4.6 sec in total
1.7 sec
2 sec
930 ms
Visit 21stcenturysciencetech.com now to see the best up-to-date 21st Century Sciencetech content for United States and also check out these interesting facts you probably never knew about 21stcenturysciencetech.com
Visit 21stcenturysciencetech.comWe analyzed 21stcenturysciencetech.com page load time and found that the first response time was 1.7 sec 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.
21stcenturysciencetech.com performance score
name
value
score
weighting
Value1.7 s
92/100
10%
Value4.1 s
47/100
25%
Value1.7 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value1.7 s
100/100
10%
1710 ms
113 ms
85 ms
59 ms
60 ms
Our browser made a total of 47 requests to load all elements on the main page. We found that all of those requests were addressed to 21stcenturysciencetech.com and no external sources were called. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain 21stcenturysciencetech.com.
Page size can be reduced by 86.2 kB (13%)
662.9 kB
576.7 kB
In fact, the total size of 21stcenturysciencetech.com main page is 662.9 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 600.1 kB which makes up the majority of the site volume.
Potential reduce by 51.1 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 51.1 kB or 81% of the original size.
Potential reduce by 35.1 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. 21st Century Sciencetech images are well optimized though.
We found no issues to fix!
46
46
The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 21st Century Sciencetech. According to our analytics all requests are already optimized.
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21stcenturysciencetech.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
21stcenturysciencetech.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
21stcenturysciencetech.com 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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21stcenturysciencetech.com 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 21stcenturysciencetech.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.
{{og_description}}
21stcenturysciencetech.com
Open Graph description is not detected on the main page of 21st Century Sciencetech. 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: