Tools & Wizards About Us
opexbooks.pl screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

opexbooks.pl

Książki Lean Manufacturing, Six Sigma, zarządzanie jakością

Page Load Speed

5.9 sec in total

First Response

343 ms

Resources Loaded

5.3 sec

Page Rendered

251 ms

opexbooks.pl screenshot

About Website

Click here to check amazing Opexbooks content. Otherwise, check out these important facts you probably never knew about opexbooks.pl

Książki Lean Manufacturing, zarządzanie jakością oraz Six Sigma. Literatura W. E. Deminga, P. R. Scholtesa, D.J. Wheeler - księgarnia internetowa

Visit opexbooks.pl

Key Findings

We analyzed Opexbooks.pl page load time and found that the first response time was 343 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

opexbooks.pl performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

49/100

25%

SI (Speed Index)

Value10.5 s

7/100

10%

TBT (Total Blocking Time)

Value1,660 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.108

87/100

15%

TTI (Time to Interactive)

Value13.3 s

12/100

10%

Network Requests Diagram

opexbooks.pl

343 ms

opexbooks.pl

2573 ms

css

44 ms

style.min.css

125 ms

styles.css

244 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 79% of them (54 requests) were addressed to the original Opexbooks.pl, 6% (4 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Opexbooks.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 99.0 kB (7%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opexbooks.pl main page is 1.4 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. 55% of websites need less resources to load. Images take 686.5 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 86.7 kB

  • Original 106.2 kB
  • After minification 102.1 kB
  • After compression 19.6 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. 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 86.7 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 7 B

  • Original 686.5 kB
  • After minification 686.5 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. Opexbooks images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 5.1 kB

  • Original 524.9 kB
  • After minification 524.9 kB
  • After compression 519.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 7.2 kB

  • Original 112.0 kB
  • After minification 112.0 kB
  • After compression 104.7 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. Opexbooks.pl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 39 (66%)

Requests Now

59

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Opexbooks. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

opexbooks.pl

opexbooks.pl

343 ms

opexbooks.pl

opexbooks.pl

2573 ms

css

css

44 ms

style.min.css

style.min.css

125 ms

styles.css

styles.css

244 ms

settings.css

settings.css

338 ms

woocommerce-layout.css

woocommerce-layout.css

351 ms

woocommerce.css

woocommerce.css

341 ms

style.css

style.css

346 ms

style.css

style.css

351 ms

genericons.css

genericons.css

365 ms

font-awesome.min.css

font-awesome.min.css

449 ms

css

css

43 ms

front.css

front.css

451 ms

easypack.css

easypack.css

790 ms

js

js

77 ms

css

css

42 ms

index.js

index.js

459 ms

index.js

index.js

455 ms

jquery.min.js

jquery.min.js

580 ms

jquery-migrate.min.js

jquery-migrate.min.js

483 ms

jquery.themepunch.tools.min.js

jquery.themepunch.tools.min.js

671 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

560 ms

jquery.blockUI.min.js

jquery.blockUI.min.js

565 ms

add-to-cart.min.js

add-to-cart.min.js

573 ms

js.cookie.min.js

js.cookie.min.js

602 ms

woocommerce.min.js

woocommerce.min.js

670 ms

sourcebuster.min.js

sourcebuster.min.js

675 ms

order-attribution.min.js

order-attribution.min.js

688 ms

navigation.js

navigation.js

694 ms

skip-link-focus-fix.js

skip-link-focus-fix.js

721 ms

spacious-custom.js

spacious-custom.js

779 ms

api.js

api.js

52 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

779 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

784 ms

wp-polyfill.min.js

wp-polyfill.min.js

852 ms

index.js

index.js

852 ms

front.js

front.js

853 ms

cart-fragments.min.js

cart-fragments.min.js

900 ms

wc-blocks.css

wc-blocks.css

899 ms

sdk-for-javascript.js

sdk-for-javascript.js

1219 ms

opex-books.png

opex-books.png

153 ms

dummy.png

dummy.png

1033 ms

zrozumiecZmiennosc.jpg

zrozumiecZmiennosc.jpg

294 ms

PodrecznikLideraScholtes.jpg

PodrecznikLideraScholtes.jpg

426 ms

PodrecznikZespoluScholtes.jpg

PodrecznikZespoluScholtes.jpg

316 ms

lista-obraz.svg

lista-obraz.svg

114 ms

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuXMQreS2Ao.ttf

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuXMQreS2Ao.ttf

66 ms

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuvMQreS2Ao.ttf

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff1GhDuvMQreS2Ao.ttf

100 ms

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff0GmDuXMQreS2Ao.ttf

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff0GmDuXMQreS2Ao.ttf

98 ms

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff0GmDuvMQreS2Ao.ttf

z7NFdQDnbTkabZAIOl9il_O6KJj73e7Ff0GmDuvMQreS2Ao.ttf

203 ms

Genericons.svg

Genericons.svg

204 ms

8AAnjaY2BgYGQAgosrjpwF0ZcUq9bCaABTzgdAAAA=

8AAnjaY2BgYGQAgosrjpwF0ZcUq9bCaABTzgdAAAA=

17 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

404 ms

recaptcha__en.js

recaptcha__en.js

98 ms

revolution.extension.slideanims.min.js

revolution.extension.slideanims.min.js

195 ms

revolution.extension.actions.min.js

revolution.extension.actions.min.js

226 ms

revolution.extension.layeranimation.min.js

revolution.extension.layeranimation.min.js

276 ms

revolution.extension.navigation.min.js

revolution.extension.navigation.min.js

305 ms

revolution.extension.parallax.min.js

revolution.extension.parallax.min.js

335 ms

opexbooks.pl

opexbooks.pl

1300 ms

lazy.png

lazy.png

161 ms

koraliki-deminga-scaled.jpg

koraliki-deminga-scaled.jpg

465 ms

zrozumiecZmiennosc.jpg

zrozumiecZmiennosc.jpg

152 ms

revicons.woff

revicons.woff

112 ms

WyjscieZKryzysuDeming.jpg

WyjscieZKryzysuDeming.jpg

114 ms

PodrecznikZespoluScholtes.jpg

PodrecznikZespoluScholtes.jpg

219 ms

woocommerce-smallscreen.css

woocommerce-smallscreen.css

121 ms

Accessibility Review

opexbooks.pl accessibility score

93

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

Links do not have a discernible name

Best Practices

opexbooks.pl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

opexbooks.pl SEO score

100

Search Engine Optimization Advices

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

    PL

  • Language Claimed

    PL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opexbooks.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it matches the claimed language. Our system also found out that Opexbooks.pl 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

opexbooks.pl

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