corwin.com
Corwin | Books and Professional Development for Teachers and Educators
Last scanned Aug 24, 2026, 1:23 PM
Overall score
Excellent
Summary
Corwin publishes practical, research-based books, and provides events and customized professional learning services for schools and districts. This website uses jQuery. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
Corwin publishes practical, research-based books, and provides events and customized professional learning services for schools and districts.
Top issues to fix
6 issues found
2 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.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
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.
2 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
4 issue(s) found
Performance
521 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Corwin publishes practical, research-based books, and provides events and customized professional learning services for schools and districts.
Meta tags
- Title
- Corwin | Books and Professional Development for Teachers and Educators
- Description
- Corwin publishes practical, research-based books, and provides events and customized professional learning services for schools and districts.
- Canonical
- https://www.corwin.com
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width
- 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
- *.corwin.com
- Valid from
- Nov 3, 2025
- Valid to
- Dec 4, 2026
- Days until expiry
- 101
- SAN domains
- *.corwin.com, corwin.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 9 · H3 3
Links
36 internal · 22 external · 2 broken
Images
40 total · 0 missing alt
Scripts / Styles
50 scripts · 11 stylesheets
JS / CSS size
70.1 KB · 51.6 KB
Page size
102 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://corwin.com
- Final URL
- https://www.corwin.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 519 ms
- HTML size
- 102 KB
- Redirect chain
- https://corwin.com → https://www.corwin.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does corwin.com use?
- corwin.com is built with Bootstrap, jQuery.
- Is corwin.com secure (HTTPS)?
- Yes. corwin.com uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Dec 4, 2026.
- Who hosts corwin.com?
- Hosting provider information for corwin.com is not available yet.
- What is corwin.com's SEO score?
- corwin.com scored 75/100 for SEO in the latest analysis (fair).
- What is corwin.com's overall website score?
- corwin.com has an overall SiteGraph score of 93/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card