5.4 sec in total
483 ms
4.6 sec
236 ms
Click here to check amazing ZAHLENZORRO content for Germany. Otherwise, check out these important facts you probably never knew about zahlenzorro.de
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Visit zahlenzorro.deWe analyzed Zahlenzorro.de page load time and found that the first response time was 483 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
zahlenzorro.de performance score
name
value
score
weighting
Value2.0 s
85/100
10%
Value3.8 s
55/100
25%
Value3.6 s
86/100
10%
Value40 ms
100/100
30%
Value0.011
100/100
15%
Value4.4 s
84/100
10%
483 ms
471 ms
846 ms
165 ms
327 ms
Our browser made a total of 69 requests to load all elements on the main page. We found that 99% of them (68 requests) were addressed to the original Zahlenzorro.de, 1% (1 request) were made to Track.westermann.de. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Zahlenzorro.de.
Page size can be reduced by 274.6 kB (21%)
1.3 MB
1.0 MB
In fact, the total size of Zahlenzorro.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. 35% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.
Potential reduce by 24.3 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 5.4 kB, which is 18% 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 24.3 kB or 80% of the original size.
Potential reduce by 48.1 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. ZAHLENZORRO images are well optimized though.
Potential reduce by 115.3 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 115.3 kB or 67% of the original size.
Potential reduce by 86.9 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. Zahlenzorro.de needs all CSS files to be minified and compressed as it can save up to 86.9 kB or 90% of the original size.
Number of requests can be reduced by 35 (54%)
65
30
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZAHLENZORRO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
zahlenzorro.de
483 ms
www.zahlenzorro.de
471 ms
www.zahlenzorro.de
846 ms
main.css
165 ms
nav_left.css
327 ms
content.css
806 ms
forms.css
486 ms
nav_right.css
484 ms
fontsize.css
487 ms
font-changer.js
490 ms
jquery.js
813 ms
coda-slider-2.0.css
651 ms
jquery.easing.1.3.js
649 ms
jquery.coda-slider-2.0.js
651 ms
sortable.js
657 ms
piwik.js
978 ms
container.gif
168 ms
zahlenzorro_maus.gif
169 ms
zahlenzorro_schriftzug.gif
168 ms
header.gif
164 ms
schriftgroesse.gif
169 ms
schrift_klein_hover.gif
169 ms
schrift_gross.gif
323 ms
schrift_klein.gif
325 ms
schrift_gross_hover.gif
329 ms
logo.gif
324 ms
Illu_Iris_Blanck_2.jpg
797 ms
Illu_Iris_Blanck_4.jpg
975 ms
Illu_Iris_Blanck_3.jpg
795 ms
Illu_Iris_Blanck_6.jpg
799 ms
start_breit_but_links.gif
481 ms
start_breit_but_rechts.gif
482 ms
but_orange_on_blue.gif
640 ms
start_mittel_tab_1_hi.gif
640 ms
start_mittel_tab_2_hi.gif
801 ms
start_mittel_tab_3_hi.gif
803 ms
Illu_Iris_Blanck_462_5_blau.jpg
1130 ms
nav_left_box_orange_arrow.gif
963 ms
Illu_Iris_Blanck_462_1_blau.jpg
966 ms
Illu_Iris_Blanck_462_9_blau.jpg
1137 ms
Illu_Iris_Blanck_462_8_blau.jpg
1138 ms
start_mittel_unten.gif
1143 ms
start_schmal_oben.gif
1136 ms
sammelbild_ankuendigung.png
1146 ms
start_schmal_unten.gif
1298 ms
start_breit_oben.gif
1305 ms
zahlenzorro_app1_icon_100x100.png
1305 ms
start_breit_unten.gif
1307 ms
zahlenzorro_app2_icon_100x100.png
1311 ms
zahlenzorro_app3_icon_100x100.png
1316 ms
zahlenzorro-heft-cover_100.png
1462 ms
login_oben.gif
1404 ms
bsDruckschriftGru1-Regular.woff
1478 ms
login_mitte.gif
1314 ms
login_unten.gif
1321 ms
login_button.gif
1327 ms
nav_left_hintergrund.gif
1469 ms
nav_left_unten.gif
1476 ms
nav_left_box_oben.gif
1333 ms
antolin_40.jpg
1331 ms
diagnose_40.jpg
1336 ms
bumblebee_40.jpg
1475 ms
comenius_2010_70x70.jpg
1326 ms
gigamaus_2010_70x70.jpg
1327 ms
fragFINN_gecheckt.png
1172 ms
rechenblatt_hg.gif
1179 ms
footer.gif
1038 ms
ajax-loader.gif
1176 ms
start_mittel_tab_1.gif
1177 ms
zahlenzorro.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.
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
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
zahlenzorro.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
zahlenzorro.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
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zahlenzorro.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 Zahlenzorro.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.
zahlenzorro.de
Open Graph description is not detected on the main page of ZAHLENZORRO. 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: