2.1 sec in total
254 ms
1.6 sec
207 ms
Welcome to chemieseite.de homepage info - get ready to check Chemieseite best content for Germany right away, or after learning these important things about chemieseite.de
Chemie im Allgemeinen, Anorganik, Organik sowie Besprechung der Hauptelemente. Eine Webseite für Studenten und Schüler, die ein kompaktes Wissen zum Fach Chemie benötigen.
Visit chemieseite.deWe analyzed Chemieseite.de page load time and found that the first response time was 254 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
chemieseite.de performance score
name
value
score
weighting
Value4.6 s
13/100
10%
Value5.0 s
26/100
25%
Value7.8 s
23/100
10%
Value2,680 ms
4/100
30%
Value0.127
82/100
15%
Value14.4 s
9/100
10%
254 ms
298 ms
108 ms
200 ms
36 ms
Our browser made a total of 47 requests to load all elements on the main page. We found that 34% of them (16 requests) were addressed to the original Chemieseite.de, 11% (5 requests) were made to Pagead2.googlesyndication.com and 9% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (516 ms) belongs to the original domain Chemieseite.de.
Page size can be reduced by 186.8 kB (20%)
926.0 kB
739.2 kB
In fact, the total size of Chemieseite.de main page is 926.0 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. 40% of websites need less resources to load. Images take 588.5 kB which makes up the majority of the site volume.
Potential reduce by 8.6 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 8.6 kB or 69% of the original size.
Potential reduce by 9.8 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. Chemieseite images are well optimized though.
Potential reduce by 150.3 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 150.3 kB or 49% of the original size.
Potential reduce by 18.0 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. Chemieseite.de needs all CSS files to be minified and compressed as it can save up to 18.0 kB or 85% of the original size.
Number of requests can be reduced by 17 (41%)
41
24
The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chemieseite. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.
chemieseite.de
254 ms
www.chemieseite.de
298 ms
standardstyle.css
108 ms
jquery.cookiebar.css
200 ms
css
36 ms
json2.min.js
36 ms
jquery.min.js
54 ms
jstorage.min.js
51 ms
counter.js
219 ms
jquery.cookiebar.js
219 ms
animation.js
219 ms
show_ads.js
20 ms
adsbygoogle.js
26 ms
brand
29 ms
brand
52 ms
zrt_lookup.html
38 ms
show_ads_impl.js
41 ms
subtle-white-feathers-pngquant.png
336 ms
wasser_first_komprimiert2.png
108 ms
transparentespixel.gif
134 ms
allgemeineChemie_klein.png
134 ms
anorganischeChemie_klein.png
215 ms
organischeChemie_klein.png
201 ms
hauptelemente_klein.png
223 ms
xB6kRicEILL8IHLLClUt2PesZW2xOQ-xsNqO47m55DA.ttf
69 ms
ads
211 ms
ads
145 ms
osd.js
47 ms
google_custom_search_watermark.gif
51 ms
analytics.js
49 ms
counter.php
154 ms
measure.min.js
17 ms
ads.min.js
17 ms
textlink-ads.jpg
11 ms
textlink-ads.jpg
4 ms
collect
13 ms
a.js
5 ms
collect
61 ms
abg.js
20 ms
16127130871605926857
48 ms
s
3 ms
m_js_controller.js
7 ms
googlelogo_color_112x36dp.png
49 ms
x_button_blue2.png
37 ms
wasser_anim_komprimiert2.png
516 ms
ui
35 ms
MdyApZkAHG2-UELdOwjNjjFZXSz-CGj4o1JtDR7aGgs.js
4 ms
chemieseite.de accessibility score
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-*] attributes do not match their roles
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
Form elements do not have associated labels
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
chemieseite.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
Page has valid source maps
chemieseite.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 Chemieseite.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 Chemieseite.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.
chemieseite.de
Open Graph description is not detected on the main page of Chemieseite. 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: