3.4 sec in total
499 ms
2.8 sec
144 ms
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Visit openclass.comWe analyzed Openclass.com page load time and found that the first response time was 499 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
openclass.com performance score
name
value
score
weighting
Value6.9 s
1/100
10%
Value7.0 s
6/100
25%
Value9.7 s
10/100
10%
Value2,650 ms
4/100
30%
Value0.05
99/100
15%
Value20.1 s
2/100
10%
499 ms
456 ms
8 ms
15 ms
99 ms
Our browser made a total of 52 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Openclass.com, 6% (3 requests) were made to Google-analytics.com and 4% (2 requests) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (889 ms) relates to the external source Pearson.mcxplatform.de.
Page size can be reduced by 2.5 MB (74%)
3.4 MB
889.1 kB
In fact, the total size of Openclass.com main page is 3.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. Javascripts take 2.0 MB which makes up the majority of the site volume.
Potential reduce by 21.4 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 21.4 kB or 71% of the original size.
Potential reduce by 3.2 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Openclass images are well optimized though.
Potential reduce by 1.4 MB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 1.4 MB or 72% of the original size.
Potential reduce by 1.0 MB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Openclass.com needs all CSS files to be minified and compressed as it can save up to 1.0 MB or 90% of the original size.
Number of requests can be reduced by 38 (79%)
48
10
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Openclass. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
openclass.html
499 ms
openclass.html
456 ms
font-awesome.min.d196b79cc739d07e25a67b2703f0914d.css
8 ms
bootstrap.min.16a0c30f4426e6628ebb6c37450ac583.css
15 ms
dev.min.652e34d54386832983674af8d78bdcff.css
99 ms
us.min.a956607f74194082bc00de3e46f11392.css
32 ms
youtube-video.min.c21ea7c7ead7ae66b43bb942c24a1a61.css
20 ms
jquery.min.320c331d3619d3e998ed3768a1b7b6ad.js
28 ms
dev.min.b8892ddd49ca474164467ce609667036.js
43 ms
us.min.d82b0b2cf02dae9c6c86a104657c5e2c.js
38 ms
jquery-ui.min.a8017e9497387e4a9e47414d5e39193b.js
43 ms
bootstrap.min.826ef3d83c805c26d53557a61cd56597.js
37 ms
picturefill.min.ced8165bfc3ea593bfdaeb3a8cfd5260.js
36 ms
parsley.min.631dfbd5d0abf32fdc4f09ce7bb71c0f.js
44 ms
jquery-mobile.min.8ad60653c410ddef49ab208c22e0c82a.js
41 ms
jquery-cookie.min.154b7fccefa772f5fd360b22a64b5d9c.js
43 ms
form-validator.min.b40de3ca4495006ae032ee07338c8c38.js
72 ms
underscore.min.edc33caf36b672e930df0e129b9c76d5.js
64 ms
backbone.min.2fec6c5d1caa763049926a36025dc03b.js
65 ms
template-settings.min.261f498130033da3b40633a6f6fe6750.js
70 ms
instant-search.min.2177a0a724dfe3a7915c4ce181061004.js
187 ms
components.min.1b46ff482f58387b699ea6ea1e7ad121.js
74 ms
search.min.4c29fdf27e694c27405c8de02698bb69.js
71 ms
satelliteLib-098becae4fa3f23380a5616843865f565efe7ff7.js
22 ms
gtm.js
49 ms
ic_bookbag--chalk-white.svg
26 ms
ic_chevron.svg
23 ms
ic_External_Link.svg
23 ms
clientExtensibility.js
889 ms
s-code-contents-28a69d45c3b31de695313ba78182b6dea00ba8fa.js
10 ms
iframe_api
41 ms
analytics.js
27 ms
s24742380988318
7 ms
www-widgetapi.js
26 ms
collect
11 ms
collect
45 ms
ga-audiences
32 ms
pearson_logo_white_bg.svg
142 ms
mcxSiteIntercept-1.6.1.js
130 ms
pearsonlogo.png
216 ms
ic_dro-down_nav.svg
15 ms
BiXtRZIv.min.js
32 ms
ect.html
57 ms
pixel
20 ms
pixel
18 ms
ip.json
64 ms
collect
2 ms
ic_Search.svg
31 ms
pd.js
268 ms
us.svg
14 ms
gb.svg
13 ms
ca.svg
12 ms
openclass.com accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
openclass.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
openclass.com SEO score
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Openclass.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Openclass.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
openclass.com
Open Graph description is not detected on the main page of Openclass. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: