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docker.com

Docker: Accelerated Container Application Development

Last scanned Jul 29, 2026, 11:00 AM · 21 views

92

Overall score

Excellent

Summary

Docker is a platform designed to help developers build, share, and run container applications. This website uses WordPress behind Fastly CDN. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: robots.txt not found.

Docker is a platform designed to help developers build, share, and run container applications. We handle the tedious setup, so you can focus on the code.

Top issues to fix

5 issues found · 1 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • TLS certificate expires in 30 days

    Security

    Renew soon or enable auto-renewal to avoid a browser-warning outage.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 20 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

90

SEO

2 issue(s) found

90

Performance

20 ms

90

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

+1 overall since Jul 15, 2026

Overall
92
SEO
90
Security
90
Performance
90
Accessibility
100

Organization

Company details published in this site's own structured data.

Docker is a platform designed to help developers build, share, and run container applications. We handle the tedious setup, so you can focus on the code.

X (Twitter)LinkedInInstagramYouTubeFacebook

Meta tags

Title
Docker: Accelerated Container Application Development
Description
Docker is a platform designed to help developers build, share, and run container applications. We handle the tedious setup, so you can focus on the code.
Canonical
https://www.docker.com/
Language
en-US
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
follow, index, max-snippet:-1, max-video-preview:-1, max-image-preview:large
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Docker: Accelerated Container Application Development
og:description
Docker is a platform designed to help developers build, share, and run container applications. We handle the tedious setup, so you can focus on the code.
og:type
website
og:url
https://www.docker.com/

Twitter Card

twitter:card
summary_large_image
twitter:title
Docker: Accelerated Container Application Development
twitter:description
Docker is a platform designed to help developers build, share, and run container applications. We handle the tedious setup, so you can focus on the code.

Technologies

Detected frameworks, languages, and tools.

WordPressNginx

Hosting & CDN

Hosting provider
—
CDN provider
Fastly
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
docker.com
Valid from
May 31, 2026
Valid to
Aug 29, 2026
Days until expiry
30
SAN domains
docker.com, www.docker.com

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 15 · H3 6

Links

60 internal · 20 external · 20 broken

Images

7 total · 0 missing alt

Scripts / Styles

62 scripts · 8 stylesheets

JS / CSS size

89.1 KB · 85.0 KB

Page size

335 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://docker.com
Final URL
https://www.docker.com/
HTTP status
200
HTTP version
HTTP/2
Response time
14 ms
HTML size
335 KB
Redirect chain
https://docker.com → https://www.docker.com/

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Frequently asked questions

What technology does docker.com use?
docker.com is built with WordPress, Nginx.
Is docker.com secure (HTTPS)?
Yes. docker.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 29, 2026.
Who hosts docker.com?
Hosting provider information for docker.com is not available yet.
What is docker.com's SEO score?
docker.com scored 90/100 for SEO in the latest analysis (excellent).
What is docker.com's overall website score?
docker.com has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
Has docker.com's score changed over time?
docker.com's overall score has improved by 1 point (from 91 to 92) since Jul 15, 2026.