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topcoder.com

https://topcoder.com· First analyzed 25 Apr 2026· Updated 25 Apr 2026
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topcoder.com
Desktop screenshot of topcoder.com
Mobile screenshot of topcoder.com
Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

13.216.25.9

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Ashburn, United States

ASN

AS14618

Organization

AWS EC2 (us-east-1)

Server

Nginx

Nameservers

ns-1435.awsdns-51.org.ns-1916.awsdns-47.co.uk.ns-32.awsdns-04.com.ns-677.awsdns-20.net.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
845 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
590 KB
64 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Decoupled
Frontend
Framework
Next.js
API
Data Source
Headless CMS
Contentful
Infrastructure
Platform
Netlify

Progressive Web App

Web ManifestApple Touch IconTheme Color

Detected API Sources

https://images.ctfassets.net/x...https://images.ctfassets.net/x...

Technology Stack

5 Technologies Detected

Frameworks

1
React

Meta Frameworks

1
Next.js

Other

1
D3.js

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D51/100
12
10
1
Meta Tags4/15
Content10/12
Headings5/8
Technical9/21
E-E-A-T0/7
Images4/7
Links3/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
T
topcoder.comtopcoder.com

Home | Topcoder

No description available for this page.

Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

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

11 issues found

Upgrade to view details

Local SEO

Local Search Readiness

1/100
Poor
16 2

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

Sponsored

AI & LLM Readiness

D41/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
10/25

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
header/footer
Text ratio:3%
Words:724
Token eff.:Optimal
Sections/1K:8.3
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary36w
Descriptive Headingsavg 4.3w
Canonical URL
Open Graph2/3
Twitter Card1/3
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.
B
78/100
11
Passed
4
Critical
1
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
12/20
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
9/15
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.
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.
70/100
A
60 mg
CO₂e / view
589.9 KB
Page Weight
80%
Cleaner Than
New Visitor
68 mg
vs
Returning (cached)
34 mg
Annual (10K/mo)
7.2 kg
Emission Segments
Data Center
3 mg
Network
18 mg
Device
39 mg
Resource Breakdown
JavaScript
415.7 KB
Images
11.3 KB
CSS
40.9 KB
Fonts
93.3 KB
HTML
20.9 KB
Other
7.9 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
2 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A+

Security Score

100%Excellent
Static / Informational

HTTPS

No WAF

237d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

19.11.2025

Valid Until

18.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.topcoder.comtopcoder.com

SHA-256 Fingerprint

42:B4:8D:E5:DF:C7:23:7C:48:2A:73:C9:54:AB:46:C7:DB:69:08:90...

Upgrade to view header details

HTTP Headers

Developer Console

age
744411
cache-control
🟡 0s(public,max-age=0,must-revalidate)
cache-status
"Netlify Edge"; hit
content-encoding
⚡ Brotli(br)
content-length
21072
content-security-policy
frame-ancestors 'self' https://app.contentful.com https://*....
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

topcoder-com.mail.protection.outlook.com

Domain Information

topcoder.com

Domain Age
27y 4m

Created

30.12.1998

Expires

30.12.2026

Last Updated

25.11.2025

Registrar

Amazon Registrar, Inc.

DNSSEC
Not Enabled

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
72/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Figtree + NunitoSans_10pt

WCAG Partial
70/100
Readability
/30
22/30

18px · LH 1.40

Hierarchy
/20
13/20

2.67x ratio

WCAG
/25
17/25

1:1 min contrast

Performance
/25
18/25

2 fonts · 4 req

Heading Font

Figtree

Sans48px

Body Font

NunitoSans_10pt

Sans18px

Contrast Ratio

1:1

7 issues

Reading Comfort

~33 CPL

Narrow lines
48px
h1
42px
h2
18px
p

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

✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 1/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 7 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 3 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

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

Buy on MyFontsFlesch 1

Color Palette

8 unique colors
9.71:1 AAA Light
#ffffff
Primary· 13.500000000000002%
#48424d
Secondary· 6.2%
#0e1728
Secondary· 38.99999999999999%
#e9edf0
Secondary· 13.299999999999999%
#080a13
Secondary· 9.3%
#452957
Secondary· 7.7%
#301c25
Secondary· 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

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Scripts & Styles

19 Resources

17
Scripts
2
Styles
4
Async
13
Defer

Top Script Sources

local(14)cdn.us.heap-api.com(2)uni-nav.topcoder.com(1)

Website Identity

topcoder.com

27 years old
Location detected: 🇺🇸 United Statesvia ip
Amazon Registrar, Inc.📧 Microsoft 365

Sponsored

Last analyzed: 25 Apr 2026 at 21:39

Historical Analysis & Change Tracking