3.3 sec in total
1.1 sec
2 sec
217 ms
Visit cobs.si now to see the best up-to-date COBS content for Russia and also check out these interesting facts you probably never knew about cobs.si
Visit cobs.siWe analyzed Cobs.si page load time and found that the first response time was 1.1 sec and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
cobs.si performance score
name
value
score
weighting
Value12.0 s
0/100
10%
Value17.0 s
0/100
25%
Value16.4 s
0/100
10%
Value630 ms
48/100
30%
Value0.001
100/100
15%
Value19.8 s
2/100
10%
1062 ms
255 ms
50 ms
146 ms
634 ms
Our browser made a total of 22 requests to load all elements on the main page. We found that 86% of them (19 requests) were addressed to the original Cobs.si, 9% (2 requests) were made to Google-analytics.com and 5% (1 request) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Cobs.si.
Page size can be reduced by 90.5 kB (26%)
353.1 kB
262.6 kB
In fact, the total size of Cobs.si main page is 353.1 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. Only 5% of websites need less resources to load. Images take 258.0 kB which makes up the majority of the site volume.
Potential reduce by 12.4 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. This page needs HTML code to be minified as it can gain 4.5 kB, which is 28% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 12.4 kB or 76% of the original size.
Potential reduce by 23.3 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. COBS images are well optimized though.
Potential reduce by 32.0 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 32.0 kB or 60% of the original size.
Potential reduce by 22.9 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. Cobs.si needs all CSS files to be minified and compressed as it can save up to 22.9 kB or 89% of the original size.
We found no issues to fix!
21
21
The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of COBS. According to our analytics all requests are already optimized.
cobs.si
1062 ms
cobs_style.css
255 ms
analytics.js
50 ms
cobs_background.jpg
146 ms
cobs_logo.jpg
634 ms
login_background.png
262 ms
btn_home.png
276 ms
btn_news.png
271 ms
btn_obs.png
287 ms
btn_analysis.png
329 ms
btn_statistics.png
385 ms
btn_help.png
397 ms
btn_links.png
401 ms
latest_t.jpg
732 ms
latest-lightcurve.png
776 ms
t_C2016_E2_(Kowalski)_H06_016_March_2016.jpg
510 ms
btn_more.png
526 ms
t_Comet_on_1_March_2016_NavCam.jpg
529 ms
t_Comet_on_22_February_2016_NavCam.jpg
667 ms
t_Comet_on_10_February_2016_NavCam.jpg
684 ms
collect
3 ms
collect
63 ms
cobs.si accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Links do not have a discernible name
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
cobs.si 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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
cobs.si SEO score
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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cobs.si 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 Cobs.si 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.
cobs.si
Open Graph description is not detected on the main page of COBS. 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: