Access sunlab.cz. SUNLAB.CZ - Electronic music project

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value5,880 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.106

88/100

15%

TTI (Time to Interactive)

Value24.8 s

0/100

10%

sunlab.cz

396 ms

main.css

323 ms

jquery-1.4.2.min.js

6 ms

coin-slider.min.js

341 ms

coin-slider-styles.css

319 ms

Our browser made a total of 148 requests to load all elements on the main page. We found that 46% of them (68 requests) were addressed to the original Sunlab.cz, 9% (13 requests) were made to Ssl.google-analytics.com and 6% (9 requests) were made to W.soundcloud.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Sunlab.cz.

Content Size

2.5 MB

After Optimization

1.4 MB

In fact, the total size of Sunlab.cz main page is 2.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 873.7 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 65.3 kB

Original 79.4 kB
After minification 76.4 kB
After compression 14.1 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 65.3 kB or 82% of the original size.

Image Optimization

-10%

Potential reduce by 84.5 kB

Original 856.9 kB
After minification 772.4 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. SUNLAB images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 542.7 kB

Original 873.7 kB
After minification 854.4 kB
After compression 331.1 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 542.7 kB or 62% of the original size.

CSS Optimization

-62%

Potential reduce by 423.5 kB

Original 688.6 kB
After minification 680.0 kB
After compression 265.0 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. Sunlab.cz needs all CSS files to be minified and compressed as it can save up to 423.5 kB or 62% of the original size.

Requests Now

141

After Optimization

The browser has sent 141 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SUNLAB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 8 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 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

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

These items highlight common accessibility best practices.

High

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

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

High

Browser errors were logged to the console

High

Page has valid source maps

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

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 doesn't use legible font sizes

Language and Encoding

Language Detected

CS
Language Claimed

N/A
Encoding

WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sunlab.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 Sunlab.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

sunlab.cz

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

SUNLAB.CZ - Electronic music project

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

sunlab.cz

main.css

jquery-1.4.2.min.js

coin-slider.min.js

coin-slider-styles.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

sunlab.cz

main.css

jquery-1.4.2.min.js

coin-slider.min.js

coin-slider-styles.css

highslide-with-gallery.js

highslide.css

main.js

script.js

ga.js

back.jpg

header_cdj2000.jpg

header_djm600.jpg

header_old.jpg

header_reardjm600.jpg

header_wxxicegrgs.jpg

header.jpg

go.jpg

news.jpg

partylist.jpg

gbook.jpg

downloads.jpg

foto.jpg

djs.jpg

flyers.jpg

links.jpg

support.jpg

contact.jpg

registration.jpg

transfer.jpg

google-plus-logo.jpg

ajtak_org_88x31.jpg

ctusiinfo.gif

wonderbeat.gif

technokracie.gif

easyboy-cz.gif

sunlab_ag.gif

anketa-bar.gif

news.jpg

1457964289_2.jpg

skip-up.jpg

next-page.jpg

close.jpg