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Edx.org edX | Online courses from the world's best universities

Flexible learning on your schedule. Access more than 1900 online courses from 100+ leading institutions including Harvard, MIT, Microsoft, and more. J...

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Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Edx.org receives about one hundred thousand unique visitors and five hundred thousand pageviews per day. The estimated value of edx.org is seven million USD. Each unique visitor makes about 5.27 pageviews on average.

Over the time edx.org has been ranked as high as 718 in the world, while most of its traffic comes from United States, where it reached as high as 1,370 position.

It’s good for edx.org that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.

At the time of the last check (July 04, 2019) edx.org has a valid and up-to-date wildcard SSL certificate that expires on May 06, 2020.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust edx.org is quite a safe domain.

Mobile-Friendly test indicates that edx.org is well optimized for mobile and tablet devices, however website page loading time could be improved.

Global Rank
1,273
Average Load Time
3.02sec
Links In Count
1,890
Website Value
$6.9 M
Overview
Last Updated: 09/22/2019
Overall result - "edx.org" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "edx.org" OK.

Norton ConnectSafe evaluates edx.org for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 10/10/2016
GSS "edx.org" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "edx.org".
"edx.org" is not a phishing page.
"edx.org" does not install unwanted software.
"edx.org" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "edx.org" OK.

McAfee assesses edx.org for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze edx.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "edx.org" VERY GOOD.

The WOT calculates reputation of the edx.org. This reputation system receives ratings from users and information from third-party sources, assesses the edx.org for safety features and confirms, whether edx.org is suitable for children.

SSL Information
Domain *.edx.org
Issuer Gandi Standard SSL CA 2
Algorithm RSA-SHA256
Valid form 04/02/2018
Expiration 05/06/2020
Signed Certificate is not self signed
Additional Domains *.edx.org
edx.org
Server Location
Seattle
Washington
United States
ASN Information

ASN ID: 16509
ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 05/29/2019

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

HTML Metatags
Title
edX | Online courses from the world's best universities
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
Flexible learning on your schedule. Access more than 1900 online courses from 100+ leading institutions including Harvard, MIT, Microsoft, and more. Join millions of members worldwide. Try online classes for free today.
The description has optimal length. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
en English
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Success, no any <img> without defined ALT attribute. Alt text is helpful to end users if they have images disabled or if the image does not properly load.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
Line 80, ...<h1 class="edx-logo-heading"> ...
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about.
H2
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
H5
H6
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
0.44 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Line 12, https://www.edx.org/sites/default/files/theme/favicon.png
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (/robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
39 record(s)
Other User-Agent
Not found
Default User-Agent
1 record(s)
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File Loaded successfully (/sitemap.xml)
Using a sitemap doesn't guarantee that all the items in your sitemap will be crawled and indexed, however, your site will benefit from having a sitemap.
WHOIS

Domain Name: EDX.ORG
Registry Domain ID: D80220752-LROR
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2018-10-25T16:16:17Z
Creation Date: 2001-11-25T19:02:08Z
Registry Expiry Date: 2019-11-25T19:02:08Z
Registrar Registration Expiration Date:
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: edX
Registrant State/Province: MA
Registrant Country: US
Name Server: NS-1472.AWSDNS-56.ORG
Name Server: NS-73.AWSDNS-09.COM
Name Server: NS-1753.AWSDNS-27.CO.UK
Name Server: NS-828.AWSDNS-39.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2018-11-08T12:55:23Z

DNS Records
HostA RecordTTL
edx.org13.35.99.3760
edx.org13.35.99.360
edx.org13.35.99.5960
edx.org13.35.99.4960
HostMX RecordPriorityTTL
edx.orgaspmx.l.google.com130
edx.orgaspmx2.googlemail.com1030
edx.orgms19207554.msv1.invalid3276730
edx.orgalt1.aspmx.l.google.com530
edx.orgalt2.aspmx.l.google.com530
HostNS RecordTTL
edx.orgns-1472.awsdns-56.org172800
edx.orgns-1753.awsdns-27.co.uk172800
edx.orgns-73.awsdns-09.com172800
edx.orgns-828.awsdns-39.net172800
HostTXT RecordTTL
edx.orgadobe-idp-site-verification=3f2215d19f499a970c4305a59755a6a1eb0f9850d7777a297a46db1e644e71c7300
edx.orgamazonses:0rz9BauM6+L1fwnDKUmS4nofo+8gZvTReGo5q/EliHY=300
edx.orgatlassian-domain-verification=xpq-aB5aXpxCKMr7r3eDPHyz+H8uPB16jIppdmlCIloVrhEtCrKucpx/Nnqr1xJg300
edx.orgfacebook-domain-verification=h2gg5zwnyax0dj0jyo4aafdtkpiiyu300
edx.orggoogle-site-verification=3wMRITKQ9E2388ON5mfWt98s48OBDMVzPO-7xY3U6H4300
edx.orggoogle-site-verification=J9SzlvHyrqjQP-oMpDWF6pFtUTkU0e0fQDR4Ql3OyfU300
edx.orggoogle-site-verification=VmJhKMomzXGRq96pOMWst3QD0KvnurTNsPHNhv8qt1k300
edx.orgsegment-site-verification=6Pl0HqSd1BKeHJiQjm64ZevmRYzWCtwO300
edx.orgv=spf1 include:_spf.google.com include:mail.zendesk.com include:servers.mcsv.net include:aspmx.sailthru.com include:spf1.mailgun.org include:spf2.mailgun.org ip4:23.239.13.15 ip6:2600:3c03::f03c:91ff:fe98:9a08 -all300

ns-73.awsdns-09.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 300

Errors
Line: 10 Column: 1 - 127
"...utf-8" /> <meta name="apple-itunes-app" content="app-id=945480667" app-argument="https://itunes.apple.com/us/app/edx/id945480667?mt=8" /> <meta..."
Warnings
Line: 113 Column: 43 - 62
"... <h1 id="page-title">Home ..."

Last tested: 05/15/2017

Desktop
Desktop Speed
51%
Properly formatting and compressing images can save many bytes of data.
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https://www.edx.org/sites/default/files/school/ima…/usmx_logo_200x101.jpg (24 hours)
https://www.edx.org/sites/default/files/w3c_fewd_p…overy_card_378x225.jpg (24 hours)

Your page has 10 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

https://www.edx.org/sites/default/files/js/js_ri60…iKaVkkXUQxH2MsgpmVo.js
https://cdn.optimizely.com/js/1743970571.js
https://www.edx.org/sites/default/files/js/js_OWqT…sVbYzL0dixQfV1mVyxc.js
https://www.edx.org/sites/default/files/js/js_ED5C…Bi9KCcPctIWjP4xzd14.js
https://www.edx.org/sites/default/files/js/js_6HYX…-D3ls3aXmWdHycEZL9g.js
https://www.edx.org/sites/all/themes/atedx/scripts…backbone-min.js?oq0eax
https://www.edx.org/sites/all/themes/atedx/scripts…d42ff7dcc02d.js?oq0eax
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Optimize CSS Delivery of the following:

https://www.edx.org/sites/default/files/css/css_xE…xu4WO-qwma6Xer30m4.css
https://www.edx.org/sites/default/files/css/css_mk…bhTe9MZCqn-bCpDQ_g.css
https://www.edx.org/sites/default/files/css/css_B0…wW_NJIOi-IabQVH3C4.css
https://www.edx.org/sites/default/files/css/css_8h…6Rgx7Z37V1ayypn7Us.css

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 2% of the final above-the-fold content could be rendered with the full HTML response snapshot:14.

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 4.6KiB (12% reduction).

Minifying https://www.edx.org/sites/default/files/js/js_ri60…iKaVkkXUQxH2MsgpmVo.js could save 4.6KiB (12% reduction) after compression.

Desktop Resource Breakdown
Total Resources103
Number of Hosts23
Static Resources73
JavaScript Resources30
CSS Resources4

Last tested: 05/13/2017

Mobile
Mobile Usability
97%
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 <div id="logo" class="edx-logo"></div> is close to 1 other tap targets final.
The tap target <a href="/" class="active"></a> is close to 1 other tap targets final.
The tap target <div id="primary-menu-bar" class="nav">Toggle mobile…h for a course</div> is close to 2 other tap targets final.
The tap target <div class="js-trust-bar t…-bar-container">Scroll carouse…s &amp; Partners »</div> and 2 others are close to other tap targets.
The tap target <div class="video">India to MIT:…ucation at edX</div> is close to 1 other tap targets.
The tap target <div class="video">India to MIT:…ucation at edX</div> is close to 1 other tap targets.
The tap target <a href="https://www.edx.org/about-us">About</a> and 12 others are close to other tap targets.
The tap target <a href="http://www.fac….com/EdxOnline" class="sm-link external">Like edX on Facebook</a> and 5 others are close to other tap targets.

Mobile Speed
43%
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 493.6KiB (49% reduction).

Compressing https://www.edx.org/sites/default/files/homepage/l…ages/noree_485x320.jpg could save 73.6KiB (73% reduction).
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Compressing https://www.edx.org/sites/default/files/course/ima…ed/dat101x_378x225.jpg could save 32.5KiB (69% reduction).
Compressing https://www.edx.org/sites/default/files/card/image…lystx_xseries_card.jpg could save 32.4KiB (66% reduction).
Compressing https://www.edx.org/sites/default/files/homepage/l…ages/terry_485x320.jpg could save 27.6KiB (49% reduction).
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Compressing https://www.edx.org/sites/default/files/course/ima…with_excel_378x225.jpg could save 23.5KiB (62% reduction).
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Compressing https://www.edx.org/sites/default/files/homepage/p…hip-brand_copy_0_0.png could save 21.5KiB (52% reduction).
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Compressing https://www.edx.org/sites/default/files/mm_card.jpg could save 6KiB (20% reduction).
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Compressing https://www.edx.org/sites/all/themes/atedx/images/starting-soon-arrow.png could save 777B (61% reduction).

Your page has 10 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

https://www.edx.org/sites/default/files/js/js_ri60…iKaVkkXUQxH2MsgpmVo.js
https://cdn.optimizely.com/js/1743970571.js
https://www.edx.org/sites/default/files/js/js_OWqT…sVbYzL0dixQfV1mVyxc.js
https://www.edx.org/sites/default/files/js/js_ED5C…Bi9KCcPctIWjP4xzd14.js
https://www.edx.org/sites/default/files/js/js_6HYX…-D3ls3aXmWdHycEZL9g.js
https://www.edx.org/sites/all/themes/atedx/scripts…backbone-min.js?opub7m
https://www.edx.org/sites/all/themes/atedx/scripts…fcd0ebf465a0.js?opub7m
https://www.edx.org/sites/all/themes/atedx/scripts…7ff0a84b07e2.js?opub7m
https://www.edx.org/sites/all/themes/atedx/scripts…3637aaf9b890.js?opub7m
https://www.edx.org/sites/all/themes/atedx/scripts…dfc7e95c0173.js?opub7m

Optimize CSS Delivery of the following:

https://www.edx.org/sites/default/files/css/css_xE…xu4WO-qwma6Xer30m4.css
https://www.edx.org/sites/default/files/css/css_mk…bhTe9MZCqn-bCpDQ_g.css
https://www.edx.org/sites/default/files/css/css_i1…JfDDtTkwbj60KD-gNc.css
https://www.edx.org/sites/default/files/css/css_8h…6Rgx7Z37V1ayypn7Us.css

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://ak.sail-horizon.com/onsite/personalize.v0.0.4.min.js (expiration not specified)
https://api.segment.io/v1/p (expiration not specified)
https://cdn.segment.com/analytics.js/v1/8fncv13bt5/analytics.min.js (2 minutes)
https://cdn.optimizely.com/js/1743970571.js (2.1 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-PLVRLF&l=dataLayer (15 minutes)
https://connect.facebook.net/signals/config/1601661033380488?v=2.7.9 (20 minutes)
https://s3.amazonaws.com/ki.js/59450/dj_.js (60 minutes)
https://www.dwin1.com/6798.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://js-agent.newrelic.com/nr-768.min.js (2 hours)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.edx.org/api/v1/catalog/course_runs?key…20Marketing1x%203T2015 (6 hours)
https://www.edx.org/api/v1/catalog/programs?uuids=…425a-9dcd-4a278164754a (6 hours)
https://www.edx.org/sites/all/themes/atedx/images/play-icon.png (24 hours)
https://www.edx.org/sites/all/themes/atedx/images/starting-soon-arrow.png (24 hours)
https://www.edx.org/sites/all/themes/atedx/images/verified.png (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…207d2134075f74bf557.js (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…a38aa06492adb75ad83.js (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…515b51cf820121428bf.js (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…3637aaf9b890.js?opub7m (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…dfc7e95c0173.js?opub7m (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…fcd0ebf465a0.js?opub7m (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…7ff0a84b07e2.js?opub7m (24 hours)
https://www.edx.org/sites/all/themes/atedx/scripts…backbone-min.js?opub7m (24 hours)
https://www.edx.org/sites/default/files/card/image…lystx_xseries_card.jpg (24 hours)
https://www.edx.org/sites/default/files/cardrevised.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…ed/dat101x_378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…/dat201x_thumbnail.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…/harvardsw_378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…ndamentals_378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…5x_banner378x225_0.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…x_6.00.1.x_378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…m2016.1x_-_378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/course/ima…urse_image-378x225.jpg (24 hours)
https://www.edx.org/sites/default/files/css/css_8h…6Rgx7Z37V1ayypn7Us.css (24 hours)
https://www.edx.org/sites/default/files/css/css_i1…JfDDtTkwbj60KD-gNc.css (24 hours)
https://www.edx.org/sites/default/files/css/css_mk…bhTe9MZCqn-bCpDQ_g.css (24 hours)
https://www.edx.org/sites/default/files/css/css_xE…xu4WO-qwma6Xer30m4.css (24 hours)
https://www.edx.org/sites/default/files/homepage/b…e-twothird-539x312.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/b…-prof-cert-539x290.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/l…_5birthday_485x320.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/l…ages/noree_485x320.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/l…ages/terry_485x320.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/l…es/yen_tay_485x320.jpg (24 hours)
https://www.edx.org/sites/default/files/homepage/p…mepage-promo-small.jpg (24 hours)
https://www.edx.org/sites/default/files/js/js_6HYX…-D3ls3aXmWdHycEZL9g.js (24 hours)
https://www.edx.org/sites/default/files/js/js_ED5C…Bi9KCcPctIWjP4xzd14.js (24 hours)
https://www.edx.org/sites/default/files/js/js_OWqT…sVbYzL0dixQfV1mVyxc.js (24 hours)
https://www.edx.org/sites/default/files/js/js_ri60…iKaVkkXUQxH2MsgpmVo.js (24 hours)
https://www.edx.org/sites/default/files/mm_card.jpg (24 hours)
https://www.edx.org/sites/default/files/school/ima…anu_logo_200x101_0.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…ley_logo_200x101_0.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…lft_logo_200x101_0.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…ard_logo_200x101_0.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…/ut_logo_200x101_0.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…o/adelaide-200x101.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…wthx-logo-200x101a.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…o/sorbonne-200x101.png (24 hours)
https://www.edx.org/sites/default/files/school/ima…ogo/ubcx-200x101_0.jpg (24 hours)
https://www.edx.org/sites/default/files/school/ima…/usmx_logo_200x101.jpg (24 hours)
https://www.edx.org/sites/default/files/w3c_fewd_p…overy_card_378x225.jpg (24 hours)

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 3% of the final above-the-fold content could be rendered with the full HTML response snapshot:14.

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 4.6KiB (12% reduction).

Minifying https://www.edx.org/sites/default/files/js/js_ri60…iKaVkkXUQxH2MsgpmVo.js could save 4.6KiB (12% reduction) after compression.

Mobile Resource Breakdown
Total Resources106
Number of Hosts24
Static Resources72
JavaScript Resources30
CSS Resources6
www.edx.com
www.edx.net
www.edx.org
www.edx.info
www.edx.biz
www.edx.us
www.edx.mobi
www.dx.org
www.edx.org
www.wdx.org
www.ewdx.org
www.wedx.org
www.sdx.org
www.esdx.org
www.sedx.org
www.ddx.org
www.eddx.org
www.dedx.org
www.rdx.org
www.erdx.org
www.redx.org
www.ex.org
www.exx.org
www.edxx.org
www.exdx.org
www.esx.org
www.edsx.org
www.eex.org
www.edex.org
www.eedx.org
www.erx.org
www.edrx.org
www.efx.org
www.edfx.org
www.efdx.org
www.ecx.org
www.edcx.org
www.ecdx.org
www.ed.org
www.edz.org
www.edxz.org
www.edzx.org
www.eds.org
www.edxs.org
www.edd.org
www.edxd.org
www.edc.org
www.edxc.org