2 sec in total
335 ms
1.6 sec
154 ms
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Chemische Experimente mit Versuchsanleitungen...für Unterricht,Studium und zu Showzwecken! Mit detailierten Sicherheits- und Entsorgungshinweisen sowie Notfallmaßnahmen. Versuche zu allen Bereichen de...
Visit experimentalchemie.deWe analyzed Experimentalchemie.de page load time and found that the first response time was 335 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
experimentalchemie.de performance score
name
value
score
weighting
Value2.2 s
77/100
10%
Value2.2 s
94/100
25%
Value2.3 s
98/100
10%
Value10 ms
100/100
30%
Value0.083
93/100
15%
Value2.4 s
98/100
10%
335 ms
189 ms
4 ms
14 ms
138 ms
Our browser made a total of 82 requests to load all elements on the main page. We found that 62% of them (51 requests) were addressed to the original Experimentalchemie.de, 7% (6 requests) were made to Pagead2.googlesyndication.com and 7% (6 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (733 ms) belongs to the original domain Experimentalchemie.de.
Page size can be reduced by 58.1 kB (26%)
222.5 kB
164.4 kB
In fact, the total size of Experimentalchemie.de main page is 222.5 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. 35% of websites need less resources to load. Images take 127.3 kB which makes up the majority of the site volume.
Potential reduce by 26.7 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 3.5 kB, which is 11% 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 26.7 kB or 81% of the original size.
Potential reduce by 11.3 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. Experimentalchemie images are well optimized though.
Potential reduce by 18.8 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 18.8 kB or 31% of the original size.
Potential reduce by 1.2 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. Experimentalchemie.de needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 75% of the original size.
Number of requests can be reduced by 27 (36%)
75
48
The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Experimentalchemie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.
experimentalchemie.de
335 ms
experimentalchemie.css
189 ms
show_ads.js
4 ms
brand
14 ms
pphlogger.js
138 ms
showhits.php
450 ms
brand
51 ms
ca-pub-7971685445255947.js
92 ms
zrt_lookup.html
91 ms
show_ads_impl.js
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ueberschrift.jpg
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eckelinks.gif
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chemikalien-s.gif
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community-s.gif
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periodensystem-s.gif
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vdm-stern.jpg
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trennstrich.gif
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chemikalien.gif
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labor.gif
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sicherheit.gif
636 ms
shop.gif
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community.gif
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links.gif
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80 ms
newsletter.jpg
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pphlogger.php
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unclesamklein.jpg
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ads
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osd.js
16 ms
ads
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home.gif
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disclaimer.gif
671 ms
email.gif
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Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js
3 ms
ads
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ga.js
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__utm.gif
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js
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img
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15-Q115_WU__1_Fee_V1_D_Update_Mobile_120x600_EN_US.png
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lidar.js
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cTrvNaRi.html
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suche-r.gif
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ui
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experimentalchemie.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.
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
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
Form elements do not have associated labels
experimentalchemie.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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
experimentalchemie.de SEO score
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
DE
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Experimentalchemie.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 Experimentalchemie.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
experimentalchemie.de
Open Graph description is not detected on the main page of Experimentalchemie. 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: