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Whois & Analysis for slack.com

Oct 30, 2019 12:26 am UTC

DOMAIN OWNER WHOIS

ⓘ The owner has chosen to keep his whois contact information private.
Desktop screen Desktop screenshot for slack.com

SEO SCORE

slack.com
Make your link ↑ do-follow
90

✅ 10 criteria passed
❌ 1 criteria to solve

PERFORMANCE OPPORTUNITIES

Fill the missing alt attributes on your images.
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OVERVIEW

• Domain Owner
Private
• Category
Net Conferencing  >  Technology & Computing
• Online since
October 21, 1992 Explore Wayback Machine
• Alexa Rank
#305, slack.com is in the world's top 500 websites!

FREE FORM BUILDER

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TECHNICAL SEO & SECURITY

❌ SSL Certificate
This website is not SSL secured (HTTPS), the certificate issued by DigiCert Inc has expired on February 12, 2021.
✅ Title Tag
Where work happens | Slack
Length: 26 (recommended: 10 to 70)
✅ Meta Description
Slack is where work flows. It's where the people you need, the information you share, and the tools you use come together to get things done.
Length: 141 (recommended: 50 to 160)
ⓘ Google preview
Desktop Version

Where work happens | Slack

https://slack.com

Slack is where work flows. It's where the people you need, the information you share, and the tools you use come together to get things done.

Mobile Version

https://slack.com

Where work happens | Slack

Slack is where work flows. It's where the people you need, the information you share, and the tools you use come together to get t...

✅ Encoding
Great, language/character encoding is specified: utf-8
ⓘ Hreflang Tags
Alternate URL Hreflang
https://slack.com/ en-us
https://slack.com/intl/fr-fr/ fr-fr
https://slack.com/intl/de-de/ de-de
https://slack.com/intl/es-es/ es-es
https://slack.com/intl/ja-jp/ ja-jp
SEE MORE
✅ URL Resolve

Great, a redirect is in place to redirect traffic from your non-preferred domain. All versions of your page point to the same URL.

URL Resolved URL
http://slack.com https://slack.com/
https://slack.com https://slack.com/
http://www.slack.com https://slack.com/
https://www.slack.com https://slack.com/
✅ Robots.txt
https://slack.com/robots.txt
✅ URL Parameters
Great, the domain URLs look clean.
Attribute Value
ⓘ author Slack
ⓘ viewport width=device-width, initial-scale=1

SEMANTIC ANALYSIS

ⓘ The results of our semantic analysis are shown below using the website's language.

They are the main concepts covered by slack.com.

Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.

Topics
Firefox Confidence: 87% Arrow up

Mozilla Firefox (or simply Firefox) is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary the Mozilla Corporation.

Firefox is available for Windows, macOS and Linux operating systems, with its Firefox for Android available for Android (formerly Firefox for mobile, it also ran on the discontinued Firefox OS); where all of these versions use the Gecko layout engine to render web pages, which implements current and anticipated web standards.

An additional version, Firefox for iOS, was released in late 2015, but this version does not use Gecko due to Apple's restrictions limiting third-party web browsers to the WebKit-based layout engine built into iOS.
Google Chrome Confidence: 77% Arrow up

Google Chrome is a freeware web browser developed by Google.

It was first released in 2008, for Microsoft Windows, and was later ported to Linux, macOS, iOS and Android.

Google Chrome is also the main component of Chrome OS, where it serves as a platform for running web apps.
Web browser Confidence: 75% Arrow up

A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web.

An information resource is identified by a Uniform Resource Identifier (URI/URL) that may be a web page, image, video or other piece of content.

Hyperlinks present in resources enable users easily to navigate their browsers to related resources.
GNU General Public License Confidence: 73% Arrow up

The GNU General Public License (GNU GPL or GPL) is a widely used free software license, which guarantees end users the freedom to run, study, share and modify the software.

The license was originally written by Richard Stallman of the Free Software Foundation (FSF) for the GNU Project, and grants the recipients of a computer program the rights of the Free Software Definition.

The GPL is a copyleft license, which means that derivative work can only be distributed under the same license terms.

This is in distinction to permissive free software licenses, of which the BSD licenses and the MIT License are widely used examples.

GPL was the first copyleft license for general use.
Slack (software) Confidence: 71% Arrow up

Slack is a cloud-based team collaboration tool founded by Stewart Butterfield.

Slack began as an internal tool used by their company, Tiny Speck, in the development of Glitch, a now defunct online game.

The name is an acronym for "Searchable Log of All Conversation and Knowledge".

WEBSITE SPEED

✅ slack.com website speed is normal. Page speed is important for visitors and search engines.

Get insights to improve your page loading time.

Page Loading Time

0.8s

This domain loads at the median speed of 0.8 seconds.

Speed Percentile

86%

slack.com is faster than approximately 86 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.

A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.

PAGESPEED INSIGHTS

Page on which speed is tested live:

Chrome User Experience Report Results

Lighthouse Results

TRAFFIC

ⓘ This website is ranked #305 by Alexa.

This rank is traffic based. The lower the rank is, the better the domain is ranked.

Daily visitors by country

  • slack.com daily visitors distribution - Total: 20 countries
  • Flag for IndiaIndia (13.0%)
  • Flag for United States of AmericaUnited States of America (41.4%)
  • Flaf icon for other countryOthers (45.6%)

Traffic country ranks

Country Rank
Flag for IndiaIndia #223
Flag for SingaporeSingapore #388
Flag for TurkeyTurkey #878
Flag for Russian FederationRussian Federation #2.724
Flag for IsraelIsrael #250
SEE MORE

LAYOUT

ⓘ Doctype HTML5 Arrow ⓘ Responsive website, mobile-friendly. Arrow

Mobile Rendering

This website seems to be optimized for Mobile Visitors.

Phone
How slack.com looks like on a mobile device such as an iPhone.

Tablet
How slack.com looks like on a tablet such as an iPad.

Main colors used

ⓘ These are the main HTML color codes used by this website. Arrow
  • 73% #ffffff
  • 16% #f0f0f0
  • 2% #401040
  • 1% #602060
  • 1% #301030
  • 1% #fffff0
  • 1% #ffc040
  • 1% #f0ffff
  • 1% #fff0ff
  • 1% #e0b030
  • 1% #502050
  • 0% #704070

Text/code ratio

ⓘ slack.com's text/code ratio is 2.71%. It's a bit low. Consider raising it by adding more text content of value for your visitors, or keeping your code clean.
Text / Code Ratio 2.71%

A good text to HTML ratio is anywhere from 25 to 70%.

This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.

Main HTML tags

✅ Headings Arrow up

Great, we found headings on this page.

  • <H1> 1
  • <H2> 4
  • <H3> 7
  • <H4> 3
  • <H5> 0
  • <H6> 0
<H1>
Top level heading
Whatever work you do, you can do it in slack
<H2>
2nd level heading
Put collaboration at your fingertips
Efficient teamwork for every enterprise
You’re in good company
Get more out of slack
<H3>
3rd level heading
Not all daily active users are created equal: work is fueled by true engagement (2)
Shared channels: a better way to work with people outside your company (2)
Slack and g suite bring productivity to your everyday work (2)
Say hello to the collaboration hub
<H4>
4th level heading
Americas
Europe
Asia pacific
❌ Alt attributes Arrow up

We found 52 images on this website.
23 ALT attributes are missing on your image tags. The issue affects 16 actual different images that could be loaded more than once in your page.

Image Image URL Occurrences
Image with missing alt attribute found on slack.com /marketing/img/homepage/icons/yellow-chat-icon.png 2
Image with missing alt attribute found on slack.com /marketing/img/homepage/icons/zendesk-icon.png 1
Image with missing alt attribute found on slack.com /marketing/img/homepage/icons/green-chat-icon.png 2
Image with missing alt attribute found on slack.com /marketing/img/homepage/icons/asana-icon.png 1
Image with missing alt attribute found on slack.com /marketing/img/homepage/icons/dropbox-icon.png 1
SEE MORE

Alternative text allows you to add a description to an image.

Google rely on alternative text attributes to determine relevance to a search query. Alternative text also makes an image more likely to appear in a Google image search.

It looks like you're missing alternative text for 23 images on slack.com. Check your website to make sure it's specified for each image on the page.

SOCIAL MEDIA PRESENCE

✅ This is an overview of your homepage shares on social networks.

Congratulations, your website is highly shared on social media! It's an excellent signal for your overall SEO strategy.

  • Facebook iconFacebook
  • Total Engagement 78.601
  • Likes 13.390
  • Shares 23.792
  • Comments 41.419
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Guest Post - Homepage Link - Regular Page Link
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642 Turnbuckle Dr, Redwood City CA 94063