Tools & Wizards About Us
optikdodomu.cz screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

optikdodomu.cz

Navštívíme vás s kolekcí dioptrických brýlí zdarma a nezávazně po celé ČR. Vybrat si můžete také brýle online v našem e-shopu. Nebo navštivte některou...

Page Load Speed

19.6 sec in total

First Response

410 ms

Resources Loaded

19 sec

Page Rendered

271 ms

optikdodomu.cz screenshot

About Website

Click here to check amazing Optik Do Domu content for Czech Republic. Otherwise, check out these important facts you probably never knew about optikdodomu.cz

Navštívíme vás s kolekcí dioptrických brýlí zdarma a nezávazně po celé ČR. Vybrat si můžete také brýle online v našem e-shopu. Nebo navštivte…

Visit optikdodomu.cz

Key Findings

We analyzed Optikdodomu.cz page load time and found that the first response time was 410 ms and then it took 19.2 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

optikdodomu.cz performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value9.5 s

12/100

10%

TBT (Total Blocking Time)

Value16,400 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value23.1 s

1/100

10%

Network Requests Diagram

optikdodomu.cz

410 ms

optikdodomu.cz

16347 ms

bootstrap.min.css

65 ms

jasny-bootstrap.min.css

87 ms

font-awesome.min.css

77 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 41% of them (16 requests) were addressed to the original Optikdodomu.cz, 10% (4 requests) were made to Maxcdn.bootstrapcdn.com and 8% (3 requests) were made to V2.zopim.com. The less responsive or slowest element that took the longest time to load (16.3 sec) belongs to the original domain Optikdodomu.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 722.5 kB (52%)

Content Size

1.4 MB

After Optimization

663.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Optikdodomu.cz 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. 60% of websites need less resources to load. CSS take 535.6 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 29.4 kB

  • Original 39.3 kB
  • After minification 39.3 kB
  • After compression 9.8 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 29.4 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 27 B

  • Original 400.9 kB
  • After minification 400.9 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. Optik Do Domu images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 259.9 kB

  • Original 410.1 kB
  • After minification 410.1 kB
  • After compression 150.2 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 259.9 kB or 63% of the original size.

CSS Optimization

-81%

Potential reduce by 433.1 kB

  • Original 535.6 kB
  • After minification 534.8 kB
  • After compression 102.5 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. Optikdodomu.cz needs all CSS files to be minified and compressed as it can save up to 433.1 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (68%)

Requests Now

28

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optik Do Domu. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

optikdodomu.cz

optikdodomu.cz

410 ms

optikdodomu.cz

optikdodomu.cz

16347 ms

bootstrap.min.css

bootstrap.min.css

65 ms

jasny-bootstrap.min.css

jasny-bootstrap.min.css

87 ms

font-awesome.min.css

font-awesome.min.css

77 ms

styles.production.min-fad1256a28.css

styles.production.min-fad1256a28.css

449 ms

jquery-1.11.0.min.js

jquery-1.11.0.min.js

82 ms

jquery-migrate-1.2.1.min.js

jquery-migrate-1.2.1.min.js

80 ms

bootstrap.min.js

bootstrap.min.js

75 ms

jasny-bootstrap.min.js

jasny-bootstrap.min.js

93 ms

scripts.production.min-9491cab09c.js

scripts.production.min-9491cab09c.js

795 ms

search_cross.png

search_cross.png

216 ms

order_img.png

order_img.png

622 ms

gtm.js

gtm.js

215 ms

sprite-layout-lg-0118151197.png

sprite-layout-lg-0118151197.png

415 ms

sprite-homepage-lg-d8b5573748.png

sprite-homepage-lg-d8b5573748.png

1091 ms

sprite-slider-lg-d0c5b2b8e4.png

sprite-slider-lg-d0c5b2b8e4.png

1054 ms

girl2.png

girl2.png

1091 ms

button_line.png

button_line.png

526 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

76 ms

roboto-light.woff

roboto-light.woff

590 ms

roboto-regular.woff

roboto-regular.woff

1006 ms

roboto-medium.woff

roboto-medium.woff

1006 ms

roboto-bold.woff

roboto-bold.woff

1007 ms

segoe.ttf

segoe.ttf

1189 ms

widget_v2.132.js

widget_v2.132.js

37 ms

analytics.js

analytics.js

227 ms

conversion_async.js

conversion_async.js

199 ms

retargeting.js

retargeting.js

951 ms

__$$__stringtable_lang_cs.js

__$$__stringtable_lang_cs.js

64 ms

34 ms

linkid.js

linkid.js

18 ms

40 ms

collect

collect

12 ms

collect

collect

69 ms

ga-audiences

ga-audiences

20 ms

avatar_simple_visitor.png

avatar_simple_visitor.png

127 ms

aL63HcygAAVYuCCsAAA==

aL63HcygAAVYuCCsAAA==

31 ms

retargeting

retargeting

133 ms

Accessibility Review

optikdodomu.cz accessibility score

90

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

optikdodomu.cz 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

High

Page has valid source maps

SEO Factors

optikdodomu.cz 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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

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

optikdodomu.cz

Open Graph description is not detected on the main page of Optik Do Domu. 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: