yamllint.com

https://yamllint.com· First analyzed 16 May 2026· Updated 16 May 2026

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yamllint.com

Mobile

Sponsored

Hosting Provider

Render

render.com

IP Address

216.24.57.1

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS397273

Organization

Render

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

dns1.registrar-servers.com.dns2.registrar-servers.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

858 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

481 KB

20 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Render

CDN

Cloudflare

Technology Stack

12 Technologies Detected

Advertising

Google Ads Google AdSense Criteo Outbrain

Analytics

Libraries

CSS Frameworks

Icon Libraries

Fonts

Payments

CDN

SEO Analysis

F38/100

Meta Tags7/15

Content9/12

Headings6/8

Technical5/21

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

yamllint.comyamllint.com

YAMLlint - The YAML Validator

Validate, Verify and Reformat your YAML documents, optimized for Ruby on Rails

Title Length29 chars

Recommended: 50-60 chars (~176px / 580px)

Description Length78 chars

Recommended: 120-160 chars

Issues (1)

• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

14 issues found

Upgrade to view details

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

F29/100

Bot Access

20/25

Machine Read.

4/25

Schema Data

0/25

Citation

5/25

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:11%

Words:8,072

Token eff.:Excessive

Sections/1K:1.5

Structured Data

No Schema

Citation Readiness

Opening Summary26w

Descriptive Headingsavg 3.6w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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.

76/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

9/20

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

11/15

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.

2 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.

50/100

60 mg

CO₂e / view

480.9 KB

Page Weight

90%

Cleaner Than

New Visitor

68 mg

Returning (cached)

34 mg

Annual (10K/mo)

7.1 kg

Emission Segments

Data Center

13 mg

Network

14 mg

Device

32 mg

Resource Breakdown

JavaScript

471.6 KB

CSS

885 B

Fonts

6.2 KB

HTML

2.2 KB

Green Hosting Not Verified

Render

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

WAF

54d

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

11.04.2026

Valid Until

10.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

www.yamllint.com

SHA-256 Fingerprint

57:97:83:91:2D:20:58:14:DF:E1:8C:BE:38:3C:57:64:37:C8:A8:98...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(public, max-age=0, s-maxage=300)

cf-cache-status

HIT

cf-ray🇫🇷 Paris

9fccc0fe0e2f9ead-CDG

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

yamllint.com

Domain Age

15y 9m

Created

19.08.2010

Expires

19.08.2033

Last Updated

11.08.2024

Registrar

NameCheap, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner

Quantcast Choice

GDPR Indicators

Cookie consent banner detected

CMP: Quantcast Choice

Legitimate interest basis 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.

49/100

Not Mobile Friendly11 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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica + Open Sans

WCAG Partial

69/100

Readability

/30

16/30

12px · LH 1.33

Hierarchy

/20

16/20

2.67x ratio

WCAG

/25

19/25

1:1 min contrast

Performance

/25

18/25

2 fonts · 2 req

Heading Font

Helvetica

Sans32px

Body Font

Open Sans

Sans12px

Contrast Ratio

1:1

2 issues

Reading Comfort

~56 CPL

Optimal (45–75)

32px

14px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~56 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 50/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

GGoogle Fonts Buy on MyFontsFlesch 50

Color Palette

6 unique colors

5.74:1 AA Dark

#666666

Other· 74%

#ffffff

Background· 21.2%

#909fb4

Secondary· 2.2%

#2062bc

Primary· 1.2%

#4b668c

Secondary· 0%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pagead2.googlesyndication.com(2).(2)fundingchoicesmessages.google.com(2)code.jquery.com(1)googletagmanager.com(1)

Website Identity

yamllint.com

15 years old

Location detected: 🇺🇸 United Statesvia ip

NameCheap, Inc.

Sponsored

Last analyzed: 16 May 2026 at 19:23

Historical Analysis & Change Tracking