3.3 sec in total
188 ms
2.7 sec
394 ms
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VonKelemen | Tuition Free Online Learning Community
Visit vonkelemen.comWe analyzed Vonkelemen.com page load time and found that the first response time was 188 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
vonkelemen.com performance score
name
value
score
weighting
Value7.4 s
1/100
10%
Value15.3 s
0/100
25%
Value11.7 s
4/100
10%
Value780 ms
37/100
30%
Value0.018
100/100
15%
Value14.1 s
10/100
10%
188 ms
124 ms
127 ms
996 ms
2049 ms
Our browser made a total of 47 requests to load all elements on the main page. We found that 81% of them (38 requests) were addressed to the original Vonkelemen.com, 9% (4 requests) were made to Ajax.googleapis.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Vonkelemen.com.
Page size can be reduced by 469.4 kB (23%)
2.0 MB
1.5 MB
In fact, the total size of Vonkelemen.com main page is 2.0 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. 35% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 32.3 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 14.3 kB, which is 37% 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 32.3 kB or 84% of the original size.
Potential reduce by 57.0 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. Vonkelemen images are well optimized though.
Potential reduce by 179.5 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 179.5 kB or 65% of the original size.
Potential reduce by 200.6 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. Vonkelemen.com needs all CSS files to be minified and compressed as it can save up to 200.6 kB or 88% of the original size.
Number of requests can be reduced by 29 (66%)
44
15
The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vonkelemen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.
vonkelemen.com
188 ms
default.css
124 ms
component.css
127 ms
normalize.min.css
996 ms
main.css
2049 ms
bgd-changer.css
2099 ms
prettyPhoto.css
2123 ms
modernizr-2.6.2.min.js
172 ms
font-awesome.css
11 ms
stylesheet.css
93 ms
fwr_suckertree_css_menu.css
67 ms
no_javascript.css
66 ms
stylesheet_fallback.css
99 ms
menu.css
66 ms
videolightbox.css
65 ms
overlay-minimal.css
96 ms
jquery.js
144 ms
swfobject.js
96 ms
jquery.js
97 ms
jquery-ui.min.js
95 ms
flipbook.style.css
164 ms
font-awesome.css
190 ms
flipbook.min.js
243 ms
jquery.min.js
66 ms
cbpHorizontalMenu.min.js
186 ms
jsapi
24 ms
showcase.2.0.js
60 ms
jquery.tools.min.js
212 ms
videolightbox.js
236 ms
css
24 ms
ga.js
71 ms
vk_bck_w.png
46 ms
icon.gif
54 ms
icon.gif
55 ms
topmenusprite.png
39 ms
logo.png
40 ms
bag.png
92 ms
VK_Facebook.png
39 ms
VK_YouTube.png
39 ms
VK_footer.png
46 ms
__utm.gif
13 ms
defaultBrandedR.png
95 ms
3-2015-1.jpg
226 ms
vk_bck_b.png
27 ms
jquery.min.js
24 ms
3-2015-2.jpg
211 ms
3-2015-3.jpg
214 ms
vonkelemen.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
vonkelemen.com 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
Missing source maps for large first-party JavaScript
vonkelemen.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 doesn't use legible font sizes
Tap targets are not sized appropriately
ES
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vonkelemen.com can be misinterpreted by Google and other search engines. Our service has detected that Spanish is used on the page, and it does not match the claimed English language. Our system also found out that Vonkelemen.com main page’s claimed encoding is iso-8859-1. 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.
vonkelemen.com
Open Graph description is not detected on the main page of Vonkelemen. 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: