4.3 sec in total
318 ms
3.7 sec
274 ms
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.deWe analyzed Voltwerk.de page load time and found that the first response time was 318 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
voltwerk.de performance score
name
value
score
weighting
Value3.6 s
31/100
10%
Value4.0 s
48/100
25%
Value5.4 s
56/100
10%
Value110 ms
98/100
30%
Value0.068
96/100
15%
Value5.1 s
75/100
10%
318 ms
1023 ms
770 ms
809 ms
482 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Voltwerk.de, 70% (40 requests) were made to Ae-bpte.resource.bosch.com and 19% (11 requests) were made to Bosch-power-tec.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Ae-bpte.resource.bosch.com.
Page size can be reduced by 967.4 kB (72%)
1.3 MB
377.0 kB
In fact, the total size of Voltwerk.de main page is 1.3 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. 20% of websites need less resources to load. CSS take 557.0 kB which makes up the majority of the site volume.
Potential reduce by 46.7 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 11.7 kB, which is 20% 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 46.7 kB or 81% of the original size.
Potential reduce by 21.0 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.
Potential reduce by 396.5 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 396.5 kB or 76% of the original size.
Potential reduce by 503.2 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 needs all CSS files to be minified and compressed as it can save up to 503.2 kB or 90% of the original size.
Number of requests can be reduced by 28 (53%)
53
25
The browser has sent 53 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 8 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
voltwerk.de
318 ms
de
1023 ms
css.jsp
770 ms
barebone.jsp
809 ms
main.css
482 ms
includecss.css
1014 ms
includecss2.css
1076 ms
css_noprint.css
512 ms
header.js
1178 ms
footer.js
1046 ms
wtg.js
699 ms
main.js
102 ms
btnHeaderSearch.png
531 ms
bpte-hintergrund.png
214 ms
bg_metanav.gif
110 ms
languageselector_bgtop_active.png
117 ms
languageselector_arrow.png
116 ms
languageselector_bgBtm.png
209 ms
bosch_logo_german.png
124 ms
bgNaviMain.png
224 ms
bgNaviMainInv.png
225 ms
navseparator.gif
223 ms
lnkstylecntlink_bottom_sprite_newie9.png
236 ms
bgNaviMainSub.png
310 ms
lnkstylesubnavidefault.png
323 ms
bg_searchinput.gif
334 ms
bgsearchbotv2.png
335 ms
982x350_Stage-mutter_kind_w982.jpg
430 ms
982x350_Stage-kind_badewanne_w982.jpg
545 ms
tv_pv_wechselrichter_w238.jpg
414 ms
tv_energiemanagement_w238.jpg
433 ms
tv_ekey_w238.jpg
441 ms
tv_haendlersuche_w238.jpg
446 ms
8539_w176.jpg
520 ms
PD2015_RD_rgb_w176.jpg
544 ms
lnkstylecntlink_b1.gif
515 ms
lnkstylecntlink_bottom_sprite_new.gif
525 ms
share_linkedin.png
103 ms
lnkstyleCntLink_top_new.png
521 ms
cookie_strictly_active.png
688 ms
cookie_convenience.png
764 ms
cookie_tracking.png
623 ms
cookie_targeting.png
764 ms
ico_footerPrint.gif
614 ms
footer_facebook.png
632 ms
footer_youtube.png
764 ms
bosch-overlay-login-fancybox.js
206 ms
main.css
107 ms
login-with-steps.css
202 ms
ipa.asp
190 ms
wtid.js
190 ms
edif.html
189 ms
525 ms
ico_loading_thickbox.gif
103 ms
css_print.css
118 ms
cssoverlay.css
168 ms
dcs.gif
189 ms
voltwerk.de accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Form elements do not have associated labels
voltwerk.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
voltwerk.de SEO score
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
Document uses legible font sizes
Tap targets are not sized appropriately
DE
N/A
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 neither this language nor any other was claimed in <html> or <meta> tags. 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.
voltwerk.de
Open Graph description is not detected on the main page of Voltwerk. 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: