Tools & Wizards About Us
osr.ch screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

osr.ch

Orchestre de la Suisse Romande | OSR - Orchestre de la Suisse Romande

Page Load Speed

4.5 sec in total

First Response

304 ms

Resources Loaded

3.4 sec

Page Rendered

848 ms

osr.ch screenshot

About Website

Welcome to osr.ch homepage info - get ready to check OSR best content for Switzerland right away, or after learning these important things about osr.ch

The Orchestre de la Suisse Romande is the premier symphony orchestra of French-speaking Swizterland, and principal orchestra of the Grand Théâtre de Genève. Composed of 112 musicians, the OSR today co...

Visit osr.ch

Key Findings

We analyzed Osr.ch page load time and found that the first response time was 304 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

osr.ch performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value1,850 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value17.1 s

4/100

10%

Network Requests Diagram

osr.ch

304 ms

osr.ch

411 ms

www.osr.ch

648 ms

204 ms

103 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 86% of them (54 requests) were addressed to the original Osr.ch, 3% (2 requests) were made to Maps.googleapis.com and 3% (2 requests) were made to Img.youtube.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Osr.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 39.6 kB (1%)

Content Size

6.7 MB

After Optimization

6.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Osr.ch main page is 6.7 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. 45% of websites need less resources to load. Images take 5.9 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 35.6 kB

  • Original 45.7 kB
  • After minification 45.1 kB
  • After compression 10.2 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. 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 35.6 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 2.6 kB

  • Original 5.9 MB
  • After minification 5.9 MB

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. OSR images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.3 kB

  • Original 587.7 kB
  • After minification 587.7 kB
  • After compression 586.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 183 B

  • Original 97.9 kB
  • After minification 97.9 kB
  • After compression 97.7 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. Osr.ch has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (18%)

Requests Now

57

After Optimization

47

  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OSR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

osr.ch

osr.ch

304 ms

osr.ch

osr.ch

411 ms

www.osr.ch

www.osr.ch

648 ms

204 ms

103 ms

merged-7a4813bdfac614103f53d806e4f6d7a0-min.css

merged-7a4813bdfac614103f53d806e4f6d7a0-min.css

296 ms

merged-6dfb2f1067600a78594b7fd1711c468e.js

merged-6dfb2f1067600a78594b7fd1711c468e.js

336 ms

Newsletter.js

Newsletter.js

454 ms

vendor.min.js

vendor.min.js

687 ms

merged-18aeb73e690d0c95d58f08aac297289f.js

merged-18aeb73e690d0c95d58f08aac297289f.js

335 ms

js

js

48 ms

pixie.js

pixie.js

75 ms

webfontloader.js

webfontloader.js

99 ms

sddefault.jpg

sddefault.jpg

280 ms

sddefault.jpg

sddefault.jpg

291 ms

csm_Sokhiev-Tugan-c-Marc_Brenner_0ff2596ac9.jpg

csm_Sokhiev-Tugan-c-Marc_Brenner_0ff2596ac9.jpg

598 ms

csm_osr_saison_1080x1080px_WEB_2d7395c43f.png

csm_osr_saison_1080x1080px_WEB_2d7395c43f.png

700 ms

csm_1080x1080_dcabd887f8.png

csm_1080x1080_dcabd887f8.png

606 ms

csm_GTG_24-25_Photo_Saison_cover_entier_OSR_BD_85c4abdd03.jpg

csm_GTG_24-25_Photo_Saison_cover_entier_OSR_BD_85c4abdd03.jpg

796 ms

csm_1080x1080_pass_liberte_8cea7c5371.jpg

csm_1080x1080_pass_liberte_8cea7c5371.jpg

705 ms

csm_Visuel_24-25_OSR_OP1_Tristan_Corr_RVB_01_8cbd0f01f5.jpg

csm_Visuel_24-25_OSR_OP1_Tristan_Corr_RVB_01_8cbd0f01f5.jpg

469 ms

GTG_Grand_Theatre_Geneve_Black.svg

GTG_Grand_Theatre_Geneve_Black.svg

567 ms

csm_jonathan-nott-HD-screen-5a_credit_Guillaume_Megevand_18d28d708d.jpg

csm_jonathan-nott-HD-screen-5a_credit_Guillaume_Megevand_18d28d708d.jpg

671 ms

csm_Bertrand_Chamayou_c_Marco_Borggreve_788c925baa.jpg

csm_Bertrand_Chamayou_c_Marco_Borggreve_788c925baa.jpg

704 ms

csm_Sokhiev-Tugan-c-Marc_Brenner_448b355ee7.jpg

csm_Sokhiev-Tugan-c-Marc_Brenner_448b355ee7.jpg

709 ms

csm_ZOFIA_KINIORSKA-010_Credit_Bartek_Barczyk_d095c4f9e2.jpg

csm_ZOFIA_KINIORSKA-010_Credit_Bartek_Barczyk_d095c4f9e2.jpg

776 ms

csm_1080x1080_41e8c2db34.png

csm_1080x1080_41e8c2db34.png

804 ms

csm_Valentine_Michaud_c_Fred_Merz-Lundi13_3_60d8915d96.jpg

csm_Valentine_Michaud_c_Fred_Merz-Lundi13_3_60d8915d96.jpg

1011 ms

Footer-OSR-Amis-white.svg

Footer-OSR-Amis-white.svg

803 ms

logo_footer_OSR_Amis_Vaud.svg

logo_footer_OSR_Amis_Vaud.svg

807 ms

Footer-LORO-white.svg

Footer-LORO-white.svg

875 ms

Aline_Foriel-Destezet_Logo_blanc_EN.svg

Aline_Foriel-Destezet_Logo_blanc_EN.svg

893 ms

Footer-MINKOFF-white.svg

Footer-MINKOFF-white.svg

901 ms

logo_footer_Fondation_Caris.svg

logo_footer_Fondation_Caris.svg

902 ms

logo_footer_Sandoz.svg

logo_footer_Sandoz.svg

904 ms

Footer-FondationLeenaards-white.svg

Footer-FondationLeenaards-white.svg

972 ms

osr-partner-fondation-bru-footer.svg

osr-partner-fondation-bru-footer.svg

994 ms

Footer-SIG-white.svg

Footer-SIG-white.svg

1005 ms

rts.svg

rts.svg

1008 ms

Footer-JTI-white.svg

Footer-JTI-white.svg

1003 ms

Footer-GE-white.svg

Footer-GE-white.svg

1070 ms

Footer-VGE-white.svg

Footer-VGE-white.svg

1093 ms

Footer-VD-white.svg

Footer-VD-white.svg

1103 ms

facebook-yellow.svg

facebook-yellow.svg

1105 ms

instagram-yellow.svg

instagram-yellow.svg

1105 ms

youtube-yellow.svg

youtube-yellow.svg

1106 ms

spotify-yellow.svg

spotify-yellow.svg

1162 ms

applemusic-yellow.svg

applemusic-yellow.svg

1183 ms

logo-OSR-black-2024.svg

logo-OSR-black-2024.svg

1136 ms

bootstrappackageicon.min.css

bootstrappackageicon.min.css

1105 ms

MonotypeGrotesqueStdRoman.woff

MonotypeGrotesqueStdRoman.woff

853 ms

submenu-arrow-black.svg

submenu-arrow-black.svg

771 ms

basket.svg

basket.svg

727 ms

profile.svg

profile.svg

697 ms

intro-2024.svg

intro-2024.svg

696 ms

intro-2025.svg

intro-2025.svg

632 ms

arrow-down.svg

arrow-down.svg

604 ms

csm_Sokhiev-Tugan-c-Marc_Brenner_e40a09a278.jpg

csm_Sokhiev-Tugan-c-Marc_Brenner_e40a09a278.jpg

608 ms

video-play.svg

video-play.svg

689 ms

gtm.js

gtm.js

87 ms

player_api

player_api

58 ms

main.js

main.js

18 ms

www-widgetapi.js

www-widgetapi.js

12 ms

Accessibility Review

osr.ch accessibility score

93

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

osr.ch best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

osr.ch SEO score

86

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

Links do not have descriptive text

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

osr.ch

Open Graph data is detected on the main page of OSR. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: