jelv.is: Tikhon Jelvis | jelv.is
Page load speed analysis
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63/100
Normal result -
7
Successful tests -
1
Failed test
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First response
664 ms
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Resources loaded
1.1 sec
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Page rendered
305 ms
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Total page load time
2.1 sec
Visit jelv.is now to see the best up-to-date Jelv content for United States and also check out these interesting facts you probably never knew about jelv.is
We analyzed Jelv.is page load time and found that the first response time was 664 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.
Page optimization
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HTML 17.3 kB Images 173.7 kB Javascripts 345.5 kB CSS 11.4 kB In fact, the total size of Jelv.is main page is 547.9 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. Javascripts take 345.5 kB which makes up the majority of the site volume.
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Original 17.3 kB
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After minification 16.8 kB
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After compression 4.9 kB
HTML optimization
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 12.4 kB or 72% of the original size.
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Original 173.7 kB
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After optimization 172.1 kB
Image optimization
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. Jelv images are well optimized though.
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Original 345.5 kB
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After minification 345.5 kB
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After compression 103.8 kB
JavaScript optimization
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 241.7 kB or 70% of the original size.
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Original 11.4 kB
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After minification 11.1 kB
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After compression 3.4 kB
CSS optimization
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. Jelv.is needs all CSS files to be minified and compressed as it can save up to 8.0 kB or 70% of the original size.
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Network requests diagram
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jelv.is
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jquery.js
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hide.js
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code-highlighting.js
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reset.css
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fonts.css
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navigation.css
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header.css
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main.css
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syntax.css
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blog.css
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MathJax.js
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css
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TeX-AMS-MML_HTMLorMML.js
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ga.js
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me_with_monkey.jpg
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valid-xhtml11-blue
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vcss-blue
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Junction-webfont.woff
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aller_rg-webfont.woff
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aller_bd-webfont.woff
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__utm.gif
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88x31.png
Our browser made a total of 23 requests to load all elements on the main page. We found that 65% of them (15 requests) were addressed to the original Jelv.is, 9% (2 requests) were made to Cdn.mathjax.org and 9% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (664 ms) belongs to the original domain Jelv.is.
Additional info on jelv.is
Requests
The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jelv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for CSS and as a result speed up the page load time.
Javascripts
Images
CSS
AJAX
All
Possible request optimization
Javascripts
Images
CSS
AJAX
Optimized
All
Good result
IP address
Jelv.is uses IP addresses which are currently shared with 15 other domains. The more sites share the same stack of IP addresses, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.
Normal result
IP Trace
DNS records
| Type | Host | Target/ip | TTL | Other |
|---|---|---|---|---|
| A | jelv.is |
204.246.190.102 | 60 | |
| A | jelv.is |
204.246.190.63 | 60 | |
| A | jelv.is |
204.246.190.37 | 60 | |
| A | jelv.is |
204.246.190.76 | 60 | |
| NS | jelv.is |
ns-1529.awsdns-63.org | 86400 |
HTTPS certificate
Jelv.is has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.
Normal result
Visitor World Map
Country of origin for 15.4% of all visits is United States. It’s good for Jelv.is that their server is also located in United States, as that enables the majority of their visitors to benefit from a much faster page load time.
Good result
Poor result
Social Sharing Optimization
Open Graph description is not detected on the main page of Jelv. 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:
jelv.is
Language and encoding
Normal result
Language
EN
Detected
N/A
Claimed
Encoding
UTF-8
Claimed
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jelv.is 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 Jelv.is 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.
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