Access bolta.cz. Bolta - profily CZ s.r.o. | Podlahové lišty k vinylovým laminátovým podlahám

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.099

90/100

15%

TTI (Time to Interactive)

Value10.7 s

22/100

10%

bolta.cz

361 ms

www.bolta.cz

1625 ms

core.css

121 ms

grid.css

233 ms

css

26 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 86% of them (59 requests) were addressed to the original Bolta.cz, 6% (4 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Bolta.cz.

Content Size

1.1 MB

After Optimization

667.5 kB

In fact, the total size of Bolta.cz main page is 1.1 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 578.4 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 19.4 kB

Original 25.5 kB
After minification 22.6 kB
After compression 6.2 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 2.9 kB, which is 11% 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 19.4 kB or 76% of the original size.

Image Optimization

-4%

Potential reduce by 24.6 kB

Original 578.4 kB
After minification 553.7 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. Bolta images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 173.0 kB

Original 238.4 kB
After minification 184.0 kB
After compression 65.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 173.0 kB or 73% of the original size.

CSS Optimization

-84%

Potential reduce by 222.2 kB

Original 264.4 kB
After minification 201.8 kB
After compression 42.2 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. Bolta.cz needs all CSS files to be minified and compressed as it can save up to 222.2 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bolta. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

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

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.

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 Bolta.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 Bolta.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

bolta.cz

Open Graph description is not detected on the main page of Bolta. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Bolta - profily CZ s.r.o. | Podlahové lišty k vinylovým laminátovým podlahám

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

bolta.cz

www.bolta.cz

core.css

grid.css

css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

bolta.cz

www.bolta.cz

core.css

grid.css

css

css

layout.css

project.css

bootstrap.css

fonts.css

nivo-slider.css

jquery-ui-1.8.16.custom.css

prettyPhoto.css

jquery.qtip.min.css

demos.css

widgets.css

jquery.min.js

jquery-ui.min.js

jquery.prettyPhoto.js

jquery.nivo.slider.pack.js

jquery.cookie.js

jquery.imgCenter.minified.js

jquery.cycle.all.min.js

jquery.highlightFade.js

scripty.js

jquery.qtip.min.js

tipSwift.css

tipSwift.js

ui.dropdownchecklist.css

ui.dropdownchecklistNotGroup.js

scripts.js

jsConfig.js

ga.js

pattern.png

bottom-mask.png

search.png

logoStd.png

793-1507242721.jpg

794-1507141728.jpg

795-1507337354.jpg

797-1507168404.jpg

796-1507515067.jpg

879-1310286754.jpg