GITBOOK.IO GitBook – Knowledge management for technical teams

gitbook.io Website Information

Daily Unique Visits: 1,363,029

Daily Page Views: 10,904,232

Income Per Day: $10,904

Estimated Value: $11,776,320

gitbook.io is registered under .IO top-level domain. Please check other sites in .IO zone.

No name server records were found.

and is probably hosted by CLOUDFLARENET - Cloudflare, Inc., US. See the full list of other websites hosted by CLOUDFLARENET - Cloudflare, Inc., US.

The highest website gitbook.io position in Alexa rank database was 396 and the lowest rank position was 850328. Current position of gitbook.io in Alexa rank database is 1118.

Desktop speed score of gitbook.io (56/100) is better than the results of 30.56% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of gitbook.io (75/100) is better than the results of 23.63% of other sites and means that the page is not mobile-friendly.

Mobile speed score of gitbook.io (66/100) is better than the results of 68.49% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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gitbook.io 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.


gitbook.io 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: gitbook.io
Registry Domain ID: a61b28c3828044e7b26399ff4a462c5d-DONUTS
Registrar WHOIS Server: http://whois.cloudflare.com
Registrar URL: http://cloudflare.com
Updated Date: 2022-03-10T21:13:28Z
Creation Date: 2014-03-30T06:09:09Z
Registry Expiry Date: 2023-03-30T06:09:09Z
Registrar: Cloudflare, Inc
Registrar IANA ID: 1910
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: DATA REDACTED
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: California
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
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
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
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
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
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: hugh.ns.cloudflare.com
Name Server: dahlia.ns.cloudflare.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-05-24T00:49:21Z

gitbook.io server information

Servers Location

gitbook.io desktop page speed rank

Last tested: 2018-04-06


Desktop Speed Bad
56/100

gitbook.io Desktop Speed Test Quick Summary


priority - 73Optimize images

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

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priority - 9Leverage 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:

https://www.google-analytics.com/analytics.js (2 hours)
https://legacy.gitbook.com/assets/fonts/socicon/socicon.css?version=20.0.1 (4 hours)
https://legacy.gitbook.com/assets/images/editor/preview_home.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/djangogirls.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/duckduckgo.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/gdg.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/icon_clock.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/icon_laptop.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/icon_team.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/results_left.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/results_main.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/results_right.png (4 hours)
https://legacy.gitbook.com/assets/images/homepage/tessel.png (4 hours)
https://legacy.gitbook.com/assets/images/templates/api.png (4 hours)
https://legacy.gitbook.com/assets/images/templates/base.png (4 hours)
https://legacy.gitbook.com/assets/images/templates/faq.png (4 hours)
https://legacy.gitbook.com/assets/js/Homepage.js?version=20.0.1 (4 hours)
https://legacy.gitbook.com/assets/js/vendor.js?version=20.0.1 (4 hours)
https://legacy.gitbook.com/assets/style.css?version=20.0.1 (4 hours)

priority - 4Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://legacy.gitbook.com/assets/style.css?version=20.0.1

priority - 0Reduce server response time

gitbook.io Desktop Resource Breakdown

Total Resources27
Number of Hosts3
Static Resources19
JavaScript Resources3
CSS Resources2

gitbook.io mobile page speed rank

Last tested: 2018-03-26


Mobile Speed Medium
66/100

gitbook.io Mobile Speed Test Quick Summary


priority - 23Optimize images

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

Optimize the following images to reduce their size by 219.8KiB (21% reduction).

Compressing https://www.gitbook.com/assets/images/editor/preview_home.png could save 160.2KiB (22% reduction).
Compressing https://www.gitbook.com/assets/images/homepage/results_main.png could save 21.4KiB (19% reduction).
Compressing https://www.gitbook.com/assets/images/homepage/results_left.png could save 19.5KiB (18% reduction).
Compressing https://www.gitbook.com/assets/images/homepage/results_right.png could save 14.2KiB (19% reduction).
Compressing https://www.gitbook.com/assets/images/templates/api.png could save 1.7KiB (43% reduction).
Compressing https://www.gitbook.com/assets/images/templates/base.png could save 1.4KiB (44% reduction).
Compressing https://www.gitbook.com/assets/images/templates/faq.png could save 1.2KiB (39% reduction).
Compressing https://www.gitbook.com/assets/images/homepage/icon_clock.png could save 287B (11% reduction).

priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://www.gitbook.com/assets/style.css?version=19.7.61

priority - 14Leverage 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:

https://www.google-analytics.com/analytics.js (2 hours)
https://www.gitbook.com/assets/fonts/socicon/socicon.css?version=19.7.61 (4 hours)
https://www.gitbook.com/assets/images/editor/preview_home.png (4 hours)
https://www.gitbook.com/assets/images/homepage/djangogirls.png (4 hours)
https://www.gitbook.com/assets/images/homepage/duckduckgo.png (4 hours)
https://www.gitbook.com/assets/images/homepage/gdg.png (4 hours)
https://www.gitbook.com/assets/images/homepage/icon_clock.png (4 hours)
https://www.gitbook.com/assets/images/homepage/icon_laptop.png (4 hours)
https://www.gitbook.com/assets/images/homepage/icon_team.png (4 hours)
https://www.gitbook.com/assets/images/homepage/results_left.png (4 hours)
https://www.gitbook.com/assets/images/homepage/results_main.png (4 hours)
https://www.gitbook.com/assets/images/homepage/results_right.png (4 hours)
https://www.gitbook.com/assets/images/homepage/tessel.png (4 hours)
https://www.gitbook.com/assets/images/templates/api.png (4 hours)
https://www.gitbook.com/assets/images/templates/base.png (4 hours)
https://www.gitbook.com/assets/images/templates/faq.png (4 hours)
https://www.gitbook.com/assets/js/Homepage.js?version=19.7.61 (4 hours)
https://www.gitbook.com/assets/js/vendor.js?version=19.7.61 (4 hours)
https://www.gitbook.com/assets/style.css?version=19.7.61 (4 hours)

gitbook.io Mobile Resource Breakdown

Total Resources27
Number of Hosts3
Static Resources19
JavaScript Resources3
CSS Resources2

gitbook.io mobile page usability

Last tested: 2018-03-26


Mobile Usability Medium
75/100

gitbook.io Mobile Usability Test Quick Summary


priority - 15Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

WE ARE HIRING! renders only 5 pixels tall (12 CSS pixels).

Sign Up renders only 5 pixels tall (14 CSS pixels).

Sign In renders only 5 pixels tall (14 CSS pixels).

Pricing and 3 others render only 5 pixels tall (14 CSS pixels).

GitBook helps…ontent online. renders only 8 pixels tall (20 CSS pixels).

YOUR EMAIL ADDRESS and 2 others render only 4 pixels tall (11 CSS pixels).

Sign up for GitBook renders only 5 pixels tall (14 CSS pixels).

Or login with your and 1 others render only 5 pixels tall (14 CSS pixels).

Over 200,000 p…using GitBook. renders only 5 pixels tall (14 CSS pixels).

Create your do…sktop editors. and 2 others render only 5 pixels tall (14 CSS pixels).

Public books are always free. and 1 others render only 6 pixels tall (16 CSS pixels).
Join over 200,000 people renders only 6 pixels tall (16 CSS pixels).
Join GitBook renders only 7 pixels tall (18 CSS pixels).
API Documentation and 2 others render only 5 pixels tall (14 CSS pixels).
Write a simple…t any subject. and 2 others render only 5 pixels tall (14 CSS pixels).
View Example and 2 others render only 5 pixels tall (14 CSS pixels).
Explore and 6 others render only 5 pixels tall (14 CSS pixels).
© GitBook.com renders only 5 pixels tall (14 CSS pixels).

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

priority - 4Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 997 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

The element <img src="/assets/images…eview_home.png" class="EditorPreview"> falls outside the viewport.

priority - 3Size 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 <button type="submit" class="btn btn-second…n-lg btn-block">Sign up for GitBook</button> is close to 2 other tap targets.

The tap target <a href="/auth/github">Or login with your account</a> and 1 others are close to other tap targets.

The tap target <a href="/auth/github">Or login with your account</a> is close to 1 other tap targets.

The tap target <a href="/about">About</a> and 4 others are close to other tap targets.

gitbook.io HTML validation

Errors

Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)

Line: 1 Column: - 1468
"...a-reactid="7"><?xml version="1..." Line: 18 Column: - 9103
"...reactid="168"><?xml version="1..."

Duplicate ID “Page-1”.

Line: 5 Column: 13 - 72
"... <g id="Page-1" transform="translate(81.000000, 381.000000)"> ..." Line: 21 Column: 5 - 86
"...defs> <g id="Page-1" stroke="none" stroke-width="1" fill-rule="evenodd" fill="#3884ff"> ..."

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

Line: 18 Column: 3354 - 3444
"...ctid="66"><img class="EditorPreview" src="/assets/images/editor/preview_home.png" data-reactid="67"/></div>..." Line: 18 Column: 3674 - 3741
"...ctid="72"><img src="/assets/images/homepage/icon_team.png" data-reactid="73"/><h3 da..." Line: 18 Column: 3991 - 4060
"...ctid="77"><img src="/assets/images/homepage/icon_laptop.png" data-reactid="78"/><h3 da..." Line: 18 Column: 4319 - 4387
"...ctid="82"><img src="/assets/images/homepage/icon_clock.png" data-reactid="83"/><h3 da..." Line: 18 Column: 4992 - 5062
"...ctid="95"><img src="/assets/images/homepage/results_left.png" data-reactid="96"/></div>..." Line: 18 Column: 5112 - 5182
"...ctid="97"><img src="/assets/images/homepage/results_main.png" data-reactid="98"/></div>..." Line: 18 Column: 5233 - 5305
"...ctid="99"><img src="/assets/images/homepage/results_right.png" data-reactid="100"/></div>..." Line: 18 Column: 5594 - 5678
"...tid="106"><img src="/assets/images/homepage/duckduckgo.png" class="active" data-reactid="107"/></div>..." Line: 18 Column: 5785 - 5856
"...tid="109"><img src="/assets/images/homepage/gdg.png" class="" data-reactid="110"/></div>..." Line: 18 Column: 5963 - 6042
"...tid="112"><img src="/assets/images/homepage/djangogirls.png" class="" data-reactid="113"/></div>..." Line: 18 Column: 6149 - 6223
"...tid="115"><img src="/assets/images/homepage/tessel.png" class="" data-reactid="116"/></div>..." Line: 18 Column: 7322 - 7385
"...tid="138"><img src="/assets/images/templates/api.png" data-reactid="139"/><h5 da..." Line: 18 Column: 7854 - 7917
"...tid="147"><img src="/assets/images/templates/faq.png" data-reactid="148"/><h5 da..." Line: 18 Column: 8372 - 8436
"...tid="156"><img src="/assets/images/templates/base.png" data-reactid="157"/><h5 da..."

Warnings

The first occurrence of ID “Page-1” was here.

Line: 3 Column: 5 - 82
"...ink"> <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"> ..." Line: 3 Column: 5 - 82
"...ink"> <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"> ..."

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

Line: 18 Column: 2682 - 2778
"...4"/></div><button type="submit" class="btn btn-secondary btn-lg btn-block" role="button" data-reactid="55"><!-- r..."

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gitbook.io 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.


gitbook.io 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.