National Institutes of Health (NIH) | Turning Discovery Into Health

Mobile Usability



Mobile Speed



Last tested: 2017-08-27

Rescan Mobile Usability: 99/100 Mobile Usability Test Quick Overview

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="#main-content" class="element-invisi…ment-focusable">Skip to main content</a> is close to 1 other tap targets. Mobile Speed: 55/100 Mobile Speed Test Quick Overview

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

Your page has 7 blocking script resources and 7 blocking CSS resources. This causes a delay in rendering your page.…ma,mov,avi,mp3,mp4,csv…OWbECRYUmdp4KDZzze8.js
Optimize CSS Delivery of the following:…WbECRYUmdp4KDZzze8.css…WbECRYUmdp4KDZzze8.css…WbECRYUmdp4KDZzze8.css…c,regular&subset=latin…WbECRYUmdp4KDZzze8.css…WbECRYUmdp4KDZzze8.css
Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
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: (expiration not specified) (expiration not specified) (expiration not specified) (expiration not specified) (expiration not specified) (60 minutes) (60 minutes) (2 hours)
Optimize images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 8.8KiB (19% reduction).
Compressing…ons-2x-s6278c9c16d.png could save 7.4KiB (21% reduction).
Compressing…j&timestamp=1493731429 could save 929B (12% reduction).
Compressing…K&timestamp=1490139322 could save 513B (12% reduction).
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 852B (29% reduction).
Minifying could save 852B (29% reduction) after compression. Mobile Resources

Total Resources60
Number of Hosts12
Static Resources49
JavaScript Resources16
CSS Resources7 Mobile Resource Breakdown