9.3 sec in total
Welcome to history.drofa-ventana.ru homepage info - get ready to check History Drofa Ventana best content for Russia right away, or after learning these important things about history.drofa-ventana.ru
На сайте объединенной издательской группы Дрофа – Вентана-граф представлена подробная информация о серии Линия УМК И. Л. Андреева, О. В. Волобуева. История (6-10): все компоненты, описание, видео, мет...Visit history.drofa-ventana.ru
We analyzed History.drofa-ventana.ru page load time and found that the first response time was 627 ms and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
history.drofa-ventana.ru performance score
Our browser made a total of 166 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original History.drofa-ventana.ru, 63% (104 requests) were made to Cdn.rosuchebnik.ru and 21% (35 requests) were made to Rosuchebnik.ru. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Cdn.rosuchebnik.ru.
Page size can be reduced by 180.0 kB (55%)
In fact, the total size of History.drofa-ventana.ru main page is 328.2 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. 25% of websites need less resources to load. HTML takes 202.4 kB which makes up the majority of the site volume.
Potential reduce by 179.2 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 38.0 kB, which is 19% 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 179.2 kB or 89% of the original size.
Potential reduce by 266 B
Potential reduce by 568 B
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. History.drofa-ventana.ru needs all CSS files to be minified and compressed as it can save up to 568 B or 75% of the original size.
Number of requests can be reduced by 8 (44%)
history.drofa-ventana.ru accessibility score
Names and labels
Buttons do not have an accessible name
Links do not have a discernible name
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
These are opportunities to improve keyboard navigation in your application.
[id] attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
history.drofa-ventana.ru best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Displays images with incorrect aspect ratio
Browser errors were logged to the console
history.drofa-ventana.ru SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Document uses legible font sizes
Tap targets are not sized appropriately
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise History.drofa-ventana.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian is used on the page, and it matches the claimed language. Our system also found out that History.drofa-ventana.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.
Open Graph description is not detected on the main page of History Drofa Ventana. 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: