neetcode.io

https://neetcode.io· First analyzed 01 Jun 2026· Updated 01 Jun 2026

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neetcode.io

Mobile

Sponsored

Hosting Provider

Google Cloud Platform

cloud.google.com

IP Address

199.36.158.100

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Mountain View, United States

ASN

AS54113

Organization

Google LLC

CDN

Fastly

Nameservers

ns-cloud-e2.googledomains.com.ns-cloud-e4.googledomains.com.ns-cloud-e1.googledomains.com.ns-cloud-e3.googledomains.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.4 s10%

Speed Index

1.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.6 MB

50 requests

Image Optimization

Lazy LoadWebPCloudflare Images

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Ghost

Technology Stack

7 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel PostHog

Frameworks

Angularv18.2.14

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

SEO Analysis

D49/100

Meta Tags5/15

Content3/12

Headings6/8

Technical15/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

neetcode.ioneetcode.io

NeetCode

A better way to prepare for coding interviews.

Title Length8 chars

Recommended: 50-60 chars (~49px / 580px)

Description Length46 chars

Recommended: 120-160 chars

Issues (1)

• Very thin content (1 words). Search engines need substantial content for ranking.

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,582 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

4/100

Poor

1 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.

12/25

Schema Data

0/25

Citation

2/25

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:1%

Words:515

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

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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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.

48/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

6/20

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

7/15

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.

54/100

267 mg

CO₂e / view

2.6 MB

Page Weight

30%

Cleaner Than

New Visitor

305 mg

Returning (cached)

153 mg

Annual (10K/mo)

32.1 kg

Emission Segments

Data Center

13 mg

Network

79 mg

Device

176 mg

Resource Breakdown

JavaScript

722.0 KB

Images

1.8 MB

CSS

31.5 KB

HTML

5.4 KB

Other

326 B

Green Hosting Verified

Google Cloud Platform

Provider Match

6 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

76d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.05.2026

Valid Until

16.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (20)

staging.admin.10seat.comdkvform-de-testing.input4you.beloopmobile.iode.oilwellness.companycustom.dev.clevateam.ioportal-developer.keepee.com.brdemoveep.inhance.iowww.godycountry.com+12 more

SHA-256 Fingerprint

86:47:31:A8:0E:D5:CE:00:6D:12:57:EB:D0:3F:B0:17:4A:17:35:5E...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

alt-svc

h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=864...

cache-control

🟡 1 Hours(max-age=3600)

content-encoding

⚡ Brotli(br)

content-length

5241

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

smtp.google.com

Domain Information

neetcode.io

Domain Age

4y 4m

Created

17.01.2022

Expires

17.01.2027

Last Updated

30.01.2026

Registrar

Key-Systems GmbH

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.

69/100

Mobile Friendly32 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...

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Typography & Readability

Inter

WCAG Partial

68/100

Readability

/30

20/30

16px · LH 1.70

Hierarchy

/20

17/20

3.25x ratio

WCAG

/25

15/25

1:1 min contrast

Performance

/25

16/25

System fonts

Heading Font

Inter

Sans52px

Body Font

Inter

Sans16px

Contrast Ratio

1:1

18 issues

Reading Comfort

~35 CPL

Narrow lines

52px

40px

16px

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

⚠️ Hard to read: Flesch score 45/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 18 elements below WCAG AA threshold (min 1.0:1).

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

✅ Strong hierarchy: Headlines are 3.2x larger than body text.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Buy on MyFontsFlesch 45

Color Palette

6 unique colors

Dark

#212226

Other· 82.7%

#474d9c

Primary· 2.9%

#7172a1

Secondary· 2.8%

#cbcdd8

Secondary· 2.4%

#373e84

Secondary· 1%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

us-assets.i.posthog.com(4)youtube.com(2)connect.facebook.net(2)m.servedby-buysellads.com(1)googletagmanager.com(1)

Website Identity

neetcode.io

4 years old

Location detected: 🇺🇸 United Statesvia ip

Key-Systems GmbH📧 Google Workspaceen

Social Profiles

X (Twitter)LinkedIn YouTube Discord

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Last analyzed: 01 Jun 2026 at 05:38

Historical Analysis & Change Tracking