Tools & Wizards About Us
korisnaknjiga.com screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

korisnaknjiga.com

Korisna knjiga – najraznovrsniji izbor knjiga na internetu

Page Load Speed

6.3 sec in total

First Response

312 ms

Resources Loaded

5.6 sec

Page Rendered

357 ms

korisnaknjiga.com screenshot

About Website

Welcome to korisnaknjiga.com homepage info - get ready to check Korisna Knjiga best content for Serbia right away, or after learning these important things about korisnaknjiga.com

✔ Više od 150.000 knjiga u ponudi ✔ Nove i polovne knjige ✔ Nabavka inostranih izdanja ✔ Lako poručivanje udžbenika

Visit korisnaknjiga.com

Key Findings

We analyzed Korisnaknjiga.com page load time and found that the first response time was 312 ms and then it took 6 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

korisnaknjiga.com performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value16.6 s

0/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value1,200 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

korisnaknjiga.com

312 ms

korisnaknjiga.com

506 ms

www.korisnaknjiga.com

2399 ms

css

35 ms

global_002.css

125 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 85% of them (70 requests) were addressed to the original Korisnaknjiga.com, 4% (3 requests) were made to Connect.facebook.net and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Korisnaknjiga.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 792.2 kB (36%)

Content Size

2.2 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Korisnaknjiga.com main page is 2.2 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. 65% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 65.2 kB

  • Original 79.5 kB
  • After minification 61.7 kB
  • After compression 14.2 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 17.8 kB, which is 22% 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 65.2 kB or 82% of the original size.

Image Optimization

-36%

Potential reduce by 723.2 kB

  • Original 2.0 MB
  • After minification 1.3 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, Korisna Knjiga needs image optimization as it can save up to 723.2 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 1.4 kB

  • Original 40.5 kB
  • After minification 40.5 kB
  • After compression 39.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-8%

Potential reduce by 2.4 kB

  • Original 30.0 kB
  • After minification 30.0 kB
  • After compression 27.6 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. Korisnaknjiga.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (19%)

Requests Now

78

After Optimization

63

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Korisna Knjiga. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

korisnaknjiga.com

korisnaknjiga.com

312 ms

korisnaknjiga.com

korisnaknjiga.com

506 ms

www.korisnaknjiga.com

www.korisnaknjiga.com

2399 ms

css

css

35 ms

global_002.css

global_002.css

125 ms

media_001.css

media_001.css

257 ms

mobile_001.css

mobile_001.css

360 ms

tablet_001.css

tablet_001.css

363 ms

override_07.css

override_07.css

377 ms

marko_01.css

marko_01.css

370 ms

jquery-mini.js

jquery-mini.js

496 ms

jquery.js

jquery.js

382 ms

js_by_RJ_003.js

js_by_RJ_003.js

479 ms

js

js

64 ms

wXKoE3YSppcvo1PDlk_7Jec.woff

wXKoE3YSppcvo1PDlk_7Jec.woff

205 ms

fbevents.js

fbevents.js

131 ms

m0h0r0e3w3

m0h0r0e3w3

218 ms

sdk.js

sdk.js

76 ms

check-icon.png

check-icon.png

255 ms

korica5.png

korica5.png

366 ms

close.png

close.png

260 ms

sr.png

sr.png

151 ms

eng.png

eng.png

151 ms

wish-list-main.png

wish-list-main.png

152 ms

icon-pretraga.png

icon-pretraga.png

285 ms

icon-kolica.png

icon-kolica.png

284 ms

icon-menu.png

icon-menu.png

285 ms

icon-list.png

icon-list.png

371 ms

logo.png

logo.png

378 ms

search-icon.png

search-icon.png

390 ms

js

js

89 ms

image.php

image.php

492 ms

korpa.png

korpa.png

326 ms

ideide.gif

ideide.gif

326 ms

favorite.png

favorite.png

418 ms

new.png

new.png

427 ms

sale.png

sale.png

432 ms

english.png

english.png

570 ms

mail-icon-2.png

mail-icon-2.png

447 ms

partnerstvo-icon.png

partnerstvo-icon.png

569 ms

slide-1.png

slide-1.png

1603 ms

slide-2.png

slide-2.png

1038 ms

p238308b0.jpg

p238308b0.jpg

550 ms

p224063b0.jpg

p224063b0.jpg

570 ms

p194001b0.jpg

p194001b0.jpg

670 ms

p011530b0.jpg

p011530b0.jpg

691 ms

p238763b0.jpg

p238763b0.jpg

692 ms

banner-1.png

banner-1.png

934 ms

banner-2.png

banner-2.png

1026 ms

p090924c0.jpg

p090924c0.jpg

813 ms

p229541b0.jpg

p229541b0.jpg

813 ms

p213794b0.jpg

p213794b0.jpg

938 ms

p235620b0.jpg

p235620b0.jpg

937 ms

p233804b0.jpg

p233804b0.jpg

1057 ms

p239004b0.jpg

p239004b0.jpg

1058 ms

p238995b0.jpg

p238995b0.jpg

1059 ms

sdk.js

sdk.js

16 ms

p238994b0.jpg

p238994b0.jpg

1064 ms

p238993b0.jpg

p238993b0.jpg

1077 ms

p238992b0.jpg

p238992b0.jpg

1098 ms

clarity.js

clarity.js

77 ms

57 ms

paypal-card.png

paypal-card.png

998 ms

visa-card.png

visa-card.png

991 ms

ajax.php

ajax.php

1131 ms

mastercard-card.png

mastercard-card.png

1065 ms

maestro-crad.png

maestro-crad.png

1085 ms

komercialna-banka.png

komercialna-banka.png

1009 ms

ips_logo.png

ips_logo.png

1003 ms

ms-secure-card.png

ms-secure-card.png

1093 ms

visa-verified-card.png

visa-verified-card.png

1103 ms

dina-card.png

dina-card.png

1103 ms

discover-card.png

discover-card.png

1104 ms

ae-card.png

ae-card.png

1051 ms

diners-card.png

diners-card.png

1102 ms

footer-logo.png

footer-logo.png

1118 ms

arrow-drop.png

arrow-drop.png

1103 ms

drop-arrow-b.png

drop-arrow-b.png

1001 ms

korpa-icon-2.png

korpa-icon-2.png

1018 ms

marker.png

marker.png

1081 ms

ajax.php

ajax.php

369 ms

c.gif

c.gif

8 ms

Accessibility Review

korisnaknjiga.com accessibility score

52

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

korisnaknjiga.com 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

korisnaknjiga.com SEO score

92

Search Engine Optimization Advices

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

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

Language and Encoding

  • Language Detected

    SR

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Korisnaknjiga.com can be misinterpreted by Google and other search engines. Our service has detected that Serbian 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 Korisnaknjiga.com 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

korisnaknjiga.com

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