SLACK.COM Slack: Be less busy

slack.com Website Information

Daily Unique Visits: 4,822,362

Daily Page Views: 38,578,896

Income Per Day: $38,579

Estimated Value: $41,665,320

This website is located in United States and is using following IP address 205.251.215.208. See the complete list of popular websites hosted in United States.

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

Website slack.com is using the following name servers:

  • ns-166.awsdns-20.com
  • ns-1493.awsdns-58.org
  • ns-1901.awsdns-45.co.uk
  • ns-606.awsdns-11.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 slack.com position in Alexa rank database was 53 and the lowest rank position was 1168. Current position of slack.com in Alexa rank database is 316.

Desktop speed score of slack.com (83/100) is better than the results of 79.34% of other sites and shows that the page is performing great on desktop computers.

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

Mobile speed score of slack.com (68/100) is better than the results of 73.64% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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slack.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.


slack.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: SLACK.COM
Registry Domain ID: 900992_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.markmonitor.com
Registrar URL: http://www.markmonitor.com
Updated Date: 2017-02-15T21:23:58Z
Creation Date: 1992-10-21T04:00:00Z
Registry Expiry Date: 2019-10-20T04:00:00Z
Registrar: MarkMonitor Inc.
Registrar IANA ID: 292
Registrar Abuse Contact Email: abusecomplaints@markmonitor.com
Registrar Abuse Contact Phone: +1.2083895740
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: serverDeleteProhibited https://icann.org/epp#serverDeleteProhibited
Domain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
Domain Status: serverUpdateProhibited https://icann.org/epp#serverUpdateProhibited
Name Server: NS-1493.AWSDNS-58.ORG
Name Server: NS-166.AWSDNS-20.COM
Name Server: NS-1901.AWSDNS-45.CO.UK
Name Server: NS-606.AWSDNS-11.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2018-03-03T10:40:24Z

slack.com server information

Servers Location

slack.com desktop page speed rank

Last tested: 2016-06-12


Desktop Speed Medium
83/100

slack.com Desktop Speed Test Quick Summary


priority - 12 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://cdn.optimizely.com/js/3731070284.js

Optimize CSS Delivery of the following:

https://a.slack-edge.com/1d9c/style/libs/lato-1-compressed.css
https://a.slack-edge.com/da2c/style/brand_base.css
https://a.slack-edge.com/6305/style/mobile_app_download_banner.css
https://a.slack-edge.com/a354/style/rollup-landing.css
https://a.slack-edge.com/7f2d/style/plastic_menu.css

priority - 6 Leverage 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://slack.com/img/landing/underlines_mars.png (expiration not specified)
https://slack.com/img/landing/underlines_robots.png (expiration not specified)
https://slack.com/img/wired/nasa-header-image@tiny.jpg (expiration not specified)
https://cdn.optimizely.com/js/3731070284.js (2 minutes)
https://s.adroll.com/j/roundtrip.js (5 minutes)
https://s.adroll.com/pixel/4UHU5P4P3FESHLUMNBLWAU/…N2U4VSJGOVKC2WJLQNH.js (5 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KH2LPK (16.3 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://platform.twitter.com/oct.js (30 minutes)
https://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js (60 minutes)
https://d1ivexoxmp59q7.cloudfront.net/slack/live.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://snap.licdn.com/li.lms-analytics/insight.min.js (9.1 hours)

slack.com Desktop Resource Breakdown

Total Resources78
Number of Hosts35
Static Resources39
JavaScript Resources22
CSS Resources5

slack.com mobile page speed rank

Last tested: 2017-12-17


Mobile Speed Medium
68/100

slack.com Mobile Speed Test Quick Summary


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

Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://a.slack-edge.com/bv1-1/webpack.manifest.46c42833cce88fcb65c5.min.js
https://a.slack-edge.com/bv1-1/security.clickjacki…5960e7044770ad6.min.js
https://a.slack-edge.com/bv1-1/security.hashcheck.…eec80b22f6c72ec.min.js

Optimize CSS Delivery of the following:

https://a.slack-edge.com/5ed746/style/rollup-marketing.css
https://a.slack-edge.com/8034f/marketing/style/page_index.css

priority - 8 Leverage 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://s.yimg.com/wi/ytc.js (expiration not specified)
https://s.adroll.com/j/roundtrip.js (5 minutes)
https://s.adroll.com/pixel/4UHU5P4P3FESHLUMNBLWAU/…N2U4VSJGOVKC2WJLQNH.js (5 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-KH2LPK (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/406609…31182?v=2.8.6&r=stable (20 minutes)
https://connect.facebook.net/signals/config/783626…71512?v=2.8.6&r=stable (20 minutes)
https://d1ivexoxmp59q7.cloudfront.net/slack/live.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://snap.licdn.com/li.lms-analytics/insight.min.js (4 hours)

priority - 0 Enable 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 1.1KiB (65% reduction).

Compressing https://slack.sp1.convertro.com/trax2/slack/0/ptrx…5CP%3B%20%3B%20%3B%201 could save 1.1KiB (65% reduction).

priority - 0 Minify 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 530B (14% reduction).

Minifying https://s.adroll.com/pixel/4UHU5P4P3FESHLUMNBLWAU/…N2U4VSJGOVKC2WJLQNH.js could save 530B (14% reduction) after compression.

priority - 0 Minify 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 924B (16% reduction).

Minifying https://slack.com/ could save 924B (16% reduction) after compression.

slack.com Mobile Resource Breakdown

Total Resources96
Number of Hosts41
Static Resources40
JavaScript Resources24
CSS Resources2

slack.com mobile page usability

Last tested: 2017-12-17


Mobile Usability Good
100/100

slack.com Mobile Resource Breakdown

Total Resources96
Number of Hosts41
Static Resources40
JavaScript Resources24
CSS Resources2

slack.com HTML validation

Errors

A “charset” attribute on a “meta” element found after the first 1024 bytes.

Line: 102 Column: - 21
"... charset="utf-8"> <meta name="..."

A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.

Line: 106 Column: 1 - 64
"...ale=1" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> ..."

A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.

Line: 114 Column: 1 - 128
".../png" /> <link rel="apple-touch-icon-precomposed" sizes="152x152" href="https://a.slack-edge.com/436da/marketing/img/meta/ios-152.png" /> <link..." Line: 115 Column: 1 - 128
"...2.png" /> <link rel="apple-touch-icon-precomposed" sizes="144x144" href="https://a.slack-edge.com/436da/marketing/img/meta/ios-144.png" /> <link..." Line: 116 Column: 1 - 128
"...4.png" /> <link rel="apple-touch-icon-precomposed" sizes="120x120" href="https://a.slack-edge.com/436da/marketing/img/meta/ios-120.png" /> <link..." Line: 117 Column: 1 - 128
"...0.png" /> <link rel="apple-touch-icon-precomposed" sizes="114x114" href="https://a.slack-edge.com/436da/marketing/img/meta/ios-114.png" /> <link..." Line: 118 Column: 1 - 127
"...4.png" /> <link rel="apple-touch-icon-precomposed" sizes="72x72" href="https://a.slack-edge.com/436da/marketing/img/meta/ios-72.png" /> <link..."

Duplicate attribute “data-clog-ui-component”.

Line: 162 Column: - 205
"...og-ui-component="inc_header_na..."

A slash was not immediately followed by “>”.

Line: 177 Column: - 80
"...icon_menu.svg"/ alt=""> </b..."

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

Line: 205 Column: 5 - 10
"...</li> <span>|</spa..."

Attribute “charset” not allowed on element “form” at this point.

Line: 236 Column: 1 - 136
"... <form action="https://slack.com/get-started" method="post" class="c-form v--left v--primary" charset="UTF-8" novalidate data-cta="true"> <div..." Line: 359 Column: 1 - 128
"... <form action="https://slack.com/get-started" method="post" class="c-form v--primary" charset="UTF-8" novalidate data-cta="true"> <div..."

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

Line: 413 Column: 152 - 327
"...ack.com/"><img class="c-nav--footer__svgicon c-slackhash" src="https://a.slack-edge.com/a425/marketing/img/icons/icon_slack_hash_colored.svg" width="54" height="54" aria-label="Slack" /></a> ..." Line: 533 Column: 7 - 168
"...r"> <img class="c-nav--footer__svgicon" src="https://a.slack-edge.com/a425/marketing/img/icons/icon_social_twitter.svg" width="20" height="20" aria-label="Twitter" /> ..." Line: 538 Column: 7 - 171
"...k"> <img class="c-nav--footer__svgicon" src="https://a.slack-edge.com/abd87/marketing/img/icons/icon_social_facebook.svg" width="22" height="22" aria-label="Facebook" /> ..." Line: 543 Column: 7 - 168
"...e"> <img class="c-nav--footer__svgicon" src="https://a.slack-edge.com/a425/marketing/img/icons/icon_social_youtube.svg" width="20" height="20" aria-label="YouTube" /> ..."

Warnings

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

Line: 149 Column: 1 - 22
"...> <header role="banner"> <nav..."

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

Line: 150 Column: 2 - 85
"...banner"> <nav class="c-nav c-nav--primary" role="navigation" aria-label="Primary Navigation"> <di..." Line: 185 Column: 1 - 112
"...nav> <nav id="main_nav" class="c-nav__mobile v--primary is-hidden" role="navigation" aria-label="Primary Navigation"> <d..." Line: 415 Column: 4 - 104
"...></a> <nav class="c-footer--wrap t-contains-subtle-links" role="navigation" aria-label="Footer Navigation"> ..."

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

Line: 216 Column: 3 - 30
"...eader> <main id="main" role="main"> <se..."

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slack.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.


slack.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.