6 sec in total
1.1 sec
4.7 sec
163 ms
Click here to check amazing Central Valve content. Otherwise, check out these important facts you probably never knew about central-valve.com
central-valve.com is your first and best source for all of the information you’re looking for. From general topics to more of what you would expect to find here, central-valve.com has it all. We hope ...
Visit central-valve.comWe analyzed Central-valve.com page load time and found that the first response time was 1.1 sec and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
central-valve.com performance score
name
value
score
weighting
Value1.9 s
86/100
10%
Value2.2 s
95/100
25%
Value2.5 s
98/100
10%
Value100 ms
98/100
30%
Value0
100/100
15%
Value3.6 s
91/100
10%
1145 ms
780 ms
529 ms
531 ms
530 ms
Our browser made a total of 44 requests to load all elements on the main page. We found that 98% of them (43 requests) were addressed to the original Central-valve.com, 2% (1 request) were made to Opi.yahoo.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Central-valve.com.
Page size can be reduced by 172.9 kB (39%)
441.8 kB
268.9 kB
In fact, the total size of Central-valve.com main page is 441.8 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. 20% of websites need less resources to load. Images take 252.9 kB which makes up the majority of the site volume.
Potential reduce by 37.8 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 37.8 kB or 87% of the original size.
Potential reduce by 22.7 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. Central Valve images are well optimized though.
Potential reduce by 74.3 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 74.3 kB or 74% of the original size.
Potential reduce by 38.1 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. Central-valve.com needs all CSS files to be minified and compressed as it can save up to 38.1 kB or 83% of the original size.
Number of requests can be reduced by 20 (47%)
43
23
The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Central Valve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for CSS and as a result speed up the page load time.
central-valve.com
1145 ms
mootools.js
780 ms
template_css.css
529 ms
typo.css
531 ms
ja.vm.css
530 ms
ja.contentscroll.css
530 ms
ja.slideshow.css
531 ms
ja.script.js
793 ms
ja.splitmenu.css
800 ms
dtree.css
790 ms
dtree.js
1457 ms
show_image_in_imgtag.php
310 ms
show_image_in_imgtag.php
399 ms
show_image_in_imgtag.php
409 ms
show_image_in_imgtag.php
427 ms
show_image_in_imgtag.php
433 ms
show_image_in_imgtag.php
575 ms
online
80 ms
bullet.gif
645 ms
icon-search.gif
663 ms
header-bg.gif
671 ms
valve.jpg
1963 ms
content-center.gif
818 ms
content-bot.gif
905 ms
content-top.gif
905 ms
dot.gif
908 ms
0.gif
928 ms
3.gif
1542 ms
5.gif
1641 ms
show_image_in_imgtag.php
1174 ms
show_image_in_imgtag.php
1171 ms
show_image_in_imgtag.php
1192 ms
show_image_in_imgtag.php
1442 ms
show_image_in_imgtag.php
1440 ms
box-br.gif
1427 ms
box-bl.gif
1685 ms
box-tr.gif
1682 ms
box-tl.gif
1684 ms
h3-r.gif
1775 ms
base.gif
1249 ms
join.gif
1314 ms
page.gif
2076 ms
joinbottom.gif
1315 ms
h3-l.gif
1960 ms
central-valve.com accessibility score
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Definition list items are not wrapped in <dl> elements
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
central-valve.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
central-valve.com 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
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
Tap targets are not sized appropriately
JA
N/A
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Central-valve.com can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 Central-valve.com main page’s claimed encoding is . 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.
central-valve.com
Open Graph description is not detected on the main page of Central Valve. 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: