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Welcome to school30.spb.ru homepage info - get ready to check School 30 Spb best content for Russia right away, or after learning these important things about school30.spb.ru
Visit school30.spb.ruWe analyzed School30.spb.ru page load time and found that the first response time was 1.3 sec and then it took 12.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
school30.spb.ru performance score
name
value
score
weighting
Value2.5 s
67/100
10%
Value2.5 s
90/100
25%
Value3.7 s
85/100
10%
Value160 ms
94/100
30%
Value0.219
57/100
15%
Value7.8 s
45/100
10%
1321 ms
757 ms
254 ms
257 ms
1642 ms
Our browser made a total of 99 requests to load all elements on the main page. We found that 89% of them (88 requests) were addressed to the original School30.spb.ru, 4% (4 requests) were made to Mc.yandex.ru and 2% (2 requests) were made to U3794.13.spylog.com. The less responsive or slowest element that took the longest time to load (7.1 sec) belongs to the original domain School30.spb.ru.
Page size can be reduced by 640.2 kB (26%)
2.5 MB
1.8 MB
In fact, the total size of School30.spb.ru main page is 2.5 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. 40% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.
Potential reduce by 82.6 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 33.2 kB, which is 33% 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 82.6 kB or 83% of the original size.
Potential reduce by 278.6 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. Obviously, School 30 Spb needs image optimization as it can save up to 278.6 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 124.1 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 124.1 kB or 66% of the original size.
Potential reduce by 154.9 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. School30.spb.ru needs all CSS files to be minified and compressed as it can save up to 154.9 kB or 87% of the original size.
Number of requests can be reduced by 15 (16%)
95
80
The browser has sent 95 CSS, Javascripts, AJAX and image requests in order to completely render the main page of School 30 Spb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
school30.spb.ru
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school30.spb.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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
Links do not have a discernible name
school30.spb.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
school30.spb.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
N/A
WINDOWS-1251
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise School30.spb.ru can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 School30.spb.ru main page’s claimed encoding is windows-1251. 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.
school30.spb.ru
Open Graph description is not detected on the main page of School 30 Spb. 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: