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codecrafters.io

codecrafters.io had about 227.62K visits in September 2026, down 19.93% from August; most traffic is direct.

CodeCrafters | The Hardest Programming Challenges on the Internet

Website traffic

How much traffic does codecrafters.io get?

227.62K

-19.93%MoMEstimated monthly visits
789331.06K220.71K110.35K0
Global rank

156,453

Country rank · United States

109,579

Category rank · Programming and Developer Software

1,983

Average visit duration

02:34

Pages per visit

4.38

Bounce rate

44.95%

Domain age

6.9 years

Search share

25.8%

Sources

Where does codecrafters.io's traffic come from?

  • Direct
    53.2%
  • Search
    25.8%
  • Social
    10.9%
  • Referrals
    5.2%
  • Generative AI
    3.0%
  • Email
    1.7%
  • Paid search
    0.1%
  • Display ads
    0.1%
  • Other
    0.0%

Regions

Which countries visit codecrafters.io?

  • United States
    22.6%
  • India
    19.3%
  • Kenya
    4.6%
  • Germany
    4.5%
  • United Kingdom
    3.7%

See how codecrafters.io compares with the most visited websites in the world, the fastest growing websites and sites gaining organic search traffic.

Search visibility

What keywords send traffic to codecrafters.io?

Keyword samples

Estimated visitsMonthly searchesVisits ÷ searches
  1. codecraftersBRAND16.6K15.11K110%
  2. code craftersBRAND1.88K1.79K105%
  3. codecrafterBRAND1.26K1.86K68%
  4. build your own x74016.26K5%
  5. codecrafters-ioBRAND29035083%

Keyword rankings

Keyword rankings

Example · google.comUnited States · English

86.4M

Search estimate

New 1 · Up 2

Ranking keywords
12,400
Landing pages
4
Search competitors
4
AI citations
2
PositionEstimated visits
  1. google#142M
  2. gmail#118.2M
  3. google maps#19.4M
  4. google drive#14.1M

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Baidu rank

Site profile

What does codecrafters.io show publicly?

  • HTTP 200
  • Email authentication
  • Hosting ASN
HTTP
200
Page size
245.8 KiB
Hosting
AMAZON-02 · AS16509
Email authentication
SPF · DMARC none
TLS
TLSv1.3 · 69 days
Page and SEOSchema 2
Title
CodeCrafters | The Hardest Programming Challenges on the Internet
Description
Build your own Redis, Git, SQLite, and more from scratch. Advanced challenges designed for experienced engineers, used by developers at Google, OpenAI, and Vercel.
Cross-origin redirect
No
Word count
1,397
Internal / external links
25 / 6
Canonical
https://codecrafters.io/
Language
en
H1 / H2
1 / 3
Images missing alt
32 / 132
Schema
Organization · Person
OG / Twitter
OG · Twitter
Technology and tracking1 tracking
Technology clues
Next.js · Vercel · React
Tracking clues
Google Tag Manager
Social links
github.com · github.com · twitter.com · linkedin.com
Server
Vercel
Security headers
4 / 6
HSTS / CSP
HSTS
Email and DNS securitySet
SPF
Set
DMARC
Set · none
DKIM selectors
google · s1 · s2
Mail stack
Google Workspace
IPv6
No AAAA
Site verification TXT
Google · Stripe
SOA
ns1.digitalocean.com
NS
ns3.digitalocean.com. · ns2.digitalocean.com. · ns1.digitalocean.com.
MX
1 aspmx.l.google.com. · 5 alt1.aspmx.l.google.com. · 5 alt2.aspmx.l.google.com. · 2 more
Hosting and networkAS16509
A
216.150.1.1
Hosting ASN
AS16509 · 216.150.1.0/24
Hosting organization
AMAZON-02 - Amazon.com, Inc.
Hosting country
US
BGP announcement
Yes
TLS
TLSv1.3 · Verified
Certificate issuer
YR2
Certificate remaining
69 days
Certificate SAN
DNS:codecrafters.io
robots and AI crawlingHTTP 200
Robots.txt
200
Global Disallow /
No
Sitemap
URL set · 32
AI explicitly disallowed
0
AI explicitly allowed
16
Well-known public paths
Present / checked
0 / 5

Website information

When was codecrafters.io registered?

Domain
codecrafters.io
Registration status
Domain registered
Registered
2019-11-12
Registrar
Gandi SAS
Expires
2027-11-12
Domain age
6.9 years
DNSSEC
No
Registry status
active

Similar sites

What sites are similar to codecrafters.io?

What's in this report

The report starts with a whole-site monthly visit estimate. Search visibility and public site facts follow when they exist.

  • Website traffic is a modeled whole-site estimate, with a source, observation period and confidence.
  • Search visibility is ranking keywords and search traffic, listed separately from whole-site visits.
  • Missing or partial values stay marked in the report.