ibm.com IBM - United States

Mobile Usability

99/100

Good

Mobile Speed

24/100

Bad

Last tested: 2017-08-27

Rescan
ibm.com Mobile Usability: 99/100
ibm.com 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 <li class="ibm-masthead-item-signin">My IBMMy IBMSign in</li> is close to 1 other tap targets.
The tap target <li class="ibm-masthead-item-signin">My IBMMy IBMSign in</li> and 1 others are close to other tap targets.
The tap target <button class="ibm-profile-link">My IBM</button> is close to 1 other tap targets.
ibm.com Mobile Speed: 24/100
ibm.com 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 1.2MiB (63% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/trials/0…tics_15930_470x227.png could save 486.3KiB (92% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/trials/t…blockchain_470x277.png could save 453.1KiB (86% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/leadspac…-ls-16438-2000x600.jpg could save 84.6KiB (33% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/contents…llo_16553_2000x600.jpg could save 62.1KiB (22% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/cognitiv…_era_16542_600x260.jpg could save 34.1KiB (60% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/featured…_air_16413_600x260.jpg could save 33.8KiB (62% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/cognitiv…nage_16533_600x260.jpg could save 24.4KiB (43% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/cognitiv…nter_16531_600x260.jpg could save 16.9KiB (30% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/featured…inar_16496_600x260.jpg could save 14.9KiB (27% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/featured…Case_16548_600x260.jpg could save 5KiB (14% reduction).
Compressing https://consent.truste.com/get?name=cookiepreferencestext.png could save 3KiB (77% reduction).
Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 6 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
https://cdn.optimizely.com/js/3867211201.js
https://www.ibm.com/us-en/js/ibm-mm-op-test.js
https://1.www.s81c.com/common/stats/ida_stats.js
https://1.www.s81c.com/common/v18/js/www.js
https://cdn.getsmartcontent.com/K4N6C19R.js
https://www.ibm.com/us-en/js/ibm-cci.js?r=1494250236082
Optimize CSS Delivery of the following:
https://1.www.s81c.com/common/v18/css/www.css
https://1.www.s81c.com/common/v18/css/grid-fluid.css
https://www.ibm.com/us-en/styles/ibm-cci.css?r=1494250236082
Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 494.1KiB (26% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/products/Finance_icon.svg could save 231.3KiB (25% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/help/learning-lab.svg could save 225.3KiB (25% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/help/developer-works.svg could save 16.8KiB (84% reduction).
Compressing https://s.getsmartcontent.com/serving?tm=149426388…&c_bm=%7B%7D&dl=%7B%7D could save 5.1KiB (78% reduction).
Compressing https://js.adsrvr.org/up_loader.1.1.0.js could save 4.3KiB (59% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/help/knowledge-center.svg could save 2.5KiB (82% reduction).
Compressing https://d31qbv1cthcecs.cloudfront.net/atrk.js could save 2.2KiB (61% reduction).
Compressing https://pixel.mathtag.com/event/js?01AD=3F-a_Gz-CE…&mt_pp=1&mm_bnc&mm_bct could save 1.6KiB (61% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/products/Analytics.svg could save 1.1KiB (67% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/products/Watson.svg could save 1.1KiB (52% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/products/MobileFirst.svg could save 897B (61% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/help/support.svg could save 824B (58% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/help/training-skills.svg could save 701B (60% reduction).
Compressing https://www.ibm.com/us-en/images/homepage/products/ITInfrastructure.svg could save 571B (55% reduction).
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://js.adsrvr.org/up_loader.1.1.0.js (expiration not specified)
https://libs.coremetrics.com/configs/50200000.js (expiration not specified)
https://libs.coremetrics.com/configs/52640000.js (expiration not specified)
https://libs.coremetrics.com/ddxlibs/json-min.js (expiration not specified)
https://libs.coremetrics.com/ddxlibs/yahoo-min.js (expiration not specified)
https://libs.coremetrics.com/eluminate.js (expiration not specified)
https://tmscdn.coremetrics.com/tms/dispatcher-v3.js (expiration not specified)
https://static.hotjar.com/c/hotjar-42920.js?sv=5 (60 seconds)
https://cdn.optimizely.com/js/3867211201.js (2.1 minutes)
https://secure-ds.serving-sys.com/SemiCachedScripts/ebOneTag.js (4.6 minutes)
https://tags.tiqcdn.com/utag/ibm/web/prod/utag.js (5 minutes)
https://www.ibm.com/common/scripts/ccf/ccf-interce…back=?&_=1494263887142 (5 minutes)
https://www.ibm.com/us-en/images/homepage/cognitiv…nter_16531_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/cognitiv…nage_16533_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/cognitiv…_era_16542_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/contents…llo_16553_2000x600.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/featured…_air_16413_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/featured…Case_16548_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/featured…inar_16496_600x260.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/developer-works.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/knowledge-center.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/learning-lab.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/red-books.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/support.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/help/training-skills.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/leadspac…-ls-16438-2000x600.jpg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Analytics.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Cloud.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Commerce.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Finance_icon.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/ITInfrastructure.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/MobileFirst.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Security.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/products/Watson.svg (5 minutes)
https://www.ibm.com/us-en/images/homepage/trials/0…tics_15930_470x227.png (5 minutes)
https://www.ibm.com/us-en/images/homepage/trials/0…tics_16541_470x277.png (5 minutes)
https://www.ibm.com/us-en/images/homepage/trials/t…blockchain_470x277.png (5 minutes)
https://www.ibm.com/us-en/js/ibm-cci.js?r=1494250236082 (5 minutes)
https://www.ibm.com/us-en/js/ibm-mm-op-test.js (5 minutes)
https://www.ibm.com/us-en/styles/ibm-cci.css?r=1494250236082 (5 minutes)
https://cdn.getsmartcontent.com/K4N6C19R.js (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/530750480426306?v=2.7.6 (20 minutes)
https://data.coremetrics.com/at/rules_50200000.js (30 minutes)
https://data.coremetrics.com/at/rules_52640000.js (30 minutes)
https://tags.tiqcdn.com/utag/tiqapp/utag.v.js?a=ib…51430&cb=1494263887202 (30 minutes)
https://d1ivexoxmp59q7.cloudfront.net/ibm/live.js (60 minutes)
https://tags.tiqcdn.com/dle/ibm/web/p_55f351cc8c70…87b113d5e6f8ec9fcfe.js (60 minutes)
https://1.www.s81c.com/common/v18/css/grid-fluid.css (3.5 hours)
https://1.www.s81c.com/common/v18/js/www.js (4.5 hours)
https://1.www.s81c.com/common/v18/js/data/usen.js (4.5 hours)
https://1.www.s81c.com/common/stats/ida_stats.js (4.5 hours)
https://1.www.s81c.com/common/v18/css/www.css (5.1 hours)
https://1.www.s81c.com/common/js/dynamicnav/www/countrylist/usen-utf8.js (7.3 hours)
https://1.www.s81c.com/common/v18/js/ccftranslations.js (10.5 hours)
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://ibm.com/
http://www.ibm.com/
https://www.ibm.com/
https://www.ibm.com/us-en/
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 695B (27% reduction).
Minifying https://pixel.mathtag.com/event/js?01AD=3F-a_Gz-CE…&mt_pp=1&mm_bnc&mm_bct could save 695B (27% reduction).

ibm.com Mobile Resources


Total Resources151
Number of Hosts56
Static Resources75
JavaScript Resources66
CSS Resources4

ibm.com Mobile Resource Breakdown