harvard.edu Harvard University

Mobile Usability



Mobile Speed



Last tested: 2017-08-27

harvard.edu Mobile Usability: 96/100
harvard.edu 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 416 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:
The element <button type="button" class="slick-next">Next</button> 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="http://twitter…m/RadInstitute">@RadInstitute</a> and 2 others are close to other tap targets.
harvard.edu Mobile Speed: 40/100
harvard.edu Mobile Speed Test Quick Overview

Optimize images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 1.4MiB (66% reduction).
Compressing http://www.trumba.com/i/DgCIiSiO3-srbYtT2K7G3B1s.jpg could save 611.9KiB (91% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…pipe_60742839-full.jpg could save 228.2KiB (74% reduction).
Compressing http://www.trumba.com/i/DgAFoW7BfX828wr-4Ys1RDY7.jpg could save 127.9KiB (81% reduction).
Compressing http://www.trumba.com/i/DgApG8yiiSYP934NWjZ9TucO.jpg could save 125.6KiB (71% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…GATE_311_368673-st.jpg could save 72KiB (46% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…Stock-579164346-st.jpg could save 67.3KiB (31% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…iStock-579164346-w.jpg could save 48.9KiB (39% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…AGATE_311_368673-w.jpg could save 41.3KiB (47% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…BIN_0116_363657-st.jpg could save 39.7KiB (41% reduction).
Compressing http://www.harvard.edu/sites/default/files/feature…BBIN_0116_363657-w.jpg could save 28.4KiB (49% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/a…mg/socialFooter@2x.png could save 20.5KiB (67% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/assets/img/shield.png could save 17.1KiB (66% reduction).
Compressing https://harvardgazette.files.wordpress.com/2017/05/drone_arch-site-140.jpg could save 15.3KiB (73% reduction).
Compressing https://harvardgazette.files.wordpress.com/2017/04…_pipe_60742839_140.jpg could save 12.8KiB (75% reduction).
Compressing https://harvardgazette.files.wordpress.com/2017/04…17_hbs_hs_1467_140.jpg could save 8.4KiB (50% reduction).
Compressing https://harvardgazette.files.wordpress.com/2017/03…nt-abell-scott_140.jpg could save 4.5KiB (48% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/a…al-color-sprite@2x.png could save 3.1KiB (13% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/a…img/arrow-right@2x.png could save 2KiB (66% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/a…s/img/icon-goto@2x.png could save 1.4KiB (53% reduction).
Compressing http://www.harvard.edu/sites/all/themes/hedu2015/a…img/search-icon@2x.png could save 1.2KiB (51% reduction).
Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
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://w.soundcloud.com/player/api.js (5 minutes)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-TK7H6Z (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/116026588849778?v=2.7.6 (20 minutes)
http://static.chartbeat.com/js/chartbeat.js (2 hours)
http://www.google-analytics.com/analytics.js (2 hours)
https://js-agent.newrelic.com/nr-1026.min.js (2 hours)
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 5.7KiB (31% reduction).
Minifying http://www.harvard.edu/sites/all/themes/hedu2015/assets/slick/slick.js could save 2.3KiB (21% reduction) after compression.
Minifying http://www.harvard.edu/sites/all/themes/hedu2015/assets/js/script.js could save 2.2KiB (51% reduction) after compression.
Minifying http://www.harvard.edu/sites/all/themes/hedu2015/a…ries/ElementQueries.js could save 1.1KiB (37% reduction) after compression.

harvard.edu Mobile Resources

Total Resources69
Number of Hosts22
Static Resources49
JavaScript Resources20
CSS Resources4

harvard.edu Mobile Resource Breakdown