oreilly.com
O'Reilly Media - Technology and Business Training
Last scanned Jul 18, 2026, 8:49 PM
Overall score
Excellent
Top issues to fix
3 issues found
3 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
Summary
The O'Reilly learning platform is a skill-building platform that equips individuals and teams with the resources that drive business outcomes. This website uses WordPress. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (80/100). Top issue: robots.txt not found.
SEO
2 issue(s) found
Performance
2.29 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
O'Reilly Media
The O'Reilly learning platform is a skill-building platform that equips individuals and teams with the resources that drive business outcomes. We help tech teams stay ahead. O'Reilly empowers professionals, teams, enterprises, academic institutions, and government organizations to forge a brighter future with guidance from the pioneers who shape today's world. For over 45 years, we've built a renowned community of expert active practitioners with a knack for teaching, and we've cultivated an inherent ability to anticipate technological and business developments by tracking emerging trends. O'Reilly uniquely offers a comprehensive online learning solution that provides insights from these visionary experts and nearly 200 respected providers. We cater to the needs of all learners with diverse content formats and coverage across an abundance of topic areas in all skill levels. And we leverage AI and ML for a truly personalized experience that drives productivity and fosters continuous learning. These distinct tools combined with our unmatched content make O'Reilly the clear choice to acquire in-demand skills, drive career growth, and stay ahead in a rapidly changing world.
- Founded
- Jan 1, 1978
- Employees
- 201-500
Contact
Email, phone, and address published on this site's own pages.
- support@oreilly.com
- Address
- 141 Stony Circle, Suite 195, Sebastopol, CA, 95472, US
Meta tags
- Title
- O'Reilly Media - Technology and Business Training
- Description
- Build the skills your teams need. Give them the O'Reilly learning platform and equip them with the resources that drive business outcomes.
- Canonical
- https://www.oreilly.com/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- shop.oreilly.com
- Valid from
- Apr 28, 2026
- Valid to
- Nov 12, 2026
- Days until expiry
- 117
- SAN domains
- shop.oreilly.com, akamaicovers.oreilly.com, anz.oreilly.review, api.oreilly.com, api.oreilly.review, conferences.oreilly.com, go.oreilly.com, go.oreilly.review, images.oreilly.com, learning.oreilly.com, learning.oreilly.review, members.oreilly.review, oreil.ly, oreilly.hk, oreilly.id, oreillylearning.in, orl.ly, pcv-gcs.oreilly.review, staging.atlas.oreilly.com, wptest.oreilly.com, www.oreilly.com, www.oreilly.review
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 6 cookie(s) observed
Content & assets
Headings
H1 1 · H2 17 · H3 15
Links
165 internal · 14 external · 0 broken
Images
28 total · 1 missing alt
Scripts / Styles
47 scripts · 4 stylesheets
JS / CSS size
808 KB · 358 KB
Page size
297 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://oreilly.com
- Final URL
- https://www.oreilly.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 2.29 s
- HTML size
- 297 KB
- Redirect chain
- https://oreilly.com → https://www.oreilly.com/
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Frequently asked questions
- What technology does oreilly.com use?
- oreilly.com is built with WordPress, jQuery, Google Analytics, Meta Pixel, Apache.
- Is oreilly.com secure (HTTPS)?
- Yes. oreilly.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Nov 12, 2026.
- Who hosts oreilly.com?
- Hosting provider information for oreilly.com is not available yet.
- What is oreilly.com's SEO score?
- oreilly.com scored 90/100 for SEO in the latest analysis (excellent).
- What is oreilly.com's overall website score?
- oreilly.com has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- What company operates oreilly.com?
- oreilly.com is operated by O'Reilly Media. The O'Reilly learning platform is a skill-building platform that equips individuals and teams with the resources that drive business outcomes. We help tech teams stay ahead. O'Reilly empowers professionals, teams, enterprises, academic institutions, and government organizations to forge a brighter future with guidance from the pioneers who shape today's world. For over 45 years, we've built a renowned community of expert active practitioners with a knack for teaching, and we've cultivated an inherent ability to anticipate technological and business developments by tracking emerging trends. O'Reilly uniquely offers a comprehensive online learning solution that provides insights from these visionary experts and nearly 200 respected providers. We cater to the needs of all learners with diverse content formats and coverage across an abundance of topic areas in all skill levels. And we leverage AI and ML for a truly personalized experience that drives productivity and fosters continuous learning. These distinct tools combined with our unmatched content make O'Reilly the clear choice to acquire in-demand skills, drive career growth, and stay ahead in a rapidly changing world.
OpenGraph & Twitter Card
OpenGraph
Twitter Card