Tools & Wizards About Us
tandem.ch screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

tandem.ch

TANDEM Lausanne et Riviera. Votre spécialiste 100% vélo électrique.

Page Load Speed

5 sec in total

First Response

408 ms

Resources Loaded

4 sec

Page Rendered

596 ms

tandem.ch screenshot

About Website

Click here to check amazing TANDEM content for Switzerland. Otherwise, check out these important facts you probably never knew about tandem.ch

Tandem Lausanne et Riviera, votre spécialiste 100% vélo électrique pour la région Morges, Lausanne, Riviera, Vevey, La Tour-de-Peilz, Montreux.

Visit tandem.ch

Key Findings

We analyzed Tandem.ch page load time and found that the first response time was 408 ms and then it took 4.6 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

tandem.ch performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value32.8 s

0/100

25%

SI (Speed Index)

Value11.8 s

4/100

10%

TBT (Total Blocking Time)

Value2,130 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value31.6 s

0/100

10%

Network Requests Diagram

tandem.ch

408 ms

tandem.ch

517 ms

www.tandem.ch

879 ms

app-6c76721023e1af4c5135aed8be35b306.css

407 ms

jquery.min.js

43 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 63% of them (41 requests) were addressed to the original Tandem.ch, 9% (6 requests) were made to Fonts.gstatic.com and 8% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Tandem.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.3 MB (50%)

Content Size

4.5 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tandem.ch main page is 4.5 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. 55% of websites need less resources to load. Javascripts take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 45.7 kB

  • Original 62.9 kB
  • After minification 52.0 kB
  • After compression 17.2 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. This page needs HTML code to be minified as it can gain 10.9 kB, which is 17% 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 45.7 kB or 73% of the original size.

Image Optimization

-7%

Potential reduce by 114.6 kB

  • Original 1.6 MB
  • After minification 1.4 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. TANDEM images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 1.9 MB

  • Original 2.6 MB
  • After minification 2.6 MB
  • After compression 668.1 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 1.9 MB or 74% of the original size.

CSS Optimization

-64%

Potential reduce by 159.1 kB

  • Original 248.9 kB
  • After minification 248.4 kB
  • After compression 89.7 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. Tandem.ch needs all CSS files to be minified and compressed as it can save up to 159.1 kB or 64% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (30%)

Requests Now

56

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TANDEM. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tandem.ch

tandem.ch

408 ms

tandem.ch

tandem.ch

517 ms

www.tandem.ch

www.tandem.ch

879 ms

app-6c76721023e1af4c5135aed8be35b306.css

app-6c76721023e1af4c5135aed8be35b306.css

407 ms

jquery.min.js

jquery.min.js

43 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

53 ms

41 ms

picturefill.min.js

picturefill.min.js

57 ms

js

js

70 ms

css

css

43 ms

app-885183f2b066a32c49ce82218f07a8b2.js

app-885183f2b066a32c49ce82218f07a8b2.js

1482 ms

piwik.js

piwik.js

1056 ms

0LJdJ4zClP4

0LJdJ4zClP4

219 ms

icon-search-a77f85de71eb68e7a3fa27e8e58f88e6.svg

icon-search-a77f85de71eb68e7a3fa27e8e58f88e6.svg

215 ms

icon-velos-4a6667f91a5ab4599ce954450eabbd96.svg

icon-velos-4a6667f91a5ab4599ce954450eabbd96.svg

588 ms

icon-calendar-fc08b313245ab3485461964f08c10ff1.svg

icon-calendar-fc08b313245ab3485461964f08c10ff1.svg

808 ms

icon-accessoires-a26130638666f2dfdd7e82f6e593f7c1.svg

icon-accessoires-a26130638666f2dfdd7e82f6e593f7c1.svg

809 ms

icon-reparation-0f11543e56405469fd4d44ee6485df23.svg

icon-reparation-0f11543e56405469fd4d44ee6485df23.svg

810 ms

icon-partner-7b824dc89bc0bed7c288eaf27be0243d.svg

icon-partner-7b824dc89bc0bed7c288eaf27be0243d.svg

808 ms

icon-durabilite-f40de9af3a9754f95bb80868bdf543d3.svg

icon-durabilite-f40de9af3a9754f95bb80868bdf543d3.svg

810 ms

icon-equipe-b5fbf7548f34a5bc12549b3b1ecee833.svg

icon-equipe-b5fbf7548f34a5bc12549b3b1ecee833.svg

836 ms

icon-configurateur-9066eb2012b40cd4f49e014f52d6e9ff.svg

icon-configurateur-9066eb2012b40cd4f49e014f52d6e9ff.svg

836 ms

icon-blog-67d403db16f6936994c963743ce90302.svg

icon-blog-67d403db16f6936994c963743ce90302.svg

838 ms

icon-login-c64b8fe687592c8790b34fdc9e717b4d.svg

icon-login-c64b8fe687592c8790b34fdc9e717b4d.svg

837 ms

logo-tandem-30517dd552ad17be358af232fb88f5e9.svg

logo-tandem-30517dd552ad17be358af232fb88f5e9.svg

839 ms

icon-mail-60126ac2f9798aa7944051943f6a8b27.svg

icon-mail-60126ac2f9798aa7944051943f6a8b27.svg

940 ms

magnifier-018a70ccce07b7514fef0d3f8cd2729c.svg

magnifier-018a70ccce07b7514fef0d3f8cd2729c.svg

942 ms

velo-header-28232c2f5d97f6254dbc8fdd979902c3.svg

velo-header-28232c2f5d97f6254dbc8fdd979902c3.svg

956 ms

icon-cat-calendar-1689987be98e2af398990fb84886b7ba.svg

icon-cat-calendar-1689987be98e2af398990fb84886b7ba.svg

944 ms

211216-campagne-affichage-RDV-slider.jpg

211216-campagne-affichage-RDV-slider.jpg

1399 ms

icon-cat-news-front-7c8d53d11f526f06cd97da33c5089552.svg

icon-cat-news-front-7c8d53d11f526f06cd97da33c5089552.svg

1043 ms

journees-speciales-velo-cargo.jpg

journees-speciales-velo-cargo.jpg

1476 ms

icon-cat-nouveaute-front-549697e6e1c1f333892265114ee53754.svg

icon-cat-nouveaute-front-549697e6e1c1f333892265114ee53754.svg

1051 ms

ouvert-lundi-banner.jpg

ouvert-lundi-banner.jpg

1274 ms

bosch-display.jpg

bosch-display.jpg

1114 ms

icon-cat-news-6b4ac2276914036d0c74cdb67b03eaac.svg

icon-cat-news-6b4ac2276914036d0c74cdb67b03eaac.svg

1147 ms

icon-cat-nouveaute-810c5c072adbe5a766b6ad6f896881a1.svg

icon-cat-nouveaute-810c5c072adbe5a766b6ad6f896881a1.svg

1153 ms

illustration_ville_lausanne_v2-dd2cf9e2d6d2d05e28505a0a90c8c9ee.png

illustration_ville_lausanne_v2-dd2cf9e2d6d2d05e28505a0a90c8c9ee.png

1220 ms

illustration_ville_vevey-311255f982db4f27dea8cd24312abe34.png

illustration_ville_vevey-311255f982db4f27dea8cd24312abe34.png

1254 ms

icon-tour-guide-white-3ea3cbf95a414796546faf06b7a31b97.svg

icon-tour-guide-white-3ea3cbf95a414796546faf06b7a31b97.svg

1256 ms

P1000978_resultat.jpg

P1000978_resultat.jpg

1350 ms

icon-calendar-white-48763cbef9d60ff7ea5d26643af0cd27.svg

icon-calendar-white-48763cbef9d60ff7ea5d26643af0cd27.svg

1356 ms

211216-campagne-affichage-SGA-2022-chargerHS.jpg

211216-campagne-affichage-SGA-2022-chargerHS.jpg

1690 ms

icon-subvention-108df67d0c40ebfff52565e39b7f80b0.svg

icon-subvention-108df67d0c40ebfff52565e39b7f80b0.svg

1375 ms

RM_MY2022_Multicharger-Mixte-square-scaled.jpg

RM_MY2022_Multicharger-Mixte-square-scaled.jpg

1484 ms

journees-speciales-velo-cargo.jpg

journees-speciales-velo-cargo.jpg

1482 ms

16-ans-de-TANDEM-14-ans-de-stromvelo-500CHF-de-rabais-sur-les-45kmh-big.jpg

16-ans-de-TANDEM-14-ans-de-stromvelo-500CHF-de-rabais-sur-les-45kmh-big.jpg

1489 ms

ASCENSION-OUVERT-VENDREDI-ET-SAMEDI.jpg

ASCENSION-OUVERT-VENDREDI-ET-SAMEDI.jpg

1417 ms

www-player.css

www-player.css

20 ms

www-embed-player.js

www-embed-player.js

47 ms

base.js

base.js

94 ms

NaPecZTIAOhVxoMyOr9n_E7fdMPmCA.ttf

NaPecZTIAOhVxoMyOr9n_E7fdMPmCA.ttf

67 ms

NaPDcZTIAOhVxoMyOr9n_E7ffGjEGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffGjEGItzZg.ttf

90 ms

NaPDcZTIAOhVxoMyOr9n_E7ffBzCGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffBzCGItzZg.ttf

232 ms

NaPDcZTIAOhVxoMyOr9n_E7ffHjDGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffHjDGItzZg.ttf

232 ms

offres-specialized-2024-1.png

offres-specialized-2024-1.png

1387 ms

ad_status.js

ad_status.js

204 ms

XRk6eFbYaDme_I9SSIFgFZ9I1nSvAmlSIHv6h58Lfu0.js

XRk6eFbYaDme_I9SSIFgFZ9I1nSvAmlSIHv6h58Lfu0.js

125 ms

embed.js

embed.js

51 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

17 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

23 ms

Create

Create

85 ms

id

id

77 ms

GenerateIT

GenerateIT

13 ms

piwik.php

piwik.php

156 ms

Accessibility Review

tandem.ch accessibility score

94

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

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

Links do not have a discernible name

Best Practices

tandem.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

tandem.ch SEO score

88

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tandem.ch can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it does not match the claimed English language. Our system also found out that Tandem.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

tandem.ch

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