What technology does heinemann.com use?

heinemann.com is built with jQuery, Nginx.

Is heinemann.com secure (HTTPS)?

Yes. heinemann.com uses TLS 1.3 with a certificate issued by GlobalSign nv-sa, valid until Sep 6, 2026.

Who hosts heinemann.com?

Hosting provider information for heinemann.com is not available yet.

What is heinemann.com's SEO score?

heinemann.com scored 70/100 for SEO in the latest analysis (fair).

What is heinemann.com's overall website score?

heinemann.com has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.

heinemann.com

Heinemann | Publisher of professional resources and provider of educational services for teachers

Last scanned Aug 24, 2026, 1:23 PM

Overall score

Fair

Summary

Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college. This website uses Nginx. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (70/100) and performance good (80/100). Top issue: Title longer than 60 characters.

Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college.

Top issues to fix

11 issues found · 1 high priority

TLS certificate expires in 12 days
Security
Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.

+5 more issues — details in the sections below.

SEO

5 issue(s) found

Performance

3.17 s

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college.

YouTube YouTube LinkedIn Facebook Instagram

Contact

Email, phone, and address published on this site's own pages.

Email: custserv@heinemann.com

Meta tags

Title: Heinemann | Publisher of professional resources and provider of educational services for teachers
Description: Heinemann is a publisher of professional resources and a provider of educational services for teachers and educators from kindergarten through college.
Canonical
Language: en
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta
Manifest: https://www.heinemann.com/manifest.json

Technologies

Detected frameworks, languages, and tools.

jQuery Nginx

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: GlobalSign nv-sa
Subject: imperva.com
Valid from: Jun 8, 2026
Valid to: Sep 6, 2026
Days until expiry: 12
SAN domains: *.unitsofstudy.com, pre.channelone.com, *.gomathacademy.com, digital.fountasandpinnell.com, analytics.gogetwaggle.com, www.gogetwaggle.com, fpdms.heinemann.com, *.edr00.slkcut01.nwea.org, cert-staging.hmhco.com, heinemann.com, searchit.heinemann.com, *.pilot.listeningtolearn.com, *.prod.webpr.heinemann.com, authors.heinemann.com, demo-resources.fountasandpinnell.com, *.perf.nwea.org, fandpleveledbooks.com, instruct.gogetwaggle.com, pilot-qa.listeningtolearn.com, ak-assess-qa01.state.nwea.org, *.cert.webnp.hmhco.com, gomathacademy.com, hmhbooks.com, www.mathsolutions.com, practice-cert.gogetwaggle.com, hmhco.com, onlinepd.heinemann.com, *.hrw.com, fountasandpinnell.com, *.heinemann.com, fpblog.fountasandpinnell.com, *.int.tsg.hmhco.com, mosaic.heinemann.com, *.cert.hmhco.com, *.listeningtolearn.com, *.ep.hmhpub.com, *.hmhbooks.com, *.cms.nwea.io, *.nwea.us, access.auth.nwea.org, www.heinemann.com, *.mapnwea.org, sample.heinemann.com, *.cert.webnp.heinemann.com, *.fountasandpinnell.com, *.nwea.org, *.pilot-qa.listeningtolearn.com, gogetwaggle.com, securedirectsync.gogetwaggle.com, myproducts.heinemann.com, *.cert.ips-nonprod.hmhco.com, prod-staging.hmhco.com, *.thinkcentral.com, fountasandpinnell.heinemann.com, digital-fountasandpinnell.heinemann.com, *.ptldor02.nwea.org, papi.hmhco.com, *.demo.heinemann.com, resources-fountasandpinnell.heinemann.com, cert.hmhco.com, cs41sf.hmhco.com, hapi.hmhco.com, fandpleveledbooks.heinemann.com, *.gogetwaggle.com, resources.fountasandpinnell.com, *.cert.heinemann.com, blog.heinemann.com, channelone.com, *.cms-dev.nwea.org, analytics-cert.gogetwaggle.com, *.cert.mapnwea.org, *.regieroutman.com, imperva.com, na49sf.hmhco.com, pilot.listeningtolearn.com, instruct-cert.gogetwaggle.com, practice.gogetwaggle.com, *.tgds.hmhco.com, regieroutman.com, *.mathsolutions.com, *.fandpleveledbooks.com, cert-waf.hmhco.com, ltl.heinemann.com, *.channelone.com, *.hmhco.com, listeningtolearn.com, *.cert.nwea.org, *.auth.perf.nwea.org, thinkcentral.com, mathsolutions.com, *.hmhpub.com, *.prod.ips-prod.hmhco.com, pdhandouts.heinemann.com

Security headers

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

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 1 · H2 5 · H3 3

Links

72 internal · 10 external · 20 broken

Images

38 total · 0 missing alt

Scripts / Styles

29 scripts · 13 stylesheets

JS / CSS size

10.2 KB · 2.4 KB

Page size

73.9 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
Missing canonical link
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://heinemann.com
Final URL: https://www.heinemann.com/
HTTP status: 200
HTTP version: HTTP/2
Response time: 3.16 s
HTML size: 73.9 KB
Redirect chain: https://heinemann.com → https://www.heinemann.com/

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