Access raft.cz. Vodácký průvodce www.raft.cz

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value7.6 s

25/100

10%

TBT (Total Blocking Time)

Value2,150 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.145

77/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

www.raft.cz

1384 ms

facebook.js

483 ms

nstyl.css

679 ms

gpt.js

95 ms

js

62 ms

Our browser made a total of 96 requests to load all elements on the main page. We found that 52% of them (50 requests) were addressed to the original Raft.cz, 6% (6 requests) were made to Tpc.googlesyndication.com and 4% (4 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (3.9 sec) belongs to the original domain Raft.cz.

Content Size

1.6 MB

After Optimization

972.4 kB

In fact, the total size of Raft.cz main page is 1.6 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. Javascripts take 811.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 89.7 kB

Original 114.1 kB
After minification 81.8 kB
After compression 24.4 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 32.3 kB, which is 28% 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 89.7 kB or 79% of the original size.

Image Optimization

-5%

Potential reduce by 32.0 kB

Original 599.4 kB
After minification 567.4 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. Raft images are well optimized though.

JavaScript Optimization

-54%

Potential reduce by 436.0 kB

Original 811.2 kB
After minification 803.7 kB
After compression 375.2 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 436.0 kB or 54% of the original size.

CSS Optimization

-80%

Potential reduce by 21.6 kB

Original 27.1 kB
After minification 18.6 kB
After compression 5.4 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. Raft.cz needs all CSS files to be minified and compressed as it can save up to 21.6 kB or 80% of the original size.

Requests Now

After Optimization

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Raft. 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 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

CS
Language Claimed

N/A
Encoding

UTF-8

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

raft.cz

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

Vodácký průvodce www.raft.cz

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

www.raft.cz

facebook.js

nstyl.css

gpt.js

js

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

www.raft.cz

facebook.js

nstyl.css

gpt.js

js

tag.js

WebResource.axd

sdk.js

pubads_impl.js

sdk.js

js

analytics.js

GdprCmpConsentDataProvider.js

BbnautIdDataProvider.js

registrace.gif

prihlaseni.gif

facebook-ico.gif

vlajka_cz.gif

vlajka_sk.gif

vlajka_en.gif

vlajka_de.gif

vlajka_pl.gif

hledat2.gif

logo_raft3.gif

thumb.aspx

thumb.aspx

thumb.aspx

thumb.aspx

thumb.aspx

cechy3_m.gif

slovensko_m.gif

rakousko_m.gif

2_limit_m.gif

1_limit_m.gif

thumb.aspx

thumb.aspx

thumb.aspx

thumb.aspx

thumb.aspx

logo_nj.png

logo_sj.png

logo_avts.png

thumb.aspx