9 sec in total
590 ms
8.2 sec
202 ms
Click here to check amazing Jewishhistory content. Otherwise, check out these important facts you probably never knew about jewishhistory.cz
Visit jewishhistory.czWe analyzed Jewishhistory.cz page load time and found that the first response time was 590 ms and then it took 8.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.
jewishhistory.cz performance score
name
value
score
weighting
Value1.6 s
93/100
10%
Value1.6 s
99/100
25%
Value1.9 s
100/100
10%
Value0 ms
100/100
30%
Value0.032
100/100
15%
Value1.6 s
100/100
10%
590 ms
637 ms
4 ms
26 ms
37 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 76% of them (31 requests) were addressed to the original Jewishhistory.cz, 15% (6 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Netdna.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (6.6 sec) belongs to the original domain Jewishhistory.cz.
Page size can be reduced by 287.7 kB (18%)
1.6 MB
1.4 MB
In fact, the total size of Jewishhistory.cz main page is 1.6 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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 11.3 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 11.3 kB or 70% of the original size.
Potential reduce by 47.5 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. Jewishhistory images are well optimized though.
Potential reduce by 196.7 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 196.7 kB or 67% of the original size.
Potential reduce by 32.3 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. Jewishhistory.cz needs all CSS files to be minified and compressed as it can save up to 32.3 kB or 79% of the original size.
Number of requests can be reduced by 16 (48%)
33
17
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jewishhistory. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
www.jewishhistory.cz
590 ms
style.css
637 ms
font-awesome.css
4 ms
css
26 ms
css
37 ms
styles.css
98 ms
jquery.fancybox-1.3.7.min.css
175 ms
jquery.js
432 ms
jquery-migrate.min.js
181 ms
jquery.js
457 ms
scripts.js
194 ms
responsiveslides.js
260 ms
responsiveslides.css
270 ms
jquery.form.min.js
290 ms
scripts.js
346 ms
wp-embed.min.js
359 ms
jquery.fancybox-1.3.7.min.js
387 ms
jquery.mousewheel.min.js
431 ms
wp-emoji-release.min.js
194 ms
bg.png
92 ms
grad.png
96 ms
sipkahome.png
99 ms
bildvorlage-variante-1.jpeg
435 ms
varianta3.jpg
359 ms
DSC_0005-7.jpg
6558 ms
obalka.png
226 ms
sipkanews.png
227 ms
dopo.png
257 ms
usd.png
263 ms
zm.png
276 ms
mua.png
355 ms
ajax-loader.gif
289 ms
slideleft.png
307 ms
slideright.png
374 ms
Wreg0Be4tcFGM2t6VWytvKp5NA6AAOjfQM_HmvD0shQ.ttf
16 ms
HQXBIwLHsOJCNEQeX9kNz9qQynqKV_9Plp7mupa0S4g.ttf
20 ms
lJAvZoKA5NttpPc9yc6lPbOLyRJkM5aLlPlkJMOAyH0.ttf
78 ms
fVu1p3782bqS2z-CaJvp9i3USBnSvpkopQaUR-2r7iU.ttf
32 ms
erE3KsIWUumgD1j_Ca-V-6CWcynf_cDxXwCLxiixG1c.ttf
31 ms
PIbvSEyHEdL91QLOQRnZ19qQynqKV_9Plp7mupa0S4g.ttf
30 ms
fontawesome-webfont.woff
7 ms
jewishhistory.cz 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
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
jewishhistory.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
jewishhistory.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
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
EN
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jewishhistory.cz 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 Czech language. Our system also found out that Jewishhistory.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.
jewishhistory.cz
Open Graph description is not detected on the main page of Jewishhistory. 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: