HACKMD.IO HackMD - Collaborative Markdown Knowledge Base

hackmd.io Website Information

Daily Unique Visits: 463,322

Daily Page Views: 3,706,576

Income Per Day: $3,707

Estimated Value: $4,003,560

This website is located in United States and is using following IP address 75.2.77.152. See the complete list of popular websites hosted in United States.

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

Website hackmd.io is using the following name servers:

  • ns-1444.awsdns-52.org
  • ns-1925.awsdns-48.co.uk
  • ns-221.awsdns-27.com
  • ns-845.awsdns-41.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 hackmd.io position in Alexa rank database was 3265 and the lowest rank position was 4536. Current position of hackmd.io in Alexa rank database is 3289.

Desktop speed score of hackmd.io (64/100) is better than the results of 41.34% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of hackmd.io (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.

Mobile speed score of hackmd.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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hackmd.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.


hackmd.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: hackmd.io
Registry Domain ID: 676692ee28ab4a2f94fb8a8e34e20c01-DONUTS
Registrar WHOIS Server: whois.gandi.net
Registrar URL: https://www.gandi.net
Updated Date: 2021-11-23T15:08:59Z
Creation Date: 2015-04-20T08:57:00Z
Registry Expiry Date: 2022-04-20T08:57:00Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: HackMD
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province:
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: TW
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: ns-1925.awsdns-48.co.uk
Name Server: ns-221.awsdns-27.com
Name Server: ns-845.awsdns-41.net
Name Server: ns-1444.awsdns-52.org
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-02-18T08:19:02Z

hackmd.io server information

Servers Location

hackmd.io desktop page speed rank

Last tested: 2016-01-03


Desktop Speed Bad
64/100

hackmd.io Desktop Speed Test Quick Summary


priority - 38Enable 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 374.1KiB (71% reduction).

Compressing https://static.xx.fbcdn.net/rsrc.php/v2/yL/r/b_BFnRDjyAO.js could save 230.9KiB (72% reduction).
Compressing https://connect.facebook.net/en_US/sdk.js could save 119.3KiB (69% reduction).
Compressing https://staticxx.facebook.com/connect/xd_arbiter.php?version=42 could save 21.5KiB (65% reduction).
Compressing https://platform.twitter.com/js/button.57b265f4a957883c0d94631f668764c9.js could save 2.3KiB (63% reduction).

priority - 14Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 8 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css
https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css
https://cdnjs.cloudflare.com/ajax/libs/bootstrap-s…otstrap-social.min.css
https://hackmd.io/vendor/select2/select2.css
https://hackmd.io/vendor/select2/select2-bootstrap.css
https://hackmd.io/css/cover.css
https://hackmd.io/css/site.css
https://fonts.googleapis.com/css?family=Source+San…subset=latin,latin-ext

priority - 3Leverage 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://hackmd.io/me (expiration not specified)
https://api.github.com/repos/hackmdio/hackmd?callback=callback (60 seconds)
https://cdn.syndication.twimg.com/widgets/followbu…&screen_names=hackmdio (10 minutes)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://js-agent.newrelic.com/nr-632.min.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

priority - 1Minify 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 6KiB (2% reduction).

Minifying https://static.xx.fbcdn.net/rsrc.php/v2/yL/r/b_BFnRDjyAO.js could save 2.5KiB (1% reduction).
Minifying https://cdnjs.cloudflare.com/ajax/libs/moment.js/2…nt-with-locales.min.js could save 786B (2% reduction) after compression.
Minifying https://connect.facebook.net/en_US/sdk.js could save 783B (1% reduction).
Minifying https://cdnjs.cloudflare.com/ajax/libs/handlebars.….0.5/handlebars.min.js could save 721B (4% reduction) after compression.
Minifying https://hackmd.io/js/cover.js could save 715B (13% reduction) after compression.
Minifying https://cdnjs.cloudflare.com/ajax/libs/select2/3.5.2/select2.min.js could save 517B (3% reduction) after compression.

priority - 0Minify 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 2KiB (56% reduction).

Minifying https://hackmd.io/vendor/select2/select2-bootstrap.css could save 2KiB (56% reduction) after compression.

hackmd.io Desktop Resource Breakdown

Total Resources53
Number of Hosts19
Static Resources23
JavaScript Resources30
CSS Resources8

hackmd.io mobile page speed rank

Last tested: 2019-11-05


Mobile Speed Medium
66/100

hackmd.io Mobile Speed Test Quick Summary


priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 4 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://assets.hackmd.io/build/font-vendor.eecf61e70217f6eedcf1.css
https://assets.hackmd.io/build/common-vendor.27671d829544e07a70ba.css
https://assets.hackmd.io/build/cover-vendor.3eef83c1a19f3f221d83.css
https://assets.hackmd.io/build/cover.5e54ff6faa5c5c7ce2ea.css

priority - 4Leverage 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://hackmd.io/me (expiration not specified)
https://embed.small.chat/T3T05F2GZGAT0A18BY.js (60 seconds)
https://www.googletagmanager.com/gtag/js?id=UA-60728495-1 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KLW9Z3 (15 minutes)
https://rules.quantcount.com/rules-p-GpPtabXgUQ99B.js (60 minutes)

priority - 1Minify 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 5KiB (11% reduction).

Minifying https://assets.hackmd.io/build/cover.5e54ff6faa5c5c7ce2ea.css could save 4.9KiB (11% reduction) after compression.
Minifying https://assets.hackmd.io/build/font-vendor.eecf61e70217f6eedcf1.css could save 133B (12% reduction) after compression.

priority - 0Enable 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 1.7KiB (48% reduction).

Compressing https://embed.small.chat/T3T05F2GZGAT0A18BY.js could save 529B (45% reduction).
Compressing https://assets.hackmd.io/build/font-vendor.9993ec30080f703da69e.js could save 509B (51% reduction).
Compressing https://hackmd.io/images/home/index-value-01.svg could save 472B (50% reduction).
Compressing https://hackmd.io/images/home/group.svg could save 220B (48% reduction).

priority - 0Minify 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 1.2KiB (13% reduction).

Minifying https://hackmd.io/ could save 1.2KiB (13% reduction) after compression.

priority - 0Optimize images

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

Optimize the following images to reduce their size by 803B (20% reduction).

Compressing https://hackmd.io/images/home/logo-crowd-works.png could save 803B (20% reduction).

hackmd.io Mobile Resource Breakdown

Total Resources52
Number of Hosts8
Static Resources45
JavaScript Resources13
CSS Resources4

hackmd.io mobile page usability

Last tested: 2019-11-05


Mobile Usability Good
96/100

hackmd.io Mobile Usability Test Quick Summary


priority - 3Size 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 418 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <button type="submit" class="btn btn-succes…g ui-home-join">Sign-up</button> falls outside the viewport.
The element <button type="submit" class="btn btn-succes…g ui-home-join">Sign-up</button> falls outside the viewport.

priority - 0Size 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/hackmdio"></a> and 1 others are close to other tap targets.
The tap target <a href="https://twitter.com/hackmdio"></a> and 1 others are close to other tap targets.

hackmd.io HTML validation

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 7 Column: 1 - 88
"...IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"> <meta..."

Empty heading.

Line: 69 Column: 21 - 47
"... <h3 class="masthead-brand"></h3> ..." Line: 317 Column: 17 - 48
"... <h5 class="ui-delete-modal-msg"></h5> ..."

Errors

Attribute “href” not allowed on element “p” at this point.

Line: 60 Column: 5 - 75
"... <p class="annoucement" href="https://hackmd.io/c/news" target="_blank"> <..."

Attribute “target” not allowed on element “p” at this point.

Line: 60 Column: 5 - 75
"... <p class="annoucement" href="https://hackmd.io/c/news" target="_blank"> <..."

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

Line: 80 Column: 29 - 90
"... <div class="ui-signin" style="float: right; margin-top: 8px;"> ..."

Bad value “button” for attribute “type” on element “a”: Subtype missing.

Line: 106 Column: 9 - 140
"...> <a type="button" class="btn btn-lg btn-success ui-signin" data-toggle="modal" data-target=".signin-modal" style="min-width: 200px;">Sign I..." Line: 112 Column: 9 - 116
"...> <a type="button" href="https://hackmd.io/features" class="btn btn-lg btn-primary" style="min-width: 200px;">Explor..."

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

Line: 114 Column: 5 - 61
"...span> <img src="https://hackmd.io/concept.svg" class="concept"> <..."

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

Line: 116 Column: 9 - 29
"...> <div class="scenrio"> ..." Line: 122 Column: 9 - 30
"...> <div class="features"> ..." Line: 172 Column: 9 - 29
"...> <div class="scenrio"> ..." Line: 178 Column: 9 - 30
"...> <div class="features"> ..." Line: 216 Column: 9 - 27
"...> <div class="quote"> ..." Line: 222 Column: 9 - 27
"...> <div class="plans"> ..."

Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Line: 221 Column: 9 - 34
"...> <h2 class="plans-heading">Plans<..."

Element “form” not allowed as child of element “h5” in this context. (Suppressing further errors from this subtree.)

Line: 259 Column: 25 - 93
"... <form action="https://www.paypal.com/cgi-bin/webscr" target="_blank"> ..."

Element “div” not allowed as child of element “h6” in this context. (Suppressing further errors from this subtree.)

Line: 271 Column: 25 - 195
"... <div class="fb-like" data-href="https://www.facebook.com/hackmdio" data-width="80" data-layout="button_count" data-action="like" data-show-faces="true" data-share="false"></div>..."

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hackmd.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.


hackmd.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.