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cp-algorithms.com

https://cp-algorithms.com· First analyzed 24 May 2026· Updated 24 May 2026
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cp-algorithms.com
Desktop screenshot of cp-algorithms.com
Mobile screenshot of cp-algorithms.com
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

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

Performance

100

Core Web Vitals

Weight

First Contentful Paint
383 ms10%
Speed Index
498 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
86 KB
28 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Google Cloud Platform
CDN
Fastly

Technology Stack

6 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Google Tag Manager

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

SEO Analysis

B70/100
19
6
0
Meta Tags13/15
Content12/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
cp-algorithms.comcp-algorithms.com

Main Page - Algorithms for Competitive Programming

The goal of this project is to translate the wonderful resource http://e-maxx.ru/algo which provides descriptions of many algorithms and data structures espe...

Description truncated.
Title Length50 chars

Recommended: 50-60 chars (~310px / 580px)

Description Length329 chars

Recommended: 120-160 chars

Issues (0)

    6 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    169 URLs

    robots.txt

    Local SEO

    Local Search Readiness

    5/100
    Poor
    2 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

    F36/100
    Bot Access
    20/25
    Machine Read.
    10/25
    Schema Data
    0/25
    Citation
    6/25

    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
    nav
    Text ratio:7%
    Words:1,444
    Token eff.:Optimal
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary877w
    Descriptive Headingsavg 2w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (11)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    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.
    A
    88/100
    15
    Passed
    1
    Critical
    0
    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
    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
    7/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

    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.
    79/100
    A+
    9 mg
    CO₂e / view
    85.5 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    10 mg
    vs
    Returning (cached)
    5 mg
    Annual (10K/mo)
    1.0 kg
    Emission Segments
    Data Center
    <0.001 g
    Network
    3 mg
    Device
    6 mg
    Resource Breakdown
    JavaScript
    46.3 KB
    CSS
    21.8 KB
    Fonts
    2.5 KB
    HTML
    13.0 KB
    Other
    1.9 KB
    Green Hosting Verified
    Quis Lab (Plushie App)
    GWF Verified
    2 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    36%Critical
    Interactive

    HTTPS

    No WAF

    79d

    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

    13.05.2026

    Valid Until

    11.08.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (20)

    feedback.ost.satyajeettambe.combaws.cloud2it0.comppp2.bte.com.auwaillet.nocastudio.com.brgabrielsanabria.comcp-algorithms.comrajascheetham.megapos.store+12 more

    SHA-256 Fingerprint

    A2:89:A4:ED:34:59:45:C9:5D:05:AC:30:22:78:72:7F:96:DD:36:C4...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    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
    12978
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    0

    SPF
    DKIM
    DMARC

    Domain Information

    cp-algorithms.com

    Domain Age
    7y 11m

    Created

    05.06.2018

    Expires

    05.06.2028

    Last Updated

    15.05.2026

    Registrar

    NameCheap, Inc.

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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
    77/100
    Mobile Friendly1 breakpoint
    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

    -apple-system

    WCAG Partial
    79/100
    Readability
    /30
    24/30

    18px · LH 1.60

    Hierarchy
    /20
    16/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    18/25

    4.2:1 min contrast

    Performance
    /25
    21/25

    System fonts

    Heading Font

    -apple-system

    Sans35px

    Body Font

    -apple-system

    Sans18px

    Contrast Ratio

    4.2:1

    5 issues

    Reading Comfort

    ~39 CPL

    Narrow lines
    35px
    h1
    28px
    h2
    22px
    h3
    18px
    p

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

    ✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 5/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 4.2:1).

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

    ✅ Strong hierarchy: Headlines are 2.0x larger than body text.

    GGoogle FontsFluid Type (rem)Flesch 5

    Color Palette

    11 unique colors
    3.57:1 AA Large Light
    #ffffff
    Background· 77.6%
    #868698
    Secondary· 1.1%
    #7777a7
    Primary· 4.6%
    #fffac3
    Accent· 3.9%
    #646487
    Secondary· 1.7%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    11 Resources

    7
    Scripts
    4
    Styles
    1
    Async
    0
    Defer

    Top Script Sources

    assets(2)javascript(2)googletagmanager.com(1)cdnjs.cloudflare.com(1)unpkg.com(1)

    Website Identity

    cp-algorithms.com

    7 years old
    Location detected: 🇺🇸 United Statesvia ip
    NameCheap, Inc.en

    Social Profiles

    GitHubDiscord

    Sponsored

    Last analyzed: 24 May 2026 at 09:53

    Historical Analysis & Change Tracking