3.2 sec in total
326 ms
2.5 sec
395 ms
Visit periodicvideos.org now to see the best up-to-date Periodic Videos content and also check out these interesting facts you probably never knew about periodicvideos.org
Short videos about every element on the periodic table, plus other cool experiments and chemistry stuff
Visit periodicvideos.orgWe analyzed Periodicvideos.org page load time and found that the first response time was 326 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.
periodicvideos.org performance score
name
value
score
weighting
Value1.6 s
94/100
10%
Value6.0 s
13/100
25%
Value9.4 s
12/100
10%
Value11,570 ms
0/100
30%
Value0.032
100/100
15%
Value24.0 s
1/100
10%
326 ms
6 ms
12 ms
193 ms
233 ms
Our browser made a total of 158 requests to load all elements on the main page. We found that 90% of them (142 requests) were addressed to the original Periodicvideos.org, 7% (11 requests) were made to Platform.twitter.com and 2% (3 requests) were made to Syndication.twitter.com. The less responsive or slowest element that took the longest time to load (742 ms) belongs to the original domain Periodicvideos.org.
Page size can be reduced by 85.1 kB (29%)
294.6 kB
209.5 kB
In fact, the total size of Periodicvideos.org main page is 294.6 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. 35% of websites need less resources to load. Images take 241.4 kB which makes up the majority of the site volume.
Potential reduce by 29.6 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 29.6 kB or 82% of the original size.
Potential reduce by 55.4 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. Obviously, Periodic Videos needs image optimization as it can save up to 55.4 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 34 B
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. This website has mostly compressed JavaScripts.
Number of requests can be reduced by 125 (80%)
157
32
The browser has sent 157 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Periodic Videos. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.
periodicvideos.org
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periodicvideos.org 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
periodicvideos.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
periodicvideos.org SEO score
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
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Periodicvideos.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Periodicvideos.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
periodicvideos.org
Open Graph description is not detected on the main page of Periodic Videos. 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: