Tools & Wizards About Us
voltwerk.de screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

voltwerk.de

Speichertechnik für Solaranlagen – Jetzt auf Immobilien und Hausbau

Page Load Speed

3.2 sec in total

First Response

376 ms

Resources Loaded

2.3 sec

Page Rendered

526 ms

voltwerk.de screenshot

About Website

Welcome to voltwerk.de homepage info - get ready to check Voltwerk best content right away, or after learning these important things about voltwerk.de

Wie Sie die Kraft der Sonne speichern - Worauf es beim Kauf an kommt - Systeme im Vergleich - Funktionsweise - Kosten - Vor- und Nachteile

Visit voltwerk.de

Key Findings

We analyzed Voltwerk.de page load time and found that the first response time was 376 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

voltwerk.de performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

26/100

25%

SI (Speed Index)

Value4.8 s

67/100

10%

TBT (Total Blocking Time)

Value580 ms

51/100

30%

CLS (Cumulative Layout Shift)

Value0.068

96/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

voltwerk.de

376 ms

716 ms

css

23 ms

7u3vq.css

221 ms

7u3vq.css

445 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Voltwerk.de, 90% (45 requests) were made to Immobilien-und-hausbau.de and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (836 ms) relates to the external source Immobilien-und-hausbau.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 102.1 kB (11%)

Content Size

915.1 kB

After Optimization

813.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Voltwerk.de main page is 915.1 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. 35% of websites need less resources to load. Images take 673.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 85.4 kB

  • Original 107.3 kB
  • After minification 107.1 kB
  • After compression 21.9 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 85.4 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 15.6 kB

  • Original 673.7 kB
  • After minification 658.0 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. Voltwerk images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 482 B

  • Original 100.3 kB
  • After minification 100.3 kB
  • After compression 99.9 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

-2%

Potential reduce by 611 B

  • Original 33.8 kB
  • After minification 33.8 kB
  • After compression 33.2 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. Voltwerk.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (28%)

Requests Now

47

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Voltwerk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

voltwerk.de

voltwerk.de

376 ms

716 ms

css

css

23 ms

7u3vq.css

7u3vq.css

221 ms

7u3vq.css

7u3vq.css

445 ms

2dreq.js

2dreq.js

457 ms

2dreq.js

2dreq.js

456 ms

2dreq.js

2dreq.js

338 ms

jquery-migrate-1.2.1.min.js

jquery-migrate-1.2.1.min.js

6 ms

g1d7h.js

g1d7h.js

455 ms

js

js

77 ms

2dreq.js

2dreq.js

240 ms

2dreq.js

2dreq.js

353 ms

2dreq.js

2dreq.js

473 ms

2dreq.js

2dreq.js

474 ms

2dreq.js

2dreq.js

475 ms

7txql.js

7txql.js

474 ms

2dreq.js

2dreq.js

474 ms

7txql.js

7txql.js

475 ms

immobilien-und-hausbau.jpg

immobilien-und-hausbau.jpg

174 ms

solaranlage_1510736257-940x400.jpg

solaranlage_1510736257-940x400.jpg

281 ms

immobilienmarkt-174x98.jpg

immobilienmarkt-174x98.jpg

197 ms

muenchen-1-174x98.jpg

muenchen-1-174x98.jpg

198 ms

terrasse-sonnensegel-174x98.jpg

terrasse-sonnensegel-174x98.jpg

197 ms

wand-malern-174x98.jpg

wand-malern-174x98.jpg

198 ms

strategie-immobilieninvest-174x98.jpg

strategie-immobilieninvest-174x98.jpg

240 ms

malerbeiten-hausbau-1-174x98.jpg

malerbeiten-hausbau-1-174x98.jpg

290 ms

abfluss-reinigen-174x98.jpg

abfluss-reinigen-174x98.jpg

289 ms

nordzypern-1-174x98.jpg

nordzypern-1-174x98.jpg

289 ms

alarmanlage-einfamilienhaus-1-174x98.jpg

alarmanlage-einfamilienhaus-1-174x98.jpg

291 ms

wohngeneration-1-174x98.jpg

wohngeneration-1-174x98.jpg

345 ms

glasgestaltung-01-174x98.jpg

glasgestaltung-01-174x98.jpg

390 ms

brandschutzfenster-01-174x98.jpg

brandschutzfenster-01-174x98.jpg

398 ms

renovierung-immobilie-174x98.jpg

renovierung-immobilie-174x98.jpg

399 ms

immobilienmarkt-70x53.jpg

immobilienmarkt-70x53.jpg

398 ms

muenchen-1-70x53.jpg

muenchen-1-70x53.jpg

400 ms

terrasse-sonnensegel-70x53.jpg

terrasse-sonnensegel-70x53.jpg

460 ms

wand-malern-70x53.jpg

wand-malern-70x53.jpg

499 ms

strategie-immobilieninvest-70x53.jpg

strategie-immobilieninvest-70x53.jpg

507 ms

AMK-Das-ideale-Mass-finden-1-580x326.jpg

AMK-Das-ideale-Mass-finden-1-580x326.jpg

508 ms

modernisierung_1506665239.jpg

modernisierung_1506665239.jpg

728 ms

47387_bild2_Foto_djd_Bauherren_Schutzbund-70x53.jpg

47387_bild2_Foto_djd_Bauherren_Schutzbund-70x53.jpg

509 ms

baustelle_1516479393.jpg

baustelle_1516479393.jpg

803 ms

abriss_1528750264.jpg

abriss_1528750264.jpg

827 ms

eigenheim_1511189535.jpg

eigenheim_1511189535.jpg

836 ms

facebook.png

facebook.png

617 ms

twitter.png

twitter.png

619 ms

google-plus.png

google-plus.png

728 ms

rss.png

rss.png

652 ms

o-0mIpQlx3QUlC5A4PNB6Ryti20_6n1iPHjcz6L1SoM-jCpoiyD9A-9a6Vc.ttf

o-0mIpQlx3QUlC5A4PNB6Ryti20_6n1iPHjcz6L1SoM-jCpoiyD9A-9a6Vc.ttf

61 ms

Accessibility Review

voltwerk.de accessibility score

89

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

Form elements do not have associated labels

Best Practices

voltwerk.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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

voltwerk.de SEO score

98

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Voltwerk.de 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 Voltwerk.de 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

voltwerk.de

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