pressbooks.com Website Information

Daily Unique Visits: 58,080

Daily Page Views: 348,480

Income Per Day: $697

Estimated Value: $501,840

This website is located in Canada and is using following IP address 35.182.44.9. See the complete list of popular websites hosted in Canada.

pressbooks.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website pressbooks.com is using the following name servers:

ns-1499.awsdns-59.org
ns-1738.awsdns-25.co.uk
ns-457.awsdns-57.com
ns-877.awsdns-45.net

and is probably hosted by AMAZON-02 - Amazon.com, Inc., US. See the full list of other websites hosted by AMAZON-02 - Amazon.com, Inc., US.

The highest website pressbooks.com position in Alexa rank database was 20554 and the lowest rank position was 24980. Current position of pressbooks.com in Alexa rank database is 24694.

Desktop speed score of pressbooks.com (42/100) is better than the results of 16.45% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of pressbooks.com (98/100) is better than the results of 55.61% of other sites and means that the page is mobile-friendly.

Mobile speed score of pressbooks.com (36/100) is better than the results of 14.78% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

pressbooks.com Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

pressbooks.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: PRESSBOOKS.COM
Registry Domain ID: 114267543_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucows.com
Updated Date: 2024-03-15T08:56:50Z
Creation Date: 2004-03-16T19:08:43Z
Registry Expiry Date: 2025-03-16T18:08:43Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email: domainabuse@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: NS-1499.AWSDNS-59.ORG
Name Server: NS-1738.AWSDNS-25.CO.UK
Name Server: NS-457.AWSDNS-57.COM
Name Server: NS-877.AWSDNS-45.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-22T01:00:13Z

pressbooks.com server information

Servers Location

pressbooks.com desktop page speed rank

Last tested: 2016-11-21

Desktop Speed Bad

42/100

pressbooks.com Desktop Speed Test Quick Summary

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priority - 12Leverage browser caching

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https://pressbooks.com/wp-content/plugins/lazy-load/images/1x1.trans.gif (expiration not specified)
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https://pressbooks.com/wp-content/uploads/2015/04/…sights-logo-300x71.gif (expiration not specified)
https://pressbooks.com/wp-content/uploads/2015/04/…treet-Journal-Logo.gif (expiration not specified)
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https://www.google-analytics.com/plugins/ua/ecommerce.js (60 minutes)
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priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://pressbooks.com/wp-includes/js/jquery/jquery.js?ver=1.12.4
https://pressbooks.com/wp-includes/js/jquery/jquer…grate.min.js?ver=1.4.1
https://pressbooks.com/wp-content/themes/pressbook…gation.js?ver=20120206
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https://pressbooks.com/wp-content/themes/pressbook…rap/modal.js?ver=3.0.3
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https://pressbooks.com/wp-content/plugins/lazy-loa…y.sonar.min.js?ver=0.6
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https://pressbooks.com/wp-includes/js/wp-embed.min.js?ver=4.6.1

Optimize CSS Delivery of the following:

https://pressbooks.com/wp-content/themes/pressbook…ot/style.css?ver=4.6.1
https://pressbooks.com/wp-content/themes/pressbook…tyles.css?ver=20150331
https://pressbooks.com/wp-content/themes/pressbook…tstrap-2.css?ver=4.6.1
https://netdna.bootstrapcdn.com/font-awesome/4.0.3…some.min.css?ver=4.0.3
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priority - 2Prioritize visible content

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The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 47% of the final above-the-fold content could be rendered with the full HTML response.

priority - 2Minify CSS

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priority - 2Reduce server response time

priority - 1Minify HTML

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priority - 0Minify JavaScript

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pressbooks.com Desktop Resource Breakdown

Total Resources	53
Number of Hosts	10
Static Resources	28
JavaScript Resources	17
CSS Resources	5

pressbooks.com mobile page speed rank

Last tested: 2016-11-21

Mobile Speed Bad

36/100

pressbooks.com Mobile Speed Test Quick Summary

priority - 107Optimize images

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priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

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Optimize CSS Delivery of the following:

priority - 18Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 18Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 171.1KiB (69% reduction).

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 37% of the final above-the-fold content could be rendered with the full HTML response.

priority - 3Reduce server response time

priority - 2Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 19KiB (29% reduction).

priority - 1Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 5.1KiB (17% reduction).

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priority - 0Minify JavaScript

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pressbooks.com Mobile Resource Breakdown

Total Resources	53
Number of Hosts	10
Static Resources	28
JavaScript Resources	17
CSS Resources	5

pressbooks.com mobile page usability

Last tested: 2016-11-21

Mobile Usability Good

98/100

pressbooks.com Mobile Usability Test Quick Summary

priority - 1Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="https://twitter.com/pressbooks">Twitter</a> and 4 others are close to other tap targets.

pressbooks.com HTML validation

Errors

Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.

Line: 75 Column: 1 - 72
"...</script> <link rel='https://api.w.org/' href='https://pressbooks.com/wp-json/' /> <link..."

Duplicate attribute “class”.

Line: 271 Column: - 58
"...idth="80" class="" src="https:..." Line: 284 Column: - 58
"...idth="80" class="" src="https:..." Line: 296 Column: - 58
"...idth="80" class="" src="https:..." Line: 309 Column: - 58
"...idth="80" class="" src="https:..." Line: 322 Column: - 58
"...idth="80" class="" src="https:..." Line: 335 Column: - 58
"...idth="80" class="" src="https:..." Line: 348 Column: - 58
"...idth="80" class="" src="https:..." Line: 360 Column: - 58
"...idth="80" class="" src="https:..." Line: 373 Column: - 58
"...idth="80" class="" src="https:..."

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

Line: 273 Column: 13 - 35
"... <cite><p class="source-name">Ashley..." Line: 274 Column: 10 - 33
"... <p class="source-title">Author..." Line: 276 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 286 Column: 13 - 35
"... <cite><p class="source-name">Will B..." Line: 287 Column: 10 - 33
"... <p class="source-title">Publis..." Line: 298 Column: 13 - 35
"... <cite><p class="source-name">Marsha..." Line: 299 Column: 10 - 33
"... <p class="source-title">Author..." Line: 301 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 311 Column: 13 - 35
"... <cite><p class="source-name">Ania W..." Line: 312 Column: 10 - 33
"... <p class="source-title">Managi..." Line: 314 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 324 Column: 13 - 35
"... <cite><p class="source-name">Kirk W..." Line: 325 Column: 10 - 33
"... <p class="source-title">WordPr..." Line: 327 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 337 Column: 13 - 35
"... <cite><p class="source-name">Jane F..." Line: 338 Column: 10 - 33
"... <p class="source-title">Author..." Line: 340 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 350 Column: 13 - 35
"... <cite><p class="source-name">Rob Cl..." Line: 351 Column: 10 - 33
"... <p class="source-title">Publis..." Line: 362 Column: 13 - 35
"... <cite><p class="source-name">Alexis..." Line: 363 Column: 10 - 33
"... <p class="source-title"></p> ..." Line: 365 Column: 19 - 45
"... <p class="twitter-handler">@<a hr..." Line: 375 Column: 13 - 35
"... <cite><p class="source-name">Adriel..." Line: 376 Column: 10 - 33
"... <p class="source-title">Produc..."

No “p” element in scope but a “p” end tag seen.

Line: 421 Column: 201 - 204
"..."btn-sep"></p> ..."

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

Line: 421 Column: 201 - 204
"..."btn-sep"></p> ..."

End tag “section” seen, but there were open elements.

Line: 424 Column: 6 - 15
"... </section> ..."

Unclosed element “span”.

Line: 421 Column: 179 - 200
".../a></div> <span class="btn-sep"></p> ..."

Warnings

The “banner” role is unnecessary for element “header”.

Line: 93 Column: 3 - 58
"...wrap" > <header id="masthead" class="site-header" role="banner"> <..."

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

Line: 101 Column: 4 - 71
"...div> <nav id="site-navigation" class="main-navigation" role="navigation"> <..."

The “main” role is unnecessary for element “main”.

Line: 132 Column: 3 - 53
"...> <main id="main" class="site-main-home" role="main"> ..."

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 419 Column: 6 - 53
"... <section class="content-block clear site-width"> ..."

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

Line: 443 Column: 2 - 62
"...page --> <footer id="colophon" class="site-footer" role="contentinfo"> <di..."

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pressbooks.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

pressbooks.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

PRESSBOOKS.COM Pressbooks | The open book creation platform.

pressbooks.com Website Information

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pressbooks.com Alexa Rank

pressbooks.com whois

pressbooks.com server information

Servers Location

pressbooks.com desktop page speed rank

pressbooks.com Desktop Speed Test Quick Summary

priority - 105Optimize images

Properly formatting and compressing images can save many bytes of data.

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priority - 18Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 171.1KiB (69% reduction).

priority - 12Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 2Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

priority - 2Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 19KiB (29% reduction).

priority - 2Reduce server response time

priority - 1Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 5.1KiB (17% reduction).

priority - 0Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 2.5KiB (37% reduction).

pressbooks.com Desktop Resource Breakdown

pressbooks.com mobile page speed rank

pressbooks.com Mobile Speed Test Quick Summary

priority - 107Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 1MiB (60% reduction).

priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 18Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 18Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 171.1KiB (69% reduction).

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

priority - 3Reduce server response time

priority - 2Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 19KiB (29% reduction).

priority - 1Minify HTML

Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.

Minify HTML for the following resources to reduce their size by 5.1KiB (17% reduction).

priority - 0Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 2.5KiB (37% reduction).

pressbooks.com Mobile Resource Breakdown

pressbooks.com mobile page usability

pressbooks.com Mobile Usability Test Quick Summary

priority - 1Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

pressbooks.com HTML validation

Errors

Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.

Duplicate attribute “class”.

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

No “p” element in scope but a “p” end tag seen.

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

End tag “section” seen, but there were open elements.

Unclosed element “span”.

Warnings

The “banner” role is unnecessary for element “header”.

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