3.6 sec in total
343 ms
2.7 sec
493 ms
Welcome to spektrum.com homepage info - get ready to check Spektrum best content right away, or after learning these important things about spektrum.com
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Visit spektrum.comWe analyzed Spektrum.com page load time and found that the first response time was 343 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
spektrum.com performance score
name
value
score
weighting
Value4.1 s
21/100
10%
Value5.7 s
16/100
25%
Value8.5 s
18/100
10%
Value410 ms
66/100
30%
Value0.029
100/100
15%
Value12.3 s
15/100
10%
343 ms
349 ms
612 ms
221 ms
31 ms
Our browser made a total of 60 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Spektrum.com, 45% (27 requests) were made to Spektrumverlag.de and 13% (8 requests) were made to Maps.googleapis.com. The less responsive or slowest element that took the longest time to load (691 ms) relates to the external source Spektrumverlag.de.
Page size can be reduced by 690.2 kB (49%)
1.4 MB
729.9 kB
In fact, the total size of Spektrum.com main page is 1.4 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. 55% of websites need less resources to load. Javascripts take 897.6 kB which makes up the majority of the site volume.
Potential reduce by 25.8 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 25.8 kB or 76% of the original size.
Potential reduce by 1.6 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. Spektrum images are well optimized though.
Potential reduce by 619.1 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 619.1 kB or 69% of the original size.
Potential reduce by 43.7 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. Spektrum.com needs all CSS files to be minified and compressed as it can save up to 43.7 kB or 33% of the original size.
Number of requests can be reduced by 19 (38%)
50
31
The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Spektrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and as a result speed up the page load time.
spektrum.com
343 ms
www.spektrum.com
349 ms
www.spektrumverlag.de
612 ms
minify.php
221 ms
css
31 ms
minify.php
509 ms
minify.php
399 ms
minify.php
418 ms
api.js
33 ms
wp-emoji-release.min.js
96 ms
analytics.js
148 ms
maps
158 ms
spektrumverlag.png
147 ms
back.jpg
691 ms
line_hb.png
146 ms
bubble_cp.png
146 ms
bubble_presse.png
235 ms
bubble-schreibwerkstatt.png
237 ms
bubble_wis.png
236 ms
bubble_schule1.png
236 ms
bubble_schule2.png
236 ms
bubble_schule3.png
407 ms
bubble_academianet.png
397 ms
bubble_nawik.png
395 ms
bubble_sdw.png
395 ms
download.png
395 ms
bubble_gug.png
487 ms
bubble_suw.png
485 ms
bubble_spezial.png
483 ms
bubble_online.png
485 ms
recaptcha__en.js
166 ms
www.spektrumverlag.de
516 ms
www.spektrumverlag.de
563 ms
ajax-loader.gif
448 ms
2UX7WLTfW3W8TclTUvlFyQ.woff
30 ms
Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff
40 ms
vzIUHo9z-oJ4WgkpPOtg1_esZW2xOQ-xsNqO47m55DA.woff
61 ms
d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff
61 ms
linkid.js
32 ms
embed
382 ms
collect
43 ms
anchor
34 ms
anchor
76 ms
styles__ltr.css
5 ms
-FHGegChvKELgmHNPF97Aj33qC9PBXl7UyexHItfpAU.js
19 ms
webworker.js
23 ms
logo_48.png
21 ms
2UX7WLTfW3W8TclTUvlFyQ.woff
106 ms
RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff
108 ms
recaptcha__en.js
7 ms
js
74 ms
init_embed.js
26 ms
common.js
58 ms
map.js
59 ms
google4.png
26 ms
overlay.js
24 ms
util.js
70 ms
onion.js
72 ms
search_impl.js
71 ms
stats.js
35 ms
spektrum.com 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
<frame> or <iframe> elements do not have a title
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>).
spektrum.com 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
Page has valid source maps
spektrum.com 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 Spektrum.com 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 Spektrum.com 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.
spektrum.com
Open Graph description is not detected on the main page of Spektrum. 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: