Tools & Wizards About Us
csl.bas-net.by screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

csl.bas-net.by

Центральная научная библиотека имени Якуба Коласа НАН Беларуси

Page Load Speed

7.4 sec in total

First Response

1.2 sec

Resources Loaded

5.6 sec

Page Rendered

626 ms

csl.bas-net.by screenshot

About Website

Welcome to csl.bas-net.by homepage info - get ready to check Csl Bas Net best content for Belarus right away, or after learning these important things about csl.bas-net.by

Ведущая научная библиотека Республики Беларусь, ориентированная на обслуживание ученых и исследователей, аспирантов, преподавателей и всех, кто интересуется наукой.

Visit csl.bas-net.by

Key Findings

We analyzed Csl.bas-net.by page load time and found that the first response time was 1.2 sec and then it took 6.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

csl.bas-net.by performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value17.0 s

0/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value2,190 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.039

99/100

15%

TTI (Time to Interactive)

Value20.7 s

2/100

10%

Network Requests Diagram

csl.bas-net.by

1166 ms

js.cookie.min.js

127 ms

vendor.min.css

254 ms

bvi.min.css

382 ms

style.css

793 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 72% of them (79 requests) were addressed to the original Csl.bas-net.by, 6% (6 requests) were made to Fonts.gstatic.com and 4% (4 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Csl.bas-net.by.

Page Optimization Overview & Recommendations

Page size can be reduced by 812.1 kB (13%)

Content Size

6.3 MB

After Optimization

5.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Csl.bas-net.by main page is 6.3 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. 65% of websites need less resources to load. Images take 5.5 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 76.6 kB

  • Original 99.6 kB
  • After minification 85.7 kB
  • After compression 23.0 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 13.9 kB, which is 14% 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 76.6 kB or 77% of the original size.

Image Optimization

-12%

Potential reduce by 665.7 kB

  • Original 5.5 MB
  • After minification 4.8 MB

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, Csl Bas Net needs image optimization as it can save up to 665.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-7%

Potential reduce by 51.5 kB

  • Original 725.9 kB
  • After minification 712.3 kB
  • After compression 674.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-38%

Potential reduce by 18.3 kB

  • Original 48.6 kB
  • After minification 48.6 kB
  • After compression 30.3 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. Csl.bas-net.by needs all CSS files to be minified and compressed as it can save up to 18.3 kB or 38% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (25%)

Requests Now

102

After Optimization

76

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csl Bas Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

csl.bas-net.by

csl.bas-net.by

1166 ms

js.cookie.min.js

js.cookie.min.js

127 ms

vendor.min.css

vendor.min.css

254 ms

bvi.min.css

bvi.min.css

382 ms

style.css

style.css

793 ms

css2

css2

43 ms

cse.js

cse.js

58 ms

jquery-1.12.4.min.js

jquery-1.12.4.min.js

966 ms

bootstrap.min.js

bootstrap.min.js

838 ms

slick.min.js

slick.min.js

677 ms

jquery.meanmenu.js

jquery.meanmenu.js

595 ms

js.cookie.js

js.cookie.js

505 ms

bvi.min.js

bvi.min.js

631 ms

bvi-init-panel.js

bvi-init-panel.js

743 ms

app.js

app.js

760 ms

oV41f1sp6Y

oV41f1sp6Y

384 ms

gtm.js

gtm.js

107 ms

logo.svg

logo.svg

179 ms

time.svg

time.svg

182 ms

publ.png

publ.png

163 ms

list_lit.png

list_lit.png

182 ms

spravka.png

spravka.png

178 ms

index.png

index.png

362 ms

edd.png

edd.png

363 ms

vhs.png

vhs.png

363 ms

banner3.jpg

banner3.jpg

1346 ms

febas.jpg

febas.jpg

825 ms

geneology-24-09-19.jpg

geneology-24-09-19.jpg

879 ms

krutko-nikolay-pavlovich.jpg

krutko-nikolay-pavlovich.jpg

648 ms

ico-cat1.png

ico-cat1.png

674 ms

sek.png

sek.png

526 ms

edd.png

edd.png

672 ms

vspravka.png

vspravka.png

775 ms

new-clipart2.png

new-clipart2.png

948 ms

smi.png

smi.png

854 ms

period.png

period.png

909 ms

vvistavka.png

vvistavka.png

964 ms

WiFi.png

WiFi.png

1006 ms

god-kachestva.jpg

god-kachestva.jpg

1015 ms

3.png

3.png

1035 ms

5.png

5.png

1117 ms

7.png

7.png

1118 ms

6.png

6.png

1154 ms

2.png

2.png

1150 ms

0.png

0.png

1160 ms

rukopisi-project.jpg

rukopisi-project.jpg

1214 ms

inbelcult.png

inbelcult.png

1636 ms

1.jpg

1.jpg

1287 ms

2.png

2.png

1600 ms

3.png

3.png

1412 ms

4.png

4.png

1453 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

66 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjr0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjr0C4k.woff

127 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

329 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

405 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

405 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4k.woff

406 ms

5.png

5.png

1529 ms

cse_element__ru.js

cse_element__ru.js

37 ms

default+ru.css

default+ru.css

94 ms

default.css

default.css

125 ms

js

js

219 ms

analytics.js

analytics.js

340 ms

tag.js

tag.js

925 ms

code.js

code.js

968 ms

6.png

6.png

1449 ms

7.png

7.png

1492 ms

8.png

8.png

1834 ms

9.png

9.png

1519 ms

d1.png

d1.png

1723 ms

async-ads.js

async-ads.js

165 ms

branding.png

branding.png

125 ms

tg-footer.svg

tg-footer.svg

1393 ms

oV41f1sp6Y

oV41f1sp6Y

543 ms

facebook-footer.svg

facebook-footer.svg

1413 ms

insta-footer.svg

insta-footer.svg

1434 ms

youtube-footer.svg

youtube-footer.svg

1474 ms

collect

collect

31 ms

prezident.jpg

prezident.jpg

1350 ms

collect

collect

14 ms

pravitelstvo.jpg

pravitelstvo.jpg

1260 ms

library.jpg

library.jpg

1251 ms

adm_proc.png

adm_proc.png

1297 ms

pravo.gif

pravo.gif

1233 ms

erip-logo.jpg

erip-logo.jpg

1229 ms

nii.png

nii.png

1187 ms

nauka.png

nauka.png

1167 ms

oV41f1sp6Y

oV41f1sp6Y

530 ms

pravo.jpg

pravo.jpg

1197 ms

nas-univer.jpg

nas-univer.jpg

1191 ms

paysys.png

paysys.png

1181 ms

new-24-05-18.jpg

new-24-05-18.jpg

1314 ms

new-24-05-16.jpg

new-24-05-16.jpg

1331 ms

rare-victory-ex-24.jpg

rare-victory-ex-24.jpg

1328 ms

victory21.jpg

victory21.jpg

1414 ms

new-24-05-02.jpg

new-24-05-02.jpg

1304 ms

sync-loader.js

sync-loader.js

924 ms

counter

counter

143 ms

dyn-goal-config.js

dyn-goal-config.js

283 ms

advert.gif

advert.gif

568 ms

new-24-04-29.jpg

new-24-04-29.jpg

1266 ms

gurskiy-125.jpg

gurskiy-125.jpg

1445 ms

kant-300.jpg

kant-300.jpg

1452 ms

art-lection.jpg

art-lection.jpg

1458 ms

fon.jpg

fon.jpg

1666 ms

sl-disable.png

sl-disable.png

1211 ms

1

1

141 ms

bundle_ru_RU.js

bundle_ru_RU.js

76 ms

tracker

tracker

144 ms

Accessibility Review

csl.bas-net.by accessibility score

80

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Best Practices

csl.bas-net.by best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

csl.bas-net.by SEO score

92

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

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Csl.bas-net.by 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 Csl.bas-net.by 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

csl.bas-net.by

Open Graph data is detected on the main page of Csl Bas Net. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: