6.7 sec in total
325 ms
5.7 sec
593 ms
Welcome to leibniz-ipht.de homepage info - get ready to check Leibniz Ipht best content for Germany right away, or after learning these important things about leibniz-ipht.de
Photonics for Life. We explore photonic and optical technologies: solutions with light to make life safer and healthier.
Visit leibniz-ipht.deWe analyzed Leibniz-ipht.de page load time and found that the first response time was 325 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
leibniz-ipht.de performance score
name
value
score
weighting
Value4.7 s
13/100
10%
Value13.0 s
0/100
25%
Value14.2 s
1/100
10%
Value6,230 ms
0/100
30%
Value0.002
100/100
15%
Value13.3 s
12/100
10%
325 ms
350 ms
1664 ms
447 ms
433 ms
Our browser made a total of 34 requests to load all elements on the main page. We found that all of those requests were addressed to Leibniz-ipht.de and no external sources were called. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Leibniz-ipht.de.
Page size can be reduced by 159.3 kB (9%)
1.7 MB
1.6 MB
In fact, the total size of Leibniz-ipht.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. 35% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 100.0 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 39.6 kB, which is 35% 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 100.0 kB or 89% of the original size.
Potential reduce by 58.5 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. Leibniz Ipht images are well optimized though.
Potential reduce by 40 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 700 B
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. Leibniz-ipht.de has all CSS files already compressed.
Number of requests can be reduced by 5 (19%)
26
21
The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leibniz Ipht. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
leibniz-ipht.de
325 ms
www.leibniz-ipht.de
350 ms
1664 ms
autoptimize_f260737a6e3be4ee3d07ae864f08d66a.css
447 ms
jquery-1.11.1.min.js
433 ms
autoptimize_5884e8d41cdfe6da5db276b1339a31d0.js
1086 ms
wp-emoji-release.min.js
114 ms
Logo.svg
111 ms
pfeil_green.svg
107 ms
pfeil_weiss.svg
183 ms
lupe.svg
219 ms
close_weiss.svg
219 ms
linie.svg
288 ms
ipht-2663.jpeg
911 ms
webseite-3.jpg
1161 ms
weiterlesen.svg
324 ms
dagmar-schipanski.jpg
1189 ms
webseite-2.jpg
1315 ms
topics002-300x262.png
1493 ms
j14111732-scaled.jpg
1893 ms
logo-weiss.png
1628 ms
ipht-4765.jpeg
2142 ms
ipht-6455-scaled.jpg
2104 ms
totop.svg
1375 ms
facebook.svg
1481 ms
twitter.svg
1553 ms
linkedin.svg
1587 ms
instagram.svg
1658 ms
youtube.svg
1686 ms
open-sans-v18-latin-regular.woff
1692 ms
fa-solid-900.woff
1829 ms
fa-regular-400.woff
1749 ms
fa-brands-400.woff
1762 ms
fontawesome-webfont.woff
1963 ms
leibniz-ipht.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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
ARIA IDs are not unique
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
Heading elements are not in a sequentially-descending order
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
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>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
leibniz-ipht.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
Missing source maps for large first-party JavaScript
leibniz-ipht.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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 doesn't use legible font sizes
EN
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leibniz-ipht.de can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed German language. Our system also found out that Leibniz-ipht.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.
leibniz-ipht.de
Open Graph data is detected on the main page of Leibniz Ipht. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: