Libretexts.org Innovative OER Platform - LibreTexts

LibreTexts is an ecosystem of connected tools that empower educators to create Open Educational Resources at scale.

Libretexts.org Overview

LibreTexts is an open-access platform that provides users with free textbooks and other learning materials. The site is hosted by FASTLY – a leading content delivery network company based in the United States. With 387774 unique users per day, LibreTexts is one of the most visited educational sites on the internet. Its 3102192 page views and an estimated site value of 3350160 US dollars are a testament to the platform's reach and popularity.

As a .ORG domain, LibreTexts falls under the nonprofit organization category, indicating that the site is family-friendly, and users can access high-quality educational content without a paywall. The platform's SSL issued by Let's Encrypt indicates that it's committed to maintaining the privacy and security of its users.

Upon accessing the site, one can easily navigate the homepage, which has an overview of LibreTexts’ mission, vision, and the services it offers. The site's header includes links to the different subject areas available, such as chemistry, physics, engineering, and many others, providing users with a comprehensive list of the subjects they can explore. The site minimizes adverts, creating an optimal user experience without distractions.

The site's main content is presented in a visually appealing and easy-to-digest format. LibreTexts offers users the ability to browse textbooks and other educational resources by subject, and a search bar is available to help users locate specific topics. Users can also create an account on the site to save textbooks, create annotations, and share resources with other users.

LibreTexts invests in creating quality content, and it's evident in the consistent organization and formatting of its materials. Each subject area has multiple chapters, emphasizing different topics, concepts, and real-world applications; all sections have a clear structure that makes reading understandable and enjoyable. Additionally, LibreTexts offers users the ability to provide feedback on any resources on the platform, ensuring that the content is of high quality and accuracy.

However, according to PageSpeed Insights, the site has a score of 66, indicating that it's relatively slow and could be optimized better for faster loading speeds. Improving the site's speed rank would improve the user experience and attract more visitors to the site.

In conclusion, LibreTexts offers users an impressive range of educational resources available free of charge. Its easy-to-use and visually appealing platform make the site an excellent choice for students, teachers, and researchers alike. With continuous improvements, LibreTexts has the potential

Libretexts.org Website Safety

Overview

Last Updated: 12/26/2024

Unknown status.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/21/2024

libretexts.org is safe.

Norton ConnectSafe evaluates libretexts.org for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 12/26/2024

Unknown status.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

libretexts.org is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 11/07/2021

libretexts.org is safe.

McAfee assesses libretexts.org for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze libretexts.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 12/26/2024

libretexts.org child safety is unknown.

The WOT calculates reputation of the libretexts.org. This reputation system receives ratings from users and information from third-party sources, assesses the libretexts.org for safety features and confirms, whether libretexts.org is suitable for children.

SSL Information

SSL Checker Tool

Domain	libretexts.org
Issuer Organization	Let's Encrypt
Issuer	R10
Algorithm	RSA-SHA256
Valid form	09/12/2024
Expiration	12/11/2024
Signed	Certificate is not self signed
Additional Domains	adopt.libretexts.org awesomefiles.libretexts.org chat.libretexts.org construct.libretexts.org donate.libretexts.org go.libretexts.org harvest.libretexts.org harvestrequest.libretexts.org launchpad.libretexts.org libretexts.org officehours.libretexts.org quimica.libretexts.org register.libretexts.org static.libretexts.org statistics.libretexts.org support.libretexts.org test-newsite.libretexts.org www.libretexts.org youtube.libretexts.org zoom.libretexts.org

Libretexts.org Rank History

Alexa Rank shows how popular libretexts.org is in comparison with other sites. The most popular site has Alexa Rank equals 1. If libretexts.org has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to libretexts.org and pageviews on libretexts.org over the past 3 months.

Libretexts.org Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 13335

ASN Title: CLOUDFLARENET - Cloudflare, Inc., US

Last Update: 03/10/2024

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 13335
ASName: CLOUDFLARENET
ASHandle: AS13335
RegDate: 2010-07-14
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/autnum/13335

OrgName: Cloudflare, Inc.
OrgId: CLOUD14
Address: 101 Townsend Street
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2010-07-09
Updated: 2017-02-17
Comment: All Cloudflare abuse reporting can be done via https://www.cloudflare.com/abuse
Ref: https://rdap.arin.net/registry/entity/CLOUD14

OrgTechHandle: ADMIN2521-ARIN
OrgTechName: Admin
OrgTechPhone: +1-650-319-8930
OrgTechEmail: rir@cloudflare.com
OrgTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

OrgAbuseHandle: ABUSE2916-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-650-319-8930
OrgAbuseEmail: abuse@cloudflare.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

OrgNOCHandle: NOC11962-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-650-319-8930
OrgNOCEmail: noc@cloudflare.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RNOCHandle: NOC11962-ARIN
RNOCName: NOC
RNOCPhone: +1-650-319-8930
RNOCEmail: noc@cloudflare.com
RNOCRef: https://rdap.arin.net/registry/entity/NOC11962-ARIN

RTechHandle: ADMIN2521-ARIN
RTechName: Admin
RTechPhone: +1-650-319-8930
RTechEmail: rir@cloudflare.com
RTechRef: https://rdap.arin.net/registry/entity/ADMIN2521-ARIN

RAbuseHandle: ABUSE2916-ARIN
RAbuseName: Abuse
RAbusePhone: +1-650-319-8930
RAbuseEmail: abuse@cloudflare.com
RAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2916-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Libretexts.org Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: libretexts.org
Registry Domain ID: c2b3ddc634124809bd69ca9ba8623db2-LROR
Registrar WHOIS Server: http://whois.google.com
Registrar URL: https://domains.google.com
Updated Date: 2022-09-05T22:17:16Z
Creation Date: 2016-07-22T22:17:14Z
Registry Expiry Date: 2023-07-22T22:17:14Z
Registrar: Google LLC
Registrar IANA ID: 895
Registrar Abuse Contact Email: registrar-abuse@google.com
Registrar Abuse Contact Phone: +1.8772376466
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Contact Privacy Inc. Customer 7151571251
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: ON
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: CA
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
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Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
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Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns1.digitalocean.com
Name Server: ns2.digitalocean.com
Name Server: ns3.digitalocean.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-10-11T06:13:20Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
libretexts.org	167.99.169.234	60

Host	MX Record	Priority	TTL
libretexts.org	aspmx.l.google.com	1	300
libretexts.org	alt3.aspmx.l.google.com	10	300
libretexts.org	alt4.aspmx.l.google.com	10	300
libretexts.org	alt1.aspmx.l.google.com	5	300
libretexts.org	alt2.aspmx.l.google.com	5	300

Host	NS Record	TTL
libretexts.org	celine.ns.cloudflare.com	86400
libretexts.org	ridge.ns.cloudflare.com	86400

Host	TXT Record	TTL
libretexts.org	1password-site-verification=YDXLXEOPD5A4RIQ4DGBXTTLXAU	300
libretexts.org	MS=24EEDA32A1B64093067F80942348F46B7C53AB15	300
libretexts.org	google-site-verification=WJj7yRntxOUiLoMDLmw2GuIKx6gKRGvLqjoVp_aLUQ0	300
libretexts.org	google-site-verification=ej-DagC8sD_MaouJikcyiz-sulM4oKdtg95K_XZJLjc	300
libretexts.org	google-site-verification=zIAad45IZShT-a7Q2GnGn7XjbofS1NobaXCuldPdF58	300
libretexts.org	v=spf1 include:_spf.google.com include:mailgun.org include:spf.mailjet.com ~all	300

celine.ns.cloudflare.com
TTL: 1800
Email address: dns.cloudflare.com
Serial: 2357827417
Refresh: 10000
Retry: 2400
Expire: 604800
Minimum: 1800

Libretexts.org HTML Check

HTML Validation Tool

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

The “navigation” role is unnecessary for element “nav”.

A table row was 5 columns wide and exceeded the column count established by the first row (2).

A table row was 1 columns wide, which is less than the column count established by the first row (2).

The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.

The “contentinfo” role is unnecessary for element “footer”.

Errors

Bad value “45px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Attribute “width” not allowed on element “div” at this point.

The “width” attribute on the “table” element is obsolete. Use CSS instead.

The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.

The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.

The “border” attribute on the “table” element is obsolete. Use CSS instead.

The “height” attribute on the “td” element is obsolete. Use CSS instead.

The “center” element is obsolete. Use CSS instead.

Attribute “height” not allowed on element “tr” at this point.

The “valign” attribute on the “tr” element is obsolete. Use CSS instead.

The “width” attribute on the “td” element is obsolete. Use CSS instead.

The “align” attribute on the “h1” element is obsolete. Use CSS instead.

The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.

The “font” element is obsolete. Use CSS instead.

Element “p” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)

The “align” attribute on the “h3” element is obsolete. Use CSS instead.

Element “center” not allowed as child of element “font” in this context. (Suppressing further errors from this subtree.)

Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).

Stray end tag “div”.

Libretexts.org Desktop Performance

Last tested: 03/08/2018

Desktop Speed

77%

Leverage browser caching

Optimize images

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	29
Number of Hosts	3
Static Resources	26
JavaScript Resources	9
CSS Resources	5

Libretexts.org Mobile Insights

Last tested: 03/08/2018

Mobile Usability

96%

Size content to viewport

Mobile Speed

66%

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Optimize images

Minify JavaScript

Minify CSS

Minify HTML

Mobile Resource Breakdown

Total Resources	29
Number of Hosts	3
Static Resources	26
JavaScript Resources	9
CSS Resources	5

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Libretexts.org Innovative OER Platform - LibreTexts

LibreTexts is an ecosystem of connected tools that empower educators to create Open Educational Resources at scale.

Libretexts.org Overview

Libretexts.org Website Safety

Libretexts.org Rank History

Libretexts.org Hosting Information

Libretexts.org Domain Registration and Settings

Libretexts.org HTML Check

Libretexts.org Desktop Performance

Libretexts.org Mobile Insights

Libretexts.org Similar Audits

Libretexts.org Common Typos