dropbox.com Dropbox

Mobile Usability

100/100

Good

Mobile Speed

58/100

Bad

Last tested: 2017-08-27

Rescan
dropbox.com Mobile Speed: 58/100
dropbox.com Mobile Speed Test Quick Overview

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.
http://dropbox.com/
https://dropbox.com/
https://www.dropbox.com/
Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking script resources and 22 blocking CSS resources. This causes a delay in rendering your page.
https://www.google.com/recaptcha/api.js?onload=rec…llback&render=explicit
https://www.google.com/recaptcha/api.js?onload=rec…llback&render=explicit
Optimize CSS Delivery of the following:
https://cfl.dropboxstatic.com/static/css/accessibility-vflRPMGHg.css
https://cfl.dropboxstatic.com/static/css/arbor/ele…s/button-vflh6k_Bg.css
https://cfl.dropboxstatic.com/static/css/arbor/elements/logo-vflvh3eLE.css
https://cfl.dropboxstatic.com/static/css/arbor/ele…supernav-vflLJhx3-.css
https://cfl.dropboxstatic.com/static/css/business/…ness_cta-vflv_sfMx.css
https://cfl.dropboxstatic.com/static/css/packaged/components-vflv6eeXB.css
https://cfl.dropboxstatic.com/static/css/components/button-vflQd_sRP.css
https://cfl.dropboxstatic.com/static/css/components/exp_cards-vflriIPxd.css
https://cfl.dropboxstatic.com/static/css/component…_section-vflkxW_kS.css
https://cfl.dropboxstatic.com/static/css/component…e_footer-vflWQ87Sw.css
https://cfl.dropboxstatic.com/static/css/component…gin_form-vfl5m_4f4.css
https://cfl.dropboxstatic.com/static/css/component…dia_text-vflGwc3Q0.css
https://cfl.dropboxstatic.com/static/css/dropbox/base-vflCX0Eev.css
https://cfl.dropboxstatic.com/static/css/dropbox/pages/index-vfl2ADGkB.css
https://cfl.dropboxstatic.com/static/css/helpers/r…_classes-vflX9R-EH.css
https://cfl.dropboxstatic.com/static/css/login_or_register-vflR1JDlu.css
https://cfl.dropboxstatic.com/static/css/modal-vfl3a7WF1.css
https://cfl.dropboxstatic.com/static/css/recaptcha_challenge-vflrcf67y.css
https://cfl.dropboxstatic.com/static/css/recaptcha…hallenge-vflLfwbvt.css
https://cfl.dropboxstatic.com/static/css/scooter/s…r-scoped-vfl0UVTY2.css
https://cfl.dropboxstatic.com/static/css/sprites/web_sprites-vflv2MHAO.css
https://fonts.googleapis.com/css?family=Open+Sans:…subset=latin,latin-ext
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://b92.yahoo.co.jp/js/s_retargeting.js (expiration not specified)
https://s.yimg.com/wi/ytc.js (expiration not specified)
https://snap.licdn.com/li.lms-analytics/insight.min.js (expiration not specified)
https://www.google.com/recaptcha/api.js?onload=rec…llback&render=explicit (5 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-K8WT2R (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/1097950916987081?v=2.7.6 (20 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
Reduce server response time

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 1.3KiB (13% reduction).
Minifying https://cfl.dropboxstatic.com/static/css/sprites/web_sprites-vflv2MHAO.css could save 1.3KiB (13% reduction) after compression.
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 911B (51% reduction).
Compressing https://marketing.dropbox.com/?referrer= could save 911B (51% reduction).

dropbox.com Mobile Resources


Total Resources158
Number of Hosts27
Static Resources115
JavaScript Resources51
CSS Resources22

dropbox.com Mobile Resource Breakdown