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Mobile Usability

60/100

Bad

Mobile Speed

63/100

Bad

Last tested: 2017-08-27

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stackexchange.com Mobile Usability: 60/100
stackexchange.com Mobile Usability Test Quick Overview

Use 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.
about us and 4 others render only 5 pixels tall (13 CSS pixels).
Newsletters and 2 others render only 5 pixels tall (14 CSS pixels).
Stack Exchange…t. Here's how: renders only 7 pixels tall (18 CSS pixels).
The right answ…Right on top. and 2 others render only 5 pixels tall (14 CSS pixels).
Experts like y…easy to find. and 3 others render only 5 pixels tall (14 CSS pixels).
166 renders only 5 pixels tall (14 CSS pixels).
Learn more renders only 5 pixels tall (14 CSS pixels).
hot renders only 5 pixels tall (12 CSS pixels).
real-time renders only 5 pixels tall (12 CSS pixels).
When SharePoin…hreshold error and 29 others render only 7 pixels tall (18 CSS pixels).
independent-researcher and 80 others render only 4 pixels tall (11 CSS pixels).
12 answers |…May 5 at 11:28 and 89 others render only 4 pixels tall (11 CSS pixels).
worldbuilding and 59 others render only 4 pixels tall (11 CSS pixels).
next and 5 others render only 5 pixels tall (12 CSS pixels).
30 and 1 others render only 5 pixels tall (12 CSS pixels).
per page renders only 5 pixels tall (12 CSS pixels).
Today's Featured Site and 2 others render only 6 pixels tall (15 CSS pixels).
Computer Scien…Stack Exchange renders only 5 pixels tall (13 CSS pixels).
Q&A for studen…mputer science renders only 5 pixels tall (12 CSS pixels).
questions and 2 others render only 5 pixels tall (12 CSS pixels).
Felipe Nardi Batista and 28 others render only 5 pixels tall (12 CSS pixels).
Programming Puzzles & Code ... and 28 others render only 4 pixels tall (10 CSS pixels).
English Language & Usage St... and 9 others render only 5 pixels tall (12 CSS pixels).
view all 166 sites » renders only 5 pixels tall (12 CSS pixels).
hot questions feed renders only 5 pixels tall (14 CSS pixels).
feedback always welcome and 6 others render only 5 pixels tall (12 CSS pixels).
site design /…licensed under and 1 others render only 5 pixels tall (12 CSS pixels).
attribution required and 1 others render only 5 pixels tall (12 CSS pixels).
2017.5.3.11481 renders only 5 pixels tall (12 CSS pixels).
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="https://stacke…create-account">sign up</a> and 4 others are close to other tap targets.
The tap target <a href="/" class="youarehere">hot</a> is close to 1 other tap targets.
The tap target <a href="/questions?tab=realtime">real-time</a> is close to 1 other tap targets.
The tap target <a href="https://codego…e-first-truthy"></a> and 25 others are close to other tap targets.
The tap target <a href="https://codego…e-first-truthy" class="question-link">Be the First 1…first Truthy)</a> and 21 others are close to other tap targets.
The tap target <a href="https://codego…gged/code-golf" class="post-tag">code-golf</a> and 78 others are close to other tap targets.
The tap target <a href="https://codego…3319/ad%c3%a1m">Adám</a> and 45 others are close to other tap targets.
The tap target <a href="?pagesize=15" class="page-numbers">15</a> and 5 others are close to other tap targets.
The tap target <a href="?pagesize=30" class="current page-numbers">30</a> is close to 2 other tap targets.
The tap target <a href="https://codego…3319/ad%c3%a1m"></a> and 28 others are close to other tap targets.
The tap target <a href="https://codego…3319/ad%c3%a1m">Adám</a> and 28 others are close to other tap targets.
The tap target <a href="http://stackoverflow.com">Stack Overflow</a> and 9 others are close to other tap targets.
The tap target <a href="http://stackoverflow.com">Stack Overflow</a> and 19 others are close to other tap targets.
The tap target <a href="/sites">view all 166 sites »</a> is close to 1 other tap targets.
The tap target <a href="https://stackoverflow.blog">blog</a> and 2 others are close to other tap targets.
The tap target <a href="https://plus.g…+StackExchange" class="google-plus-icon"> is close to 3 other tap targets.
The tap target <a href="https://www.fa…/stackexchange" class="facebook-icon"> is close to 3 other tap targets.
The tap target <a href="https://twitte…/stackexchange" class="twitter-icon"> is close to 2 other tap targets.
The tap target <a href="https://creati…ses/by-sa/3.0/">cc by-sa 3.0</a> and 1 others are close to other tap targets.
Configure 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.
stackexchange.com Mobile Speed: 63/100
stackexchange.com Mobile Speed Test Quick Overview

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.
https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js
https://cdn.sstatic.net/stackexchange/js/master.js?v=d6f8adf73d66
https://cdn.sstatic.net/stackexchange/js/universal-login.js?v=fbe5a429e6dc
Optimize CSS Delivery of the following:
https://cdn.sstatic.net/Shared/TopBar/topbar.css
https://cdn.sstatic.net/stackexchange/all.css?v=8653aad3b39c
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://stackexchange.com/content/img/hero/bubble.png (expiration not specified)
https://stackexchange.com/content/img/hero/check.png (expiration not specified)
https://stackexchange.com/content/img/hero/close.png (expiration not specified)
https://stackexchange.com/content/img/hero/vote.png (expiration not specified)
https://www.gravatar.com/avatar/08458056f4d89cbedf…&d=identicon&r=PG&s=30 (5 minutes)
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https://www.gravatar.com/avatar/aede6c8f87da999a48…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/b9febd34b3b03f8fb8…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/bfac28d87fd0da5880…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/ccbc66bc886b0605de…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/cf46bc2c1afd5f2518…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/e0c79ddd9483bd8f68…&d=identicon&r=PG&s=30 (5 minutes)
https://www.gravatar.com/avatar/e865c60d19c29b3750…&d=identicon&r=PG&s=30 (5 minutes)
https://ssl.google-analytics.com/ga.js (2 hours)
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stackexchange.com Mobile Resources


Total Resources79
Number of Hosts6
Static Resources75
JavaScript Resources6
CSS Resources2

stackexchange.com Mobile Resource Breakdown