Tools & Wizards About Us
lac.cz screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

lac.cz

LAC Czechia | Industrial Furnaces, Dryers and Refractory Castable Shapes

Page Load Speed

3.6 sec in total

First Response

309 ms

Resources Loaded

2.9 sec

Page Rendered

438 ms

lac.cz screenshot

About Website

Welcome to lac.cz homepage info - get ready to check LAC best content right away, or after learning these important things about lac.cz

Do you need an industrial furnace, dryer, refractory castable shapes or the entire equipment to order? Contact us. At LAC, we also meet demanding requirements.

Visit lac.cz

Key Findings

We analyzed Lac.cz page load time and found that the first response time was 309 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

lac.cz performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value860 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.066

97/100

15%

TTI (Time to Interactive)

Value11.5 s

18/100

10%

Network Requests Diagram

lac.cz

309 ms

244 ms

jquery.min.js

28 ms

jquery-ui.min.js

43 ms

bootstrap.min.js

43 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 75% of them (56 requests) were addressed to the original Lac.cz, 13% (10 requests) were made to Use.typekit.net and 3% (2 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Lac.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 255.6 kB (17%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lac.cz main page is 1.5 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. 55% of websites need less resources to load. Images take 818.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 32.3 kB

  • Original 42.9 kB
  • After minification 39.1 kB
  • After compression 10.5 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 32.3 kB or 75% of the original size.

Image Optimization

-1%

Potential reduce by 9.3 kB

  • Original 818.9 kB
  • After minification 809.6 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. LAC images are well optimized though.

JavaScript Optimization

-32%

Potential reduce by 181.6 kB

  • Original 566.8 kB
  • After minification 566.8 kB
  • After compression 385.2 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 181.6 kB or 32% of the original size.

CSS Optimization

-39%

Potential reduce by 32.4 kB

  • Original 82.3 kB
  • After minification 81.8 kB
  • After compression 49.9 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. Lac.cz needs all CSS files to be minified and compressed as it can save up to 32.4 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (68%)

Requests Now

62

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LAC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lac.cz

lac.cz

309 ms

244 ms

jquery.min.js

jquery.min.js

28 ms

jquery-ui.min.js

jquery-ui.min.js

43 ms

bootstrap.min.js

bootstrap.min.js

43 ms

cwh4isf.js

cwh4isf.js

93 ms

normalize.css

normalize.css

104 ms

bootstrap.css

bootstrap.css

239 ms

bootstrap.typography.css

bootstrap.typography.css

342 ms

cwh4isf.css

cwh4isf.css

176 ms

meanmenu.css

meanmenu.css

402 ms

jquery.selectBoxIt.css

jquery.selectBoxIt.css

403 ms

nouislider.css

nouislider.css

401 ms

jquery.fancybox.css

jquery.fancybox.css

418 ms

slick.css

slick.css

419 ms

slick-theme.css

slick-theme.css

443 ms

helpers.css

helpers.css

500 ms

ol.css

ol.css

501 ms

lac-main.css

lac-main.css

638 ms

lac-add.css

lac-add.css

524 ms

WebResource.axd

WebResource.axd

521 ms

ScriptResource.axd

ScriptResource.axd

542 ms

ScriptResource.axd

ScriptResource.axd

599 ms

jquery-meanmenu.js

jquery-meanmenu.js

603 ms

jquery.hoverdir.js

jquery.hoverdir.js

629 ms

jquery-selectboxit-min.js

jquery-selectboxit-min.js

630 ms

grids.js

grids.js

646 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

707 ms

wNumb.js

wNumb.js

710 ms

nouislider.js

nouislider.js

745 ms

slick.min.js

slick.min.js

748 ms

jquery.nicescroll.js

jquery.nicescroll.js

760 ms

ol.js

ol.js

1184 ms

pux-open-map.js

pux-open-map.js

810 ms

jquery.imagemapster.min.js

jquery.imagemapster.min.js

822 ms

pux-helpers-cookie.js

pux-helpers-cookie.js

850 ms

pux-helpers-url.js

pux-helpers-url.js

854 ms

pux-helpers-change-url.js

pux-helpers-change-url.js

862 ms

pux-ajax.js

pux-ajax.js

910 ms

pux-components-infiniterepeater.js

pux-components-infiniterepeater.js

925 ms

lac-map.js

lac-map.js

956 ms

lac-main.js

lac-main.js

982 ms

gtm.js

gtm.js

62 ms

p.css

p.css

27 ms

style.css

style.css

328 ms

css

css

35 ms

LAC_NEW-logo-slogan_header.svg

LAC_NEW-logo-slogan_header.svg

110 ms

oceneni-(1).png.aspx

oceneni-(1).png.aspx

200 ms

arrow-ddl.png

arrow-ddl.png

354 ms

flags.png

flags.png

354 ms

icon-search-22x22.png

icon-search-22x22.png

118 ms

intro-l.jpg

intro-l.jpg

364 ms

icon-adv-l1.png

icon-adv-l1.png

359 ms

icon-adv-l2.png

icon-adv-l2.png

360 ms

icon-adv-l3.png

icon-adv-l3.png

360 ms

intro-r.jpg

intro-r.jpg

362 ms

icon-adv-r1.png

icon-adv-r1.png

360 ms

icon-adv-r2.png

icon-adv-r2.png

361 ms

icon-adv-r3.png

icon-adv-r3.png

362 ms

Navstivte-stanek-LAC-na-veletrhu-FAKUMA.aspx

Navstivte-stanek-LAC-na-veletrhu-FAKUMA.aspx

363 ms

Karuselova-pec-KRS-3400.aspx

Karuselova-pec-KRS-3400.aspx

734 ms

Navstivte-nas-na-Mezinarodnim-strojirenskem-ve-(2).aspx

Navstivte-nas-na-Mezinarodnim-strojirenskem-ve-(2).aspx

507 ms

hp-career.jpg

hp-career.jpg

505 ms

S6uyw4BMUTPHjx4wWA.woff

S6uyw4BMUTPHjx4wWA.woff

23 ms

d

d

349 ms

d

d

80 ms

S6u9w4BMUTPHh6UVSwiPHw.woff

S6u9w4BMUTPHh6UVSwiPHw.woff

29 ms

d

d

73 ms

d

d

107 ms

d

d

92 ms

icomoon.ttf

icomoon.ttf

401 ms

d

d

116 ms

d

d

78 ms

d

d

94 ms

p.gif

p.gif

4 ms

Accessibility Review

lac.cz accessibility score

87

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.

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

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

lac.cz best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

lac.cz SEO score

96

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

lac.cz

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