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Mobile Usability

96/100

Good

Mobile Speed

51/100

Bad

Last tested: 2017-08-29

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slack.help Mobile Usability: 96/100
slack.help Mobile Usability Test Quick Overview

Size 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 414 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:
The element <div class="intro_card_container">Using Slack…e all articles</div> falls outside the viewport.
Size 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="/hc/en-us/articles/202288908">message formatting</a> and 1 others are close to other tap targets.
slack.help Mobile Speed: 51/100
slack.help Mobile Speed Test Quick Overview

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

Your page has 5 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
https://p4.zdassets.com/hc/assets/jquery.js
https://code.jquery.com/ui/1.11.0/jquery-ui.js
https://fast.wistia.com/assets/external/popover-v1.js
https://p4.zdassets.com/hc/theme_assets/138842/200…zendesk-min.js?aug14_1
https://p4.zdassets.com/hc/themes/138842/201159516…d=1067416&locale=en-us
Optimize CSS Delivery of the following:
https://p4.zdassets.com/hc/assets/application-e8d2…94386797415147e7e1.css
https://p4.zdassets.com/hc/themes/138842/201159516…d=1067416&locale=en-us
https://fonts.googleapis.com/css?family=Lato:300,400,700,900
https://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css
Avoid landing page redirects

Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://slack.help/
https://get.slack.help/
https://get.slack.help/hc
https://get.slack.help/hc/en-us
Optimize images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 149.2KiB (39% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…attern_transparent.png could save 98.2KiB (33% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…admin-illustration.png could save 18.3KiB (42% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…/icon_search_black.png could save 14.9KiB (93% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…/icon_search_white.png could save 14.6KiB (93% reduction).
Compressing https://p4.zdassets.com/hc/theme_assets/138842/200037786/logo_white.png could save 1KiB (21% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…con_quick_switcher.png could save 811B (48% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200037786//icon_search.png could save 757B (40% reduction).
Compressing https://p6.zdassets.com/hc/theme_assets/138842/200…86//icon_magicwand.png could save 624B (44% reduction).
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 77.7KiB (42% reduction).
Minifying https://p4.zdassets.com/hc/assets/jquery.js could save 39.1KiB (50% reduction) after compression.
Minifying https://code.jquery.com/ui/1.11.0/jquery-ui.js could save 38.5KiB (36% reduction) after compression.
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://p4.zdassets.com/hc/assets/application-e8d2…94386797415147e7e1.css (expiration not specified)
https://p4.zdassets.com/hc/assets/hc_enduser-6ad280da50ffebb349b4.js (expiration not specified)
https://p4.zdassets.com/hc/assets/jquery.js (expiration not specified)
https://p4.zdassets.com/hc/assets/locales/en-us-3f…47d34e45d9ca56b553d.js (expiration not specified)
https://assets.zendesk.com/embeddable_framework/main.js (60 seconds)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
https://fast.wistia.com/assets/external/popover-v1.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
Minify 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 7.7KiB (15% reduction).
Minifying https://p4.zdassets.com/hc/themes/138842/201159516…d=1067416&locale=en-us could save 3.7KiB (14% reduction) after compression.
Minifying https://p4.zdassets.com/hc/assets/application-e8d2…94386797415147e7e1.css could save 2.7KiB (14% reduction) after compression.
Minifying https://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css could save 1.3KiB (22% reduction) after compression.

slack.help Mobile Resources


Total Resources54
Number of Hosts17
Static Resources35
JavaScript Resources22
CSS Resources5

slack.help Mobile Resource Breakdown