7.6 sec in total
1 sec
5.5 sec
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Visit opt-centr.com now to see the best up-to-date Opt Centr content for Ukraine and also check out these interesting facts you probably never knew about opt-centr.com
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Visit opt-centr.comWe analyzed Opt-centr.com page load time and found that the first response time was 1 sec and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
opt-centr.com performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value10.5 s
0/100
25%
Value10.1 s
9/100
10%
Value14,310 ms
0/100
30%
Value0
100/100
15%
Value20.5 s
2/100
10%
1042 ms
187 ms
477 ms
329 ms
98 ms
Our browser made a total of 111 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Opt-centr.com, 23% (25 requests) were made to Images.ua.prom.st and 14% (16 requests) were made to Static-cache.ua.uaprom.net. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Images.ua.prom.st.
Page size can be reduced by 295.4 kB (7%)
4.0 MB
3.7 MB
In fact, the total size of Opt-centr.com main page is 4.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 3.5 MB which makes up the majority of the site volume.
Potential reduce by 134.9 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 134.9 kB or 83% of the original size.
Potential reduce by 20.4 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. Opt Centr images are well optimized though.
Potential reduce by 46.5 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 46.5 kB or 25% of the original size.
Potential reduce by 93.5 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. Opt-centr.com needs all CSS files to be minified and compressed as it can save up to 93.5 kB or 83% of the original size.
Number of requests can be reduced by 49 (49%)
100
51
The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opt Centr. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
opt-centr.com
1042 ms
adv_teasers.js
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member_common.styl.css
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imagebox.css
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design.css
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ld.js
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commons.js
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companysite_wp.js
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css
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bare-legacy.js
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iframe-legacy.html
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iframe
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watch.js
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wormhole_wp.js
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dis.aspx
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plusone.js
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all.js
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opt-centr.com 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.
opt-centr.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
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
opt-centr.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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
N/A
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opt-centr.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Opt-centr.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.
opt-centr.com
Open Graph description is not detected on the main page of Opt Centr. 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: