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colab.be screenshot

Report Summary

  • 81

    Performance

    Renders faster than
    86% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

colab.be

Auditoriums Colab - HI-FI - Home Cinema

Page Load Speed

3.1 sec in total

First Response

486 ms

Resources Loaded

2 sec

Page Rendered

618 ms

colab.be screenshot

About Website

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Key Findings

We analyzed Colab.be page load time and found that the first response time was 486 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

colab.be performance score

81

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value2.1 s

99/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

colab.be

486 ms

default.css

194 ms

menu_vertical.css

169 ms

functions.js

188 ms

AC_RunActiveContent.js

181 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 97% of them (74 requests) were addressed to the original Colab.be, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (843 ms) belongs to the original domain Colab.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 80.3 kB (28%)

Content Size

288.1 kB

After Optimization

207.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Colab.be main page is 288.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 214.0 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 30.3 kB

  • Original 39.0 kB
  • After minification 37.0 kB
  • After compression 8.7 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 30.3 kB or 78% of the original size.

Image Optimization

-17%

Potential reduce by 35.8 kB

  • Original 214.0 kB
  • After minification 178.3 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. Obviously, Colab needs image optimization as it can save up to 35.8 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-29%

Potential reduce by 7.7 kB

  • Original 26.7 kB
  • After minification 23.2 kB
  • After compression 19.0 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 7.7 kB or 29% of the original size.

CSS Optimization

-78%

Potential reduce by 6.5 kB

  • Original 8.3 kB
  • After minification 6.8 kB
  • After compression 1.8 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. Colab.be needs all CSS files to be minified and compressed as it can save up to 6.5 kB or 78% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

73

After Optimization

73

  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Colab. According to our analytics all requests are already optimized.

Network Requests Diagram

colab.be

colab.be

486 ms

default.css

default.css

194 ms

menu_vertical.css

menu_vertical.css

169 ms

functions.js

functions.js

188 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

181 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

163 ms

ga.js

ga.js

9 ms

bg_website.jpg

bg_website.jpg

186 ms

colab_logo.jpg

colab_logo.jpg

113 ms

bg_menu.jpg

bg_menu.jpg

111 ms

illustration34.jpg

illustration34.jpg

267 ms

breadcrumb.jpg

breadcrumb.jpg

111 ms

ico_news_small.jpg

ico_news_small.jpg

104 ms

vitus-0_mini.jpg

vitus-0_mini.jpg

232 ms

N48A2075_mini.jpg

N48A2075_mini.jpg

240 ms

kronos5.jpg

kronos5.jpg

238 ms

Klipsch-Home-Theater-Systems.jpg

Klipsch-Home-Theater-Systems.jpg

230 ms

Holiday_Christmas_Delivery_Hero.jpg

Holiday_Christmas_Delivery_Hero.jpg

297 ms

sopra2.jpg

sopra2.jpg

321 ms

SDA2400anglesmall.jpg

SDA2400anglesmall.jpg

346 ms

Klipsch%20Reference%20EISA2C.jpg

Klipsch%20Reference%20EISA2C.jpg

345 ms

12036862_1669122656707587_5545347434554303639_n.jpg

12036862_1669122656707587_5545347434554303639_n.jpg

347 ms

facecolab-mini.gif

facecolab-mini.gif

375 ms

ico_coeur_small.jpg

ico_coeur_small.jpg

396 ms

evpproduct.jpg

evpproduct.jpg

431 ms

e560mini.jpg

e560mini.jpg

460 ms

PAS80.jpg

PAS80.jpg

452 ms

smartstylus80.jpg

smartstylus80.jpg

471 ms

h1201SilverFront_mini80.jpg

h1201SilverFront_mini80.jpg

481 ms

thumbAK10001B.jpg

thumbAK10001B.jpg

488 ms

thumbAK24001B.jpg

thumbAK24001B.jpg

548 ms

thumbakjr01B.jpg

thumbakjr01B.jpg

551 ms

el150mini.jpg

el150mini.jpg

552 ms

scm40-mini.jpg

scm40-mini.jpg

574 ms

sia2-150_mini.jpg

sia2-150_mini.jpg

592 ms

DDP02.jpg

DDP02.jpg

598 ms

DPA1front.jpg

DPA1front.jpg

652 ms

PS5.jpg

PS5.jpg

673 ms

Solfege_mini.jpg

Solfege_mini.jpg

656 ms

N48A4937mini.jpg

N48A4937mini.jpg

692 ms

F85-back-quarter-view%20png.jpg

F85-back-quarter-view%20png.jpg

699 ms

N48A5946_mini.jpg

N48A5946_mini.jpg

721 ms

aria-926_mini.jpg

aria-926_mini.jpg

750 ms

__utm.gif

__utm.gif

12 ms

sopra2.jpg

sopra2.jpg

652 ms

spiritclassic.jpg

spiritclassic.jpg

673 ms

Haigner_rho_mini.jpg

Haigner_rho_mini.jpg

687 ms

4429Mini.jpg

4429Mini.jpg

709 ms

1000ARRAYmini.gif

1000ARRAYmini.gif

649 ms

RP250B.jpg

RP250B.jpg

623 ms

RP260B.jpg

RP260B.jpg

623 ms

Refpremiereeisapack1.jpg

Refpremiereeisapack1.jpg

659 ms

RP280B.jpg

RP280B.jpg

666 ms

kronos5.jpg

kronos5.jpg

666 ms

stabiref-mini.jpg

stabiref-mini.jpg

629 ms

stabi-mini.jpg

stabi-mini.jpg

638 ms

d1_80.jpg

d1_80.jpg

650 ms

SDA2400anglesmall.jpg

SDA2400anglesmall.jpg

652 ms

N48A5664_mini.jpg

N48A5664_mini.jpg

653 ms

07alu_mini.jpg

07alu_mini.jpg

650 ms

MG17mini.jpg

MG17mini.jpg

632 ms

model_20.7_roses.jpg

model_20.7_roses.jpg

625 ms

magnepan.jpg

magnepan.jpg

632 ms

django_l_mini.jpg

django_l_mini.jpg

640 ms

xl_mini.jpg

xl_mini.jpg

650 ms

c8Mini.jpg

c8Mini.jpg

644 ms

calypso_front_mini.jpg

calypso_front_mini.jpg

633 ms

cd8_mini.jpg

cd8_mini.jpg

619 ms

cdmattemitcd.jpg

cdmattemitcd.jpg

843 ms

nokki01mini.jpg

nokki01mini.jpg

647 ms

russelk_80.jpg

russelk_80.jpg

641 ms

1series.jpg

1series.jpg

623 ms

N48A0069_mini.jpg

N48A0069_mini.jpg

628 ms

N48A0136_mini.jpg

N48A0136_mini.jpg

621 ms

N18A6068_mini.jpg

N18A6068_mini.jpg

648 ms

ri100.jpg

ri100.jpg

632 ms

Accessibility Review

colab.be accessibility score

58

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

colab.be best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

colab.be SEO score

62

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

High

Document uses plugins

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Colab.be 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 Colab.be main page’s claimed encoding is iso-8859-1. 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

colab.be

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