2.2 sec in total
370 ms
1.7 sec
164 ms
Visit sciencezero.4hv.org now to see the best up-to-date Science Zero 4 Hv content for Russia and also check out these interesting facts you probably never knew about sciencezero.4hv.org
Visit sciencezero.4hv.orgWe analyzed Sciencezero.4hv.org page load time and found that the first response time was 370 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
sciencezero.4hv.org performance score
name
value
score
weighting
Value2.1 s
81/100
10%
Value2.6 s
87/100
25%
Value3.5 s
88/100
10%
Value180 ms
92/100
30%
Value0
100/100
15%
Value3.5 s
92/100
10%
370 ms
256 ms
304 ms
218 ms
151 ms
Our browser made a total of 13 requests to load all elements on the main page. We found that all of those requests were addressed to Sciencezero.4hv.org and no external sources were called. The less responsive or slowest element that took the longest time to load (370 ms) belongs to the original domain Sciencezero.4hv.org.
Page size can be reduced by 11.5 kB (30%)
38.1 kB
26.6 kB
In fact, the total size of Sciencezero.4hv.org main page is 38.1 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. 15% of websites need less resources to load. Images take 23.1 kB which makes up the majority of the site volume.
Potential reduce by 10.8 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 10.8 kB or 72% of the original size.
Potential reduce by 686 B
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. Science Zero 4 Hv images are well optimized though.
Number of requests can be reduced by 3 (25%)
12
9
The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Zero 4 Hv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
index.php
370 ms
load.php
256 ms
load.php
304 ms
load.php
218 ms
load.php
151 ms
Sputnik.gif
67 ms
Scopeclock.jpg
68 ms
Sparks.jpg
67 ms
Fpga.jpg
161 ms
Summer.jpg
133 ms
logo.png
130 ms
poweredby_mediawiki_88x31.png
131 ms
load.php
273 ms
sciencezero.4hv.org accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
sciencezero.4hv.org 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
sciencezero.4hv.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Document doesn't have a valid hreflang
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sciencezero.4hv.org 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 Sciencezero.4hv.org 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.
sciencezero.4hv.org
Open Graph description is not detected on the main page of Science Zero 4 Hv. 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: