4.3 sec in total
425 ms
3.6 sec
232 ms
Click here to check amazing Leifiphysik content for Germany. Otherwise, check out these important facts you probably never knew about leifiphysik.de
Physikportal für Schüler, Lehrer und Eltern mit Materialien, Versuchen, Aufgaben, Tests und Lehrplänen zur Ergänzung des Physikunterrichts.
Visit leifiphysik.deWe analyzed Leifiphysik.de page load time and found that the first response time was 425 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
leifiphysik.de performance score
name
value
score
weighting
Value6.8 s
1/100
10%
Value14.0 s
0/100
25%
Value7.2 s
30/100
10%
Value1,680 ms
11/100
30%
Value1.191
1/100
15%
Value16.3 s
5/100
10%
425 ms
710 ms
207 ms
203 ms
205 ms
Our browser made a total of 112 requests to load all elements on the main page. We found that 96% of them (108 requests) were addressed to the original Leifiphysik.de, 2% (2 requests) were made to Google-analytics.com and 2% (2 requests) were made to . The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Leifiphysik.de.
Page size can be reduced by 1.0 MB (61%)
1.7 MB
651.1 kB
In fact, the total size of Leifiphysik.de main page is 1.7 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. 50% of websites need less resources to load. CSS take 667.2 kB which makes up the majority of the site volume.
Potential reduce by 49.6 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 49.6 kB or 80% of the original size.
Potential reduce by 58.2 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, Leifiphysik needs image optimization as it can save up to 58.2 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 493.3 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 493.3 kB or 75% of the original size.
Potential reduce by 417.2 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. Leifiphysik.de needs all CSS files to be minified and compressed as it can save up to 417.2 kB or 63% of the original size.
Number of requests can be reduced by 55 (53%)
104
49
The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leifiphysik. 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 from 37 to 1 for CSS and as a result speed up the page load time.
leifiphysik.de
425 ms
www.leifiphysik.de
710 ms
system.base.css
207 ms
system.menus.css
203 ms
system.messages.css
205 ms
system.theme.css
209 ms
socialshareprivacy.css
211 ms
colorbox_node.css
213 ms
comment.css
298 ms
field.css
300 ms
logintoboggan.css
311 ms
node.css
315 ms
search.css
316 ms
user.css
317 ms
views.css
397 ms
ckeditor.css
398 ms
colorbox_style.css
414 ms
ctools.css
418 ms
lightbox.css
419 ms
modal.css
420 ms
modal_forms_popup.css
494 ms
leifi_share_email_block.css
494 ms
leifi-alpha-default-normal.css
514 ms
leifi-alpha-default.css
517 ms
custom.css
517 ms
alpha-reset.css
518 ms
alpha-alpha.css
590 ms
formalize.css
591 ms
omega-text.css
611 ms
omega-menu.css
614 ms
omega-forms.css
614 ms
global.css
749 ms
print.css
684 ms
fonts.css
684 ms
leifi-leifi-default.css
705 ms
leifi-leifi-default-normal.css
706 ms
leifi-default-normal-16.css
707 ms
js_gXGQPVsYr4CtgXkRg81CynHH6ATIwzlo_khhCBgrhqQ.js
986 ms
js_JJVUI7slKd_d9bPmJ2KicRcXhXAWeOa9q3sXd4304Yw.js
684 ms
js_DLJwDyPnmdOGodVMYeTLbGuWITOjGwYOUdCBKhRVooI.js
604 ms
lightbox.js
697 ms
js_ZmH7fE4Q4Niu-2prMMM4voVWv8qSXy-cHVVrLpoSC3c.js
601 ms
MathJax.js
730 ms
js_EvQU4stUHpbWAZYZpsPoowkg-AgJFF-SXkAS847wc1s.js
689 ms
js_b3j0f_d2i1c7f5-tquLYQpyXV7-oRKxAcZvWhDmvdTc.js
604 ms
js_ZmxD5VqKTLy5qCzmNyN_2m3BcUCBz_CHmBVkTG1Wd-8.js
816 ms
js_jMoOo2VwKOe9riU_B05tCt37KVRclH20P0_YgvSoqWw.js
683 ms
leifi.js
679 ms
TeX-AMS-MML_HTMLorMML.js
282 ms
ga.js
117 ms
footer.html
188 ms
bg-header.jpg
124 ms
leifi-physik-logo.jpg
189 ms
login_lock.png
124 ms
search-submit.png
124 ms
jhs_leifi_stoerer_fahne_rz_0.png
191 ms
joachim-herz-stiftung-logo-neu.jpg
202 ms
socialshareprivacy_on_off.png
204 ms
mail-icon-on.png
302 ms
slide_herz.jpg
371 ms
YouTube-icon-full_color.png
375 ms
slide_the_universe_timeline_nasa.jpg
307 ms
20160201_leifi_slide_vortex.jpg
307 ms
jahrgang_05.jpg
352 ms
jahrgang_06.jpg
373 ms
jahrgang_07.jpg
400 ms
jahrgang_08.jpg
402 ms
jahrgang_09.jpg
445 ms
jahrgang_10.jpg
464 ms
jahrgang_11.jpg
465 ms
jahrgang_12.jpg
465 ms
jahrgang_13_0.jpg
493 ms
mechanik.png
494 ms
optik.png
537 ms
elektrizitat.png
557 ms
elektronik_55x52_0.png
557 ms
waermelehre.png
558 ms
akkustik_55x52.png
590 ms
quantenphysik_55x52_0.png
591 ms
astronomie.png
629 ms
atomphysik.png
649 ms
kernphysik_55x52_3.png
649 ms
relativitat.png
650 ms
ubergreifend.png
692 ms
de.lang
662 ms
__utm.gif
11 ms
stylesheet_8b9c2e8d89.css
607 ms
styles.min.css
1109 ms
javascript_dd82474708.js
625 ms
Ubuntu.woff
1062 ms
Ubuntu-Medium.woff
929 ms
Ubuntu-Light.woff
1028 ms
Ubuntu-Bold.woff
904 ms
feedback_0.png
642 ms
facebook-footer.png
638 ms
bundesland-select-icon.png
729 ms
leifi-slideshow-button-active.png
836 ms
leifi-slideshow-button.png
884 ms
menu-leaf.png
865 ms
arrow_next.png
877 ms
loading_animation.gif
925 ms
MenuArrow-15.png
944 ms
dummy_facebook.png
615 ms
dummy_twitter.png
615 ms
socialshareprivacy_on_off.png
616 ms
logo.png
100 ms
csm_ls_44c1557c0f.png
154 ms
csm_3_a27ddc2734.png
178 ms
csm_w_9ba6bd4901.png
175 ms
csm_kd_71e18f352a.jpg
176 ms
BirZ46PEKXkQXnogwINHBkwhD0xWK2holFHtYrJcQU69r28DSeHRmiCwUPOji8bT7T0snJGrhthfuq5D3u9cTBmz1b48fwvz4ZPPRF2t3BRE=
3 ms
f4IcyPG5uPvgAbrwSY
2 ms
leifiphysik.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
[id] attributes on active, focusable elements are not unique
Some elements have a [tabindex] value greater than 0
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
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
Image elements do not have [alt] attributes
Links do not have a discernible name
leifiphysik.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
leifiphysik.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
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 Leifiphysik.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 Leifiphysik.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.
leifiphysik.de
Open Graph data is detected on the main page of Leifiphysik. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: