hotcrp.com

https://hotcrp.com· First analyzed 28 May 2026· Updated 28 May 2026

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hotcrp.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

54.84.184.246

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Nginx

Nameservers

ns-1993.awsdns-57.co.uk.ns-302.awsdns-37.com.ns-748.awsdns-29.net.ns-1034.awsdns-01.org.

Performance

Core Web Vitals

Weight

First Contentful Paint

886 ms10%

Speed Index

1.2 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

82 KB

5 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

3 Technologies Detected

Libraries

jQueryv3.7.1

CSS Frameworks

Tailwind CSS

Web Servers

Nginxv1.28.1

SEO Analysis

D52/100

Meta Tags4/15

Content12/12

Headings7/8

Technical12/25

E-E-A-T0/7

Images0/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

hotcrp.comhotcrp.com

HotCRP.com

No description available for this page.

Title Length10 chars

Recommended: 50-60 chars (~62px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

9 issues found

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Crawlability

Sitemap

robots.txt

6 rules

Local SEO

Local Search Readiness

5/100

Poor

2 13 2

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

D40/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

7/25

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:30%

Words:590

Token eff.:Optimal

Sections/1K:6.8

Structured Data

No Schema

Citation Readiness

Opening Summary32w

Descriptive Headingsavg 1.8w

Canonical URL

Open Graph0/3

Twitter Card0/3

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.

67/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

15/20

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

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.

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.

76/100

A+

8 mg

CO₂e / view

81.9 KB

Page Weight

95%

Cleaner Than

New Visitor

10 mg

Returning (cached)

5 mg

Annual (10K/mo)

996 g

Emission Segments

Data Center

<0.001 g

Network

2 mg

Device

5 mg

Resource Breakdown

JavaScript

55.2 KB

CSS

20.6 KB

HTML

6.1 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

173d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

SSL Corporation

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.10.2025

Valid Until

17.11.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

lcdf.org*.hotcrp.com*.lcdf.org*.usenix.hotcrp.comhotcrp.com

SHA-256 Fingerprint

1F:D6:3D:33:7D:86:09:BF:89:4E:F2:F7:43:F5:53:AE:98:63:AE:33...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Thu, 28 May 2026 13:25:28 GMT

server

nginx/1.28.1

strict-transport-security

max-age=300; includeSubDomains; preload

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mail.hotcrp.com

Domain Information

hotcrp.com

Domain Age

12y 3m

Created

13.02.2014

Expires

13.02.2029

Last Updated

30.11.2023

Registrar

pair Networks, Inc. d/b/a pair Domains

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

58/100

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.

Viewport

width=device-width, initial-scale=1

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Helvetica Neue

WCAG Partial

71/100

Readability

/30

18/30

15px · LH 1.35

Hierarchy

/20

16/20

2.4x ratio

WCAG

/25

17/25

2.22:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Helvetica Neue

Sans35px

Body Font

Helvetica Neue

Sans15px

Contrast Ratio

2.22:1

5 issues

Reading Comfort

~41 CPL

Narrow lines

35px

21px

18px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.35). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 26/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 2.2:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.4x larger than body text.

Flesch 27

Color Palette

5 unique colors

Light

#aeb3aa

Other· 5.5%

#dce4e7

Secondary· 58.9%

#eff3f6

Primary· 21.899999999999995%

#fccece

Accent· 8.2%

#ae7885

Secondary· 5.6%

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Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)code.jquery.com(1)

Website Identity

hotcrp.com

ekohler@gmail.com

12 years old

Location detected: 🇺🇸 United Statesvia ip

pair Networks, Inc. d/b/a pair Domainsen

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Last analyzed: 28 May 2026 at 13:25

Historical Analysis & Change Tracking