Tools & Wizards About Us
rs-mastering.de screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

rs-mastering.de

roger schult german audio lab - mastering filter - professional studio equipment - V2359j amp4ribbon Vorverstärker W2324 phase shifter - UF1 W2395c W2...

Page Load Speed

7 sec in total

First Response

386 ms

Resources Loaded

6.4 sec

Page Rendered

183 ms

rs-mastering.de screenshot

About Website

Click here to check amazing Rs Mastering content for Germany. Otherwise, check out these important facts you probably never knew about rs-mastering.de

Roger Schult ist spezialisiert auf die Entwicklung und Herstellung von professionellem Studio- und hochwertigem Audio-Equipment made in Germany zum Einsatz in professionellen Tonstudios und Mastering-...

Visit rs-mastering.de

Key Findings

We analyzed Rs-mastering.de page load time and found that the first response time was 386 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

rs-mastering.de performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value5.2 s

59/100

10%

TBT (Total Blocking Time)

Value4,290 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value11.0 s

21/100

10%

Network Requests Diagram

rs-mastering.de

386 ms

www.rs-mastering.de

733 ms

rs-mastering.css

381 ms

rs-mastering-navFoot.css

203 ms

sfHover.js

212 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that all of those requests were addressed to Rs-mastering.de and no external sources were called. The less responsive or slowest element that took the longest time to load (733 ms) belongs to the original domain Rs-mastering.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 66.9 kB (14%)

Content Size

492.3 kB

After Optimization

425.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rs-mastering.de main page is 492.3 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 403.4 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 20.0 kB

  • Original 24.2 kB
  • After minification 14.7 kB
  • After compression 4.2 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 9.5 kB, which is 39% 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 20.0 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 2.9 kB

  • Original 403.4 kB
  • After minification 400.5 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. Rs Mastering images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 36.9 kB

  • Original 55.6 kB
  • After minification 55.2 kB
  • After compression 18.8 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 36.9 kB or 66% of the original size.

CSS Optimization

-80%

Potential reduce by 7.1 kB

  • Original 9.0 kB
  • After minification 6.1 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. Rs-mastering.de needs all CSS files to be minified and compressed as it can save up to 7.1 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

14

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rs Mastering. According to our analytics all requests are already optimized.

Network Requests Diagram

rs-mastering.de

rs-mastering.de

386 ms

www.rs-mastering.de

www.rs-mastering.de

733 ms

rs-mastering.css

rs-mastering.css

381 ms

rs-mastering-navFoot.css

rs-mastering-navFoot.css

203 ms

sfHover.js

sfHover.js

212 ms

showpic.js

showpic.js

303 ms

logoRS_V0.png

logoRS_V0.png

125 ms

bonedo_logo.png

bonedo_logo.png

257 ms

rs_lunchbox.jpg

rs_lunchbox.jpg

240 ms

W2395c_small-2.jpg

W2395c_small-2.jpg

419 ms

W2377_5th_shipping_web-small.jpg

W2377_5th_shipping_web-small.jpg

675 ms

W2395-large.jpg

W2395-large.jpg

706 ms

startFrontendAudio.jpg

startFrontendAudio.jpg

322 ms

startW2377.jpg

startW2377.jpg

532 ms

startKMR-2.jpg

startKMR-2.jpg

559 ms

piwik.js

piwik.js

514 ms

Accessibility Review

rs-mastering.de accessibility score

83

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

[id] attributes on active, focusable elements are not unique

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

rs-mastering.de 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

High

Missing source maps for large first-party JavaScript

SEO Factors

rs-mastering.de SEO score

82

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

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rs-mastering.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Rs-mastering.de 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

rs-mastering.de

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