5.6 sec in total
341 ms
5.1 sec
165 ms
Visit rapp-opto.com now to see the best up-to-date Rapp Opto content and also check out these interesting facts you probably never knew about rapp-opto.com
Rapp OptoElectronic is specialized in high-performance photomanipulation and illumination systems, microscope modification, multi-photon-, spinning disk- and deep-UV microscopy and accessories. The hi...
Visit rapp-opto.comWe analyzed Rapp-opto.com page load time and found that the first response time was 341 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
rapp-opto.com performance score
name
value
score
weighting
Value3.6 s
33/100
10%
Value3.6 s
62/100
25%
Value6.7 s
36/100
10%
Value30 ms
100/100
30%
Value0.01
100/100
15%
Value5.0 s
76/100
10%
341 ms
2181 ms
114 ms
226 ms
530 ms
Our browser made a total of 110 requests to load all elements on the main page. We found that 99% of them (109 requests) were addressed to the original Rapp-opto.com, 1% (1 request) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Rapp-opto.com.
Page size can be reduced by 591.3 kB (59%)
1.0 MB
415.3 kB
In fact, the total size of Rapp-opto.com main page is 1.0 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 324.0 kB which makes up the majority of the site volume.
Potential reduce by 121.8 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 121.8 kB or 86% of the original size.
Potential reduce by 1.3 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. Rapp Opto images are well optimized though.
Potential reduce by 236.8 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 236.8 kB or 73% of the original size.
Potential reduce by 231.3 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. Rapp-opto.com needs all CSS files to be minified and compressed as it can save up to 231.3 kB or 85% of the original size.
Number of requests can be reduced by 86 (83%)
104
18
The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rapp Opto. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 41 to 1 for JavaScripts and from 47 to 1 for CSS and as a result speed up the page load time.
rapp-opto.com
341 ms
rapp-opto.com
2181 ms
grid.css
114 ms
base.css
226 ms
layout.css
530 ms
blog.css
431 ms
postslider.css
328 ms
buttons.css
328 ms
buttons_fullwidth.css
328 ms
comments.css
333 ms
contact.css
438 ms
slideshow.css
441 ms
gallery.css
444 ms
gallery_horizontal.css
445 ms
google_maps.css
542 ms
grid_row.css
549 ms
heading.css
554 ms
hr.css
557 ms
image.css
558 ms
magazine.css
641 ms
masonry_entries.css
650 ms
avia-snippet-site-preloader.css
656 ms
numbers.css
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portfolio.css
669 ms
slideshow_fullsize.css
670 ms
slideshow_fullscreen.css
752 ms
social_share.css
771 ms
table.css
778 ms
tabs.css
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video.css
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style.min.css
984 ms
delightful-downloads.min.css
864 ms
general.css
885 ms
lazyload-shared.css
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shortcodes.css
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avia-snippet-fold-unfold.css
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magnific-popup.min.css
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font-awesome.min.css
22 ms
avia-snippet-lightbox.css
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avia-snippet-widget.css
1001 ms
enfold_child.css
1102 ms
custom.css
766 ms
style.css
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eventon_styles.css
881 ms
font-awesome.css
782 ms
eventon_dynamic_styles.css
776 ms
el_styles.css
775 ms
frontend.css
786 ms
post-551.css
783 ms
jquery.min.js
976 ms
avia-js.js
792 ms
waypoints.min.js
782 ms
avia.js
922 ms
shortcodes.js
784 ms
contact.js
912 ms
gallery.js
913 ms
gallery_horizontal.js
831 ms
magazine.js
820 ms
isotope.min.js
880 ms
masonry_entries.js
891 ms
numbers.js
885 ms
portfolio.js
888 ms
slideshow.js
807 ms
slideshow-video.js
791 ms
slideshow_fullscreen.js
872 ms
tabs.js
888 ms
video.js
883 ms
frontend.js
806 ms
jquery.tablesorter-min.js
786 ms
general.js
780 ms
lazyload-shared.js
861 ms
lazyload-youtube.js
797 ms
lazyload-vimeo.js
793 ms
avia-snippet-hamburger-menu.js
791 ms
avia-snippet-parallax.js
786 ms
avia-snippet-fold-unfold.js
699 ms
jquery.magnific-popup.min.js
780 ms
avia-snippet-lightbox.js
777 ms
avia-snippet-megamenu.js
779 ms
avia-snippet-sticky-header.js
696 ms
avia-snippet-footer-effects.js
694 ms
avia-snippet-widget.js
692 ms
eventon_functions.js
764 ms
handlebars.js
779 ms
jquery.mobile.min.js
690 ms
jquery.mousewheel.min.js
690 ms
eventon_script.js
677 ms
eventon_init_gmap_blank.js
682 ms
eventon_gen_maps_none.js
635 ms
el_script.js
650 ms
rapp-logo-340pxblau-300x79.png
678 ms
esulab-2024-300x127.png
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sfn2024.png
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barlow-condensed-v1-latin-600.woff
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photomanipulation_overview_2x2-300x213.png
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microscopy_and_imaging_overview_2x2-300x213.png
703 ms
microscope_accessories_overview_2x2-300x213.png
681 ms
illumination_systems_overview_2x2-300x213.png
691 ms
cutting-actin-bundels-in-single-cells-180x180.png
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investigating-dna-repair-pathways-by-local-uv-c-irradiation-180x180.jpg
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flirt_canman_lab_01_preview_small-180x180.jpg
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analyzing-calcium-responses-in-acute-brain-slices-induced-by-uv-uncaging_icon-180x180.png
703 ms
optogenetical-stimulation-in-acute-brain-slices_icon-180x180.png
683 ms
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rapp-opto.com 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-hidden="true"] elements contain focusable descendents
[role]s are not contained by their required parent element
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>).
rapp-opto.com 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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
rapp-opto.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rapp-opto.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Rapp-opto.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.
rapp-opto.com
Open Graph description is not detected on the main page of Rapp Opto. 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: