Tools & Wizards About Us
concertclassic.com screenshot

Report Summary

  • 2

    Performance

    Renders faster than
    20% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

concertclassic.com

Concertclassic | Tous les concerts de musique classique

Page Load Speed

5.9 sec in total

First Response

230 ms

Resources Loaded

5.1 sec

Page Rendered

590 ms

concertclassic.com screenshot

About Website

Welcome to concertclassic.com homepage info - get ready to check Concertclassic best content for France right away, or after learning these important things about concertclassic.com

Concertclassic.com - la musique classique, vivante - est le site des concerts de musique classique : journal, agenda, vidéo et newsletter

Visit concertclassic.com

Key Findings

We analyzed Concertclassic.com page load time and found that the first response time was 230 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

concertclassic.com performance score

2

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value23.7 s

0/100

25%

SI (Speed Index)

Value13.5 s

2/100

10%

TBT (Total Blocking Time)

Value4,830 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value1.112

1/100

15%

TTI (Time to Interactive)

Value21.9 s

1/100

10%

Network Requests Diagram

concertclassic.com

230 ms

www.concertclassic.com

3272 ms

css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css

158 ms

css_0oig5-fRO4giG2O10-tmWXX1T2usZnmDz-8TZ0KBDxg.css

154 ms

jquery.timeentry.css

154 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 93% of them (55 requests) were addressed to the original Concertclassic.com, 3% (2 requests) were made to Code.jquery.com and 3% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Concertclassic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 823.1 kB (62%)

Content Size

1.3 MB

After Optimization

512.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Concertclassic.com main page is 1.3 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 453.7 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 89.1 kB

  • Original 105.7 kB
  • After minification 100.8 kB
  • After compression 16.6 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 89.1 kB or 84% of the original size.

Image Optimization

-9%

Potential reduce by 31.5 kB

  • Original 367.7 kB
  • After minification 336.2 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. Concertclassic images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 294.2 kB

  • Original 408.4 kB
  • After minification 333.0 kB
  • After compression 114.2 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 294.2 kB or 72% of the original size.

CSS Optimization

-90%

Potential reduce by 408.3 kB

  • Original 453.7 kB
  • After minification 447.9 kB
  • After compression 45.4 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. Concertclassic.com needs all CSS files to be minified and compressed as it can save up to 408.3 kB or 90% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (28%)

Requests Now

54

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Concertclassic. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

concertclassic.com

concertclassic.com

230 ms

www.concertclassic.com

www.concertclassic.com

3272 ms

css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css

css_kShW4RPmRstZ3SpIC-ZvVGNFVAi0WEMuCnI0ZkYIaFw.css

158 ms

css_0oig5-fRO4giG2O10-tmWXX1T2usZnmDz-8TZ0KBDxg.css

css_0oig5-fRO4giG2O10-tmWXX1T2usZnmDz-8TZ0KBDxg.css

154 ms

jquery.timeentry.css

jquery.timeentry.css

154 ms

css_5QfL-MUNXmbZLyUGolwi29OQ6a1Vyyjd1YdkXFUCnyI.css

css_5QfL-MUNXmbZLyUGolwi29OQ6a1Vyyjd1YdkXFUCnyI.css

166 ms

css_oX9VHq5QKosUoCGuaNZE0Dsqt0-b60pd2CSjoqz0QWM.css

css_oX9VHq5QKosUoCGuaNZE0Dsqt0-b60pd2CSjoqz0QWM.css

162 ms

jquery-ui.css

jquery-ui.css

9 ms

css_0iRCe_fKY3Fkds9yeQVfl1dIumEtM5s73PpEPhBhiFc.css

css_0iRCe_fKY3Fkds9yeQVfl1dIumEtM5s73PpEPhBhiFc.css

257 ms

js_gam0c92gTspMYtadSvCYU4LmcrJOl6mruic2otZm0Ic.js

js_gam0c92gTspMYtadSvCYU4LmcrJOl6mruic2otZm0Ic.js

377 ms

js_EI5lp27hsIv8jDyWPEnCNnzm0qsVxckBiE06foAKPCc.js

js_EI5lp27hsIv8jDyWPEnCNnzm0qsVxckBiE06foAKPCc.js

395 ms

js_Eitd76bxjZ9igdxkrCgQ8ScGfvlVvLbEAsMMmGoVhWc.js

js_Eitd76bxjZ9igdxkrCgQ8ScGfvlVvLbEAsMMmGoVhWc.js

242 ms

js_o3KJJfLNlKKCzfA1IKyhltuYPKmTFgpS3pSQNojU4kQ.js

js_o3KJJfLNlKKCzfA1IKyhltuYPKmTFgpS3pSQNojU4kQ.js

320 ms

js_Va9IciH2meu_XbmgTCnnAT7FYCNVWy1vNTneu5_mpWQ.js

js_Va9IciH2meu_XbmgTCnnAT7FYCNVWy1vNTneu5_mpWQ.js

301 ms

jquery-ui.js

jquery-ui.js

9 ms

js_PQvdQ9IuQmtFg1BfcuM5AfRbSOtjJ94SaFzmjtcuuQ4.js

js_PQvdQ9IuQmtFg1BfcuM5AfRbSOtjJ94SaFzmjtcuuQ4.js

322 ms

js_ClYGB_EFGVhKSQo5nVqm2WXbcodJFiI8NPyU79S6VgY.js

js_ClYGB_EFGVhKSQo5nVqm2WXbcodJFiI8NPyU79S6VgY.js

341 ms

dc.js

dc.js

265 ms

bg.png

bg.png

87 ms

logo.png

logo.png

80 ms

icon-search-18x20.png

icon-search-18x20.png

90 ms

icon-compte-22.png

icon-compte-22.png

87 ms

icon-v-22.png

icon-v-22.png

89 ms

icon-tw-22.png

icon-tw-22.png

79 ms

icon-newsletter-22.png

icon-newsletter-22.png

158 ms

mega-ban-sorbonne-integralite.gif

mega-ban-sorbonne-integralite.gif

454 ms

2016_03_ondif_mega_adamcopland.jpg

2016_03_ondif_mega_adamcopland.jpg

362 ms

icon-calendar-19x21.png

icon-calendar-19x21.png

163 ms

renaud-capucon-c-darmigny_1.jpg

renaud-capucon-c-darmigny_1.jpg

166 ms

anne_queffelec.png

anne_queffelec.png

258 ms

logo-printemps-violon-agenda.gif

logo-printemps-violon-agenda.gif

360 ms

300x232_arton65247.jpg

300x232_arton65247.jpg

361 ms

elisabeth_joye-site_agence_rameau_0.jpg

elisabeth_joye-site_agence_rameau_0.jpg

361 ms

play.png

play.png

362 ms

n7rpyt86VoM.jpg

n7rpyt86VoM.jpg

456 ms

138299231.jpg

138299231.jpg

486 ms

revelations-classique-adami-2015-home.gif

revelations-classique-adami-2015-home.gif

409 ms

home-page-2-concerts-paris.gif

home-page-2-concerts-paris.gif

488 ms

opera-tours-2015-agenda.gif

opera-tours-2015-agenda.gif

434 ms

loge-olympique_20mars2016.jpg

loge-olympique_20mars2016.jpg

487 ms

orchestre-philharmonique-strasbourg-2015-agenda.gif

orchestre-philharmonique-strasbourg-2015-agenda.gif

602 ms

gens_calexandreweinberger_virginclassics5.jpg

gens_calexandreweinberger_virginclassics5.jpg

530 ms

vie-chateau-agenda.gif

vie-chateau-agenda.gif

534 ms

sabine_devieilhe_c_alice_de_sagazan.jpg

sabine_devieilhe_c_alice_de_sagazan.jpg

567 ms

opera-marseille-2015-agenda.gif

opera-marseille-2015-agenda.gif

572 ms

Emmanuelle_Haim.png

Emmanuelle_Haim.png

647 ms

defaut-journal-2013.gif

defaut-journal-2013.gif

609 ms

teatre-capitole-agenda.gif

teatre-capitole-agenda.gif

685 ms

2016_03_verbier.jpg

2016_03_verbier.jpg

652 ms

nl_concertclassic_14_0.jpg

nl_concertclassic_14_0.jpg

809 ms

2016_03_mnlcompositeurs.jpg

2016_03_mnlcompositeurs.jpg

688 ms

2016_03_buchetchastel_0.gif

2016_03_buchetchastel_0.gif

756 ms

li.png

li.png

728 ms

icon-fb-22.png

icon-fb-22.png

735 ms

__utm.gif

__utm.gif

11 ms

roboto-regular-webfont.woff

roboto-regular-webfont.woff

681 ms

roboto-bold-condensed-webfont.woff

roboto-bold-condensed-webfont.woff

781 ms

roboto-condensed-italic-webfont.woff

roboto-condensed-italic-webfont.woff

809 ms

css_kiJQgcJez_jIwow0S6Ht29xPa5-uXtEQWQSV68xPAJg.css

css_kiJQgcJez_jIwow0S6Ht29xPa5-uXtEQWQSV68xPAJg.css

84 ms

Accessibility Review

concertclassic.com accessibility score

79

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

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

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

High

Links do not have a discernible name

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

concertclassic.com best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

concertclassic.com SEO score

97

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

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

concertclassic.com

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