3.4 sec in total
514 ms
2.6 sec
279 ms
Click here to check amazing DVelum content for Russia. Otherwise, check out these important facts you probably never knew about dvelum.ru
Официальный сайт платформы DVelum. Описание системы dvelum, документация, примеры. Платформа быстрой разработки web-приложений
Visit dvelum.ruWe analyzed Dvelum.ru page load time and found that the first response time was 514 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
dvelum.ru performance score
name
value
score
weighting
Value1.8 s
89/100
10%
Value4.3 s
41/100
25%
Value4.2 s
77/100
10%
Value60 ms
100/100
30%
Value0
100/100
15%
Value4.7 s
80/100
10%
514 ms
130 ms
379 ms
255 ms
259 ms
Our browser made a total of 42 requests to load all elements on the main page. We found that 93% of them (39 requests) were addressed to the original Dvelum.ru, 5% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Counter.yadro.ru. The less responsive or slowest element that took the longest time to load (756 ms) belongs to the original domain Dvelum.ru.
Page size can be reduced by 76.8 kB (5%)
1.6 MB
1.6 MB
In fact, the total size of Dvelum.ru main page is 1.6 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. 20% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.
Potential reduce by 14.3 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. 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 14.3 kB or 75% of the original size.
Potential reduce by 42.2 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. DVelum images are well optimized though.
Potential reduce by 34 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 20.2 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. Dvelum.ru needs all CSS files to be minified and compressed as it can save up to 20.2 kB or 76% of the original size.
Number of requests can be reduced by 10 (25%)
40
30
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DVelum. 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 JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
dvelum.ru
514 ms
jquery.lightbox-0.5.css
130 ms
style.css
379 ms
flexslider.css
255 ms
jcarousel.css
259 ms
modernizr-1.7.min.js
266 ms
jquery-1.4.3.min.js
674 ms
jquery.lightbox-0.5.js
276 ms
jquery.sticky.js
416 ms
jquery.jcarousel.min.js
514 ms
jquery.flexslider-min.js
416 ms
jquery.anystretch.min.js
416 ms
featured-slide-13.png
756 ms
logo.large.png
629 ms
logo_phpstorm.png
529 ms
page.white.bg.jpg
141 ms
header.nav.bg.png
234 ms
logo.medium.png
253 ms
lang.png
282 ms
go_search.png
348 ms
page.black.bg.jpg
363 ms
wborder.black.bg.jpg
387 ms
main.features.png
400 ms
wborder.black.bg.bottom.jpg
413 ms
social.png
472 ms
hit
254 ms
ga.js
7 ms
header.slider.bg.jpg
704 ms
__utm.gif
12 ms
featured-2.png
670 ms
featured-8.png
426 ms
featured-12.png
254 ms
featured-1.png
417 ms
featured-3.png
570 ms
featured-4.png
259 ms
featured-14.png
386 ms
featured-5.png
392 ms
featured-11.png
520 ms
featured-6.png
528 ms
featured-7.png
553 ms
slider.control.nav.png
564 ms
slider.nav.png
646 ms
dvelum.ru 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
Form elements do not have associated labels
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
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
dvelum.ru 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
Browser errors were logged to the console
dvelum.ru 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
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
RU
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dvelum.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it does not match the claimed English language. Our system also found out that Dvelum.ru 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.
dvelum.ru
Open Graph description is not detected on the main page of DVelum. 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: