6.1 sec in total
316 ms
5.6 sec
230 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 316 ms and then it took 5.8 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
Value3.3 s
40/100
10%
Value3.4 s
65/100
25%
Value5.5 s
55/100
10%
Value130 ms
96/100
30%
Value0.01
100/100
15%
Value4.9 s
78/100
10%
316 ms
3221 ms
314 ms
317 ms
321 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 98% of them (55 requests) were addressed to the original Rapp-opto.com, 2% (1 request) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Rapp-opto.com.
Page size can be reduced by 949.0 kB (54%)
1.8 MB
801.4 kB
In fact, the total size of Rapp-opto.com main page is 1.8 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. CSS take 710.3 kB which makes up the majority of the site volume.
Potential reduce by 111.5 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 111.5 kB or 85% of the original size.
Potential reduce by 4.4 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 231.5 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 231.5 kB or 74% of the original size.
Potential reduce by 601.5 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 601.5 kB or 85% of the original size.
Number of requests can be reduced by 31 (62%)
50
19
The browser has sent 50 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 19 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
rapp-opto.com
316 ms
rapp-opto.com
3221 ms
style.min.css
314 ms
delightful-downloads.min.css
317 ms
general.css
321 ms
lazyload-shared.css
320 ms
mediaelementplayer-legacy.min.css
321 ms
wp-mediaelement.min.css
318 ms
eventon_styles.css
518 ms
font-awesome.css
526 ms
eventon_dynamic_styles.css
425 ms
el_styles.css
426 ms
font-awesome.min.css
66 ms
frontend.css
428 ms
avia-merged-styles-05c1b037ea5b69553c769cf640773191---628b65a281e5e.css
1248 ms
post-551.css
530 ms
jquery.min.js
735 ms
frontend.js
525 ms
jquery.tablesorter-min.js
608 ms
general.js
616 ms
lazyload-shared.js
619 ms
lazyload-youtube.js
628 ms
lazyload-vimeo.js
715 ms
mediaelement-and-player.min.js
924 ms
mediaelement-migrate.min.js
723 ms
wp-mediaelement.min.js
731 ms
eventon_functions.js
819 ms
handlebars.js
923 ms
jquery.mobile.min.js
828 ms
jquery.mousewheel.min.js
835 ms
eventon_script.js
923 ms
eventon_init_gmap_blank.js
934 ms
eventon_gen_maps_none.js
947 ms
el_script.js
1031 ms
avia-footer-scripts-3f6369fa68b9b2374409da2b3fe4ae6c---628b65a335d48.js
1301 ms
rapp-optoelectronic-logo.png
122 ms
events-rapp-optoelectronic.jpg
122 ms
9-300x169.jpg
249 ms
photomanipulation_overview_2x2-300x213.png
122 ms
microscopy_and_imaging_overview_2x2-300x213.png
122 ms
microscope_accessories_overview_2x2-300x213.png
248 ms
illumination_systems_overview_2x2-300x213.png
250 ms
cutting-actin-bundels-in-single-cells-180x180.png
249 ms
investigating-dna-repair-pathways-by-local-uv-c-irradiation-180x180.jpg
248 ms
flirt_canman_lab_01_preview_small-180x180.jpg
249 ms
analyzing-calcium-responses-in-acute-brain-slices-induced-by-uv-uncaging_icon-180x180.png
318 ms
optogenetical-stimulation-in-acute-brain-slices_icon-180x180.png
320 ms
kuepper-frap-icon-180x180.png
335 ms
photoconversion-of-meos2_thorn_icon-180x180.png
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barlow-condensed-v1-latin-600.woff
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barlow-condensed-v1-latin-regular.woff
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entypo-fontello.woff
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parallax_bg2-1030x315.png
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microscope.png
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bild1.png
211 ms
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
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
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.
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
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: