4.1 sec in total
1.4 sec
2.5 sec
224 ms
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Visit teachingscience20.comWe analyzed Teachingscience20.com page load time and found that the first response time was 1.4 sec and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
teachingscience20.com performance score
name
value
score
weighting
Value4.5 s
15/100
10%
Value9.9 s
0/100
25%
Value6.3 s
42/100
10%
Value1,260 ms
19/100
30%
Value0.099
90/100
15%
Value18.4 s
3/100
10%
1369 ms
175 ms
51 ms
172 ms
172 ms
Our browser made a total of 67 requests to load all elements on the main page. We found that 48% of them (32 requests) were addressed to the original Teachingscience20.com, 15% (10 requests) were made to Apis.google.com and 7% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Teachingscience20.com.
Page size can be reduced by 294.8 kB (54%)
548.6 kB
253.8 kB
In fact, the total size of Teachingscience20.com main page is 548.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Javascripts take 227.8 kB which makes up the majority of the site volume.
Potential reduce by 33.0 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 33.0 kB or 80% of the original size.
Potential reduce by 2.0 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. Teachingscience 20 images are well optimized though.
Potential reduce by 154.8 kB
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 154.8 kB or 68% of the original size.
Potential reduce by 104.9 kB
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. Teachingscience20.com needs all CSS files to be minified and compressed as it can save up to 104.9 kB or 86% of the original size.
Number of requests can be reduced by 36 (59%)
61
25
The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Teachingscience 20. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
teachingscience20.com
1369 ms
style.css
175 ms
css
51 ms
sociable.css
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style-responsive.css
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smallhead.css
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stats-css.css
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plusone.js
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jquery.js
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jquery-migrate.min.js
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sociable.js
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vuible.js
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addtofavorites.js
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jquery.cookie.js
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plusone.js
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widgets.js
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in.js
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hostedbadge.php
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comment-reply.min.js
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jquery.jplayer.min.js
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jquery.flexslider.min.js
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jquery.isotope.min.js
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jquery.fancybox.pack.js
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jquery.fancybox-media.js
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jquery.mousewheel-3.0.6.pack.js
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jquery.theme.js
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cb=gapi.loaded_0
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bg.png
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header-top.png
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page-title.png
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clarita-home-candy-molds.jpg
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manual-coffee-grinder-review-300x300.jpg
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closelabel.png
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vuible.png
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cb=gapi.loaded_1
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fastbutton
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cb=gapi.loaded_0
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widgets.js
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noise.png
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button.0308b81ff1714e446f674b5b9793f2cd.js
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teachingscience20.com accessibility score
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
teachingscience20.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
teachingscience20.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Page is blocked from indexing
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
ZH
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Teachingscience20.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Teachingscience20.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.
teachingscience20.com
Open Graph data is detected on the main page of Teachingscience 20. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: