2.4 sec in total
277 ms
2 sec
162 ms
Welcome to levenhuk.cz homepage info - get ready to check Levenhuk best content for Czech Republic right away, or after learning these important things about levenhuk.cz
Oficiální webové stránky Levenhuk pro Českou republiku. Nízké ceny a bonusy. Rychlé doručení. Služby zákazníkům. Vysoce kvalitní výrobky.
Visit levenhuk.czWe analyzed Levenhuk.cz page load time and found that the first response time was 277 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
levenhuk.cz performance score
name
value
score
weighting
Value4.9 s
10/100
10%
Value13.4 s
0/100
25%
Value16.9 s
0/100
10%
Value2,990 ms
3/100
30%
Value0.078
95/100
15%
Value19.5 s
2/100
10%
277 ms
346 ms
318 ms
325 ms
366 ms
Our browser made a total of 102 requests to load all elements on the main page. We found that 7% of them (7 requests) were addressed to the original Levenhuk.cz, 79% (81 requests) were made to Cdn.levenhuk.com and 3% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (468 ms) relates to the external source Cdn.levenhuk.com.
Page size can be reduced by 671.8 kB (28%)
2.4 MB
1.7 MB
In fact, the total size of Levenhuk.cz main page is 2.4 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. 50% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.
Potential reduce by 86.4 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 86.4 kB or 79% of the original size.
Potential reduce by 183.3 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. Obviously, Levenhuk needs image optimization as it can save up to 183.3 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 243.7 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 243.7 kB or 68% of the original size.
Potential reduce by 158.4 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. Levenhuk.cz needs all CSS files to be minified and compressed as it can save up to 158.4 kB or 84% of the original size.
Number of requests can be reduced by 39 (40%)
97
58
The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Levenhuk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
levenhuk.cz
277 ms
www.levenhuk.cz
346 ms
common_styles.css
318 ms
js-image-slider.css
325 ms
style.css
366 ms
jquery.fancybox.css
331 ms
tabulous.css
331 ms
jquery-1.8.2.min.js
372 ms
cycle2.js
346 ms
cycle2.carousel.js
352 ms
js-image-slider.css
84 ms
js-image-slider.js
369 ms
slider.css
369 ms
jquery-slider.js
390 ms
carou-style.css
389 ms
jquery.mousewheel.js
392 ms
jquery.contentcarousel.js
392 ms
pinit.js
6 ms
chktext.js
392 ms
chkmail.js
398 ms
jquery.transit.min.js
413 ms
easing.js
425 ms
jquery.ddslick.min.js
429 ms
jquery.fancybox.pack.js
242 ms
avmws_1012003.js
429 ms
awstats_misc_tracker.js
429 ms
ernte-block.gif
87 ms
arrow-flags.png
82 ms
flag04.png
82 ms
flag07.png
83 ms
flag06.png
84 ms
nl.png
84 ms
bel.gif
85 ms
flag01.png
90 ms
de.jpg
99 ms
flag03.png
111 ms
flag02.png
116 ms
by.png
114 ms
flag05.png
117 ms
uk.jpg
125 ms
ee.jpg
132 ms
lv.gif
146 ms
lt.gif
149 ms
sk.jpg
162 ms
es.jpg
162 ms
iceland.png
164 ms
india.gif
174 ms
tu.jpg
180 ms
logo.png
181 ms
tell-ico.png
182 ms
hr-left-menu.png
42 ms
banner_micro_rainbow_new_626x319_cz.jpg
314 ms
guide_626x319_CZ.png
259 ms
lvh_atom+rainbow_banners_cz1.png
292 ms
lvh_atom+rainbow_banners_cz.png
349 ms
dtx-cz.png
341 ms
slider-1.jpg
307 ms
slider-2.jpg
366 ms
loading.gif
141 ms
slider-3.jpg
361 ms
bino-levenhuk-energy-plus-8x32.jpg
312 ms
24601_3_.jpg
308 ms
levenhuk-strike-90-plus.jpg
337 ms
telescope-levenhuk-strike-100-plus.jpg
340 ms
awstats_misc_tracker.js
120 ms
telescope-levenhuk-strike-120-plus.jpg
314 ms
camera-for-telescopes-levenhuk-t130-ng.jpg
468 ms
levenhuk-microscope-dtx-500-mobi.jpg
342 ms
bino-levenhuk-monaco-10x25.jpg
340 ms
levenhuk_rainbow_50L_NG_rose_.jpg
343 ms
telescope-levenhuk-skyline-60x700az.jpg
344 ms
pinit_main.js
65 ms
gopay_logo.png
354 ms
fd-ico.png
368 ms
gp-ico.png
360 ms
tv-ico.png
349 ms
mail-ico.png
346 ms
cart.png
357 ms
menu-bg-razd.png
373 ms
main_zoom_icon.jpg
41 ms
left-menu-top-bg.png
365 ms
left-menu-bg.png
350 ms
left-menu-bottom-bg.png
338 ms
left-menu-title-block.png
345 ms
loading.gif
361 ms
prod-cart02.png
366 ms
buy-now-cz-120x29.png
360 ms
footer-links-sprite.jpg
359 ms
arrow-slide-left.png
360 ms
gtm.js
48 ms
bullet.png
83 ms
conversion_async.js
16 ms
analytics.js
4 ms
retargeting.js
331 ms
linkid.js
4 ms
collect
5 ms
collect
75 ms
38 ms
59 ms
52 ms
34 ms
ga-audiences
24 ms
levenhuk.cz accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
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 valid value for its [lang] attribute.
levenhuk.cz 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
Detected JavaScript libraries
levenhuk.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 uses legible font sizes
Tap targets are not sized appropriately
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Levenhuk.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech 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 Levenhuk.cz 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.
levenhuk.cz
Open Graph description is not detected on the main page of Levenhuk. 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: