Tools & Wizards About Us
rast.ch screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

rast.ch

Home - Rast Kaffee AG

Page Load Speed

3.6 sec in total

First Response

299 ms

Resources Loaded

3.1 sec

Page Rendered

232 ms

rast.ch screenshot

About Website

Visit rast.ch now to see the best up-to-date Rast content for Switzerland and also check out these interesting facts you probably never knew about rast.ch

Rast Kaffee verbindet 100-jährige Familientradition mit kompromisloser Kaffee-Qualität. Wir bieten über 50 verschiedene Kaffee-Sorten aus unserer hauseigenen Rösterei an. In unserer Akademie gibt unse...

Visit rast.ch

Key Findings

We analyzed Rast.ch page load time and found that the first response time was 299 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

rast.ch performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value13.4 s

2/100

10%

TBT (Total Blocking Time)

Value1,090 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.592

11/100

15%

TTI (Time to Interactive)

Value41.9 s

0/100

10%

Network Requests Diagram

rast.ch

299 ms

www.rast.ch

924 ms

asm4ona.js

217 ms

bootstrap.min.css

469 ms

jquery.mmenu.css

289 ms

Our browser made a total of 27 requests to load all elements on the main page. We found that 67% of them (18 requests) were addressed to the original Rast.ch, 15% (4 requests) were made to Use.typekit.net and 11% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (924 ms) belongs to the original domain Rast.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 256.9 kB (57%)

Content Size

451.9 kB

After Optimization

195.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rast.ch main page is 451.9 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. CSS take 221.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 22.5 kB

  • Original 28.6 kB
  • After minification 26.7 kB
  • After compression 6.1 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 22.5 kB or 79% of the original size.

Image Optimization

-17%

Potential reduce by 24.9 kB

  • Original 145.9 kB
  • After minification 121.0 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, Rast needs image optimization as it can save up to 24.9 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

-46%

Potential reduce by 25.6 kB

  • Original 55.5 kB
  • After minification 55.5 kB
  • After compression 30.0 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 25.6 kB or 46% of the original size.

CSS Optimization

-83%

Potential reduce by 184.0 kB

  • Original 221.9 kB
  • After minification 220.3 kB
  • After compression 37.9 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. Rast.ch needs all CSS files to be minified and compressed as it can save up to 184.0 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (30%)

Requests Now

23

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rast. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rast.ch

rast.ch

299 ms

www.rast.ch

www.rast.ch

924 ms

asm4ona.js

asm4ona.js

217 ms

bootstrap.min.css

bootstrap.min.css

469 ms

jquery.mmenu.css

jquery.mmenu.css

289 ms

app.css

app.css

661 ms

jquery.min.js

jquery.min.js

41 ms

lib.js

lib.js

870 ms

app.js

app.js

412 ms

www.rast.ch

www.rast.ch

135 ms

analytics.js

analytics.js

124 ms

logo.png

logo.png

120 ms

icon-wk-topnav.png

icon-wk-topnav.png

121 ms

icon-lock-topnav.png

icon-lock-topnav.png

120 ms

testline.png

testline.png

210 ms

icon-twitter.png

icon-twitter.png

119 ms

icon-fb.png

icon-fb.png

216 ms

icon-gplus.png

icon-gplus.png

223 ms

icon-heart.png

icon-heart.png

212 ms

icon-wk.png

icon-wk.png

213 ms

icon-lock.png

icon-lock.png

306 ms

toplink.png

toplink.png

299 ms

gkXG-lWRRqN5mRrPbz5slnVGS-XX9sJtpzbccZ0a2n9ffH-sgsMmeMJ6Mk6f5Mj.woff

gkXG-lWRRqN5mRrPbz5slnVGS-XX9sJtpzbccZ0a2n9ffH-sgsMmeMJ6Mk6f5Mj.woff

133 ms

C-hOknuf-55iQkbpzJmBdD0xgd-wCewb8EQFHPEuqctff4kQgsMmeMJ6Mk6f5MS.woff

C-hOknuf-55iQkbpzJmBdD0xgd-wCewb8EQFHPEuqctff4kQgsMmeMJ6Mk6f5MS.woff

161 ms

collect

collect

13 ms

collect

collect

9 ms

p.gif

p.gif

133 ms

Accessibility Review

rast.ch accessibility score

68

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

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

rast.ch best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

rast.ch SEO score

88

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

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

rast.ch

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