Tools & Wizards About Us
adelanta.biz screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

adelanta.biz

Старинные книги, букинистика в магазине антикварных книг "Аделанта" | Аделанта

Page Load Speed

16.8 sec in total

First Response

1.8 sec

Resources Loaded

11.4 sec

Page Rendered

3.6 sec

adelanta.biz screenshot

About Website

Click here to check amazing Adelanta content for Ukraine. Otherwise, check out these important facts you probably never knew about adelanta.biz

Магазин антикварных книг Аделанта - к услугам всех российских коллекционеров-букинистов. Почтовая доставка старинных книг из магазина по всем городам России.

Visit adelanta.biz

Key Findings

We analyzed Adelanta.biz page load time and found that the first response time was 1.8 sec and then it took 15 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

adelanta.biz performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value7,590 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value18.5 s

3/100

10%

Network Requests Diagram

adelanta.biz

1769 ms

kernel_main0.css

417 ms

page_c018ab514bf940e1d6377acaefa03c060.css

262 ms

template_8961aa1a59fd2afc62d51b94715cba470.css

346 ms

jquery.fancybox.css

744 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 84% of them (87 requests) were addressed to the original Adelanta.biz, 5% (5 requests) were made to Favicon.yandex.net and 3% (3 requests) were made to An.yandex.ru. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Adelanta.biz.

Page Optimization Overview & Recommendations

Page size can be reduced by 616.7 kB (53%)

Content Size

1.2 MB

After Optimization

555.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Adelanta.biz main page is 1.2 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. HTML takes 525.2 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 452.0 kB

  • Original 525.2 kB
  • After minification 481.8 kB
  • After compression 73.2 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. 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 452.0 kB or 86% of the original size.

Image Optimization

-11%

Potential reduce by 53.6 kB

  • Original 498.2 kB
  • After minification 444.6 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, Adelanta needs image optimization as it can save up to 53.6 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-57%

Potential reduce by 33.3 kB

  • Original 58.1 kB
  • After minification 58.1 kB
  • After compression 24.8 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 33.3 kB or 57% of the original size.

CSS Optimization

-85%

Potential reduce by 78.0 kB

  • Original 91.2 kB
  • After minification 82.3 kB
  • After compression 13.2 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. Adelanta.biz needs all CSS files to be minified and compressed as it can save up to 78.0 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (32%)

Requests Now

101

After Optimization

69

  • Images
  • JavaScript
  • CSS

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Adelanta. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

adelanta.biz

adelanta.biz

1769 ms

kernel_main0.css

kernel_main0.css

417 ms

page_c018ab514bf940e1d6377acaefa03c060.css

page_c018ab514bf940e1d6377acaefa03c060.css

262 ms

template_8961aa1a59fd2afc62d51b94715cba470.css

template_8961aa1a59fd2afc62d51b94715cba470.css

346 ms

jquery.fancybox.css

jquery.fancybox.css

744 ms

jquery.snippet.min.css

jquery.snippet.min.css

267 ms

css

css

115 ms

0.gif

0.gif

318 ms

0.gif

0.gif

308 ms

menu_div.gif

menu_div.gif

366 ms

book8.png

book8.png

366 ms

appstore.png

appstore.png

301 ms

1.gif

1.gif

384 ms

2.gif

2.gif

397 ms

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390 ms

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3.gif

390 ms

4.gif

4.gif

407 ms

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517 ms

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521 ms

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527 ms

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558 ms

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1056 ms

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1063 ms

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1064 ms

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1065 ms

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1066 ms

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993 ms

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979 ms

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980 ms

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982 ms

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983 ms

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983 ms

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982 ms

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968 ms

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973 ms

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883 ms

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882 ms

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881 ms

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1789 ms

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template_6189e1c92b7e45b5ae2ae0c3bf2369df.js

3951 ms

page_ec1d077833b4ccd91e0a2835103b2dc6.js

page_ec1d077833b4ccd91e0a2835103b2dc6.js

889 ms

jquery.fancybox.js

jquery.fancybox.js

2877 ms

jquery.snippet.min.js

jquery.snippet.min.js

1159 ms

script.js

script.js

819 ms

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1372 ms

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941 ms

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1064 ms

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1172 ms

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1095 ms

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1200 ms

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1214 ms

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2121 ms

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1120 ms

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946 ms

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1102 ms

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1123 ms

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1260 ms

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1415 ms

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1268 ms

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1569 ms

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1713 ms

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1892 ms

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1811 ms

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1811 ms

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1841 ms

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1935 ms

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1939 ms

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1957 ms

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1954 ms

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1817 ms

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1745 ms

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1813 ms

logo_bg.jpg

logo_bg.jpg

1687 ms

top.gif

top.gif

3041 ms

menu_bg.gif

menu_bg.gif

1582 ms

menu_right.gif

menu_right.gif

1602 ms

content_shadow.gif

content_shadow.gif

1625 ms

ba.js

ba.js

984 ms

analytics.js

analytics.js

390 ms

context.js

context.js

334 ms

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2880 ms

collect

collect

51 ms

110986

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1489 ms

watch.js

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1 ms

x90

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400 ms

nanofizika-bio.ru

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403 ms

x90

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577 ms

school4you.ru

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582 ms

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816 ms

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819 ms

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819 ms

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378 ms

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361 ms

Accessibility Review

adelanta.biz accessibility score

60

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

adelanta.biz best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

adelanta.biz SEO score

64

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    RU

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Adelanta.biz 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 Adelanta.biz 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.

Social Sharing Optimization

adelanta.biz

Open Graph description is not detected on the main page of Adelanta. 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: