lines
48px
h1
32px
h2
28px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 4.6:1).

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

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

✅ Lean font stack: 1 font families keeps load times fast.

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

Buy on MyFontsVariable FontsFlesch 56

Color Palette

8 unique colors
2.74:1 Fail Light
#8c8f97
Other· 3.5%
#ebeced
Background· 3%
#212830
Secondary· 68.00000000000001%
#2c159c
Accent· 7.8%
#3d21ae
Accent· 7.1%
#241376
Accent· 4.3%
#52526f
Secondary· 3.9%
#313054
Primary· 2.2%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

13 Resources

11
Scripts
2
Styles
0
Async
1
Defer

Top Script Sources

github.blog(6)ghcc.githubassets.com(1)js.monitor.azure.com(1)cdnjs.cloudflare.com(1)analytics.githubassets.com(1)

Website Identity

Bas van Schaik

Person

Today, GitHub code scanning has all of LGTM.com’s key features—and more! The time has therefore come to announce the plan for the gradual deprecation of LGTM.com.

github.blog/author/sjgithub/
21 years old
Location detected: 🇺🇸 United Statesvia ip
MarkMonitor Inc.en-US

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Last analyzed: 17 May 2026 at 16:58

Historical Analysis & Change Tracking