4.8 sec in total
474 ms
3.9 sec
419 ms
Welcome to techlib.cz homepage info - get ready to check Techlib best content for Czech Republic right away, or after learning these important things about techlib.cz
National Library of Technology
Visit techlib.czWe analyzed Techlib.cz page load time and found that the first response time was 474 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
techlib.cz performance score
name
value
score
weighting
Value6.7 s
2/100
10%
Value11.5 s
0/100
25%
Value15.6 s
0/100
10%
Value140 ms
95/100
30%
Value0.238
52/100
15%
Value26.1 s
0/100
10%
474 ms
359 ms
374 ms
243 ms
231 ms
Our browser made a total of 95 requests to load all elements on the main page. We found that 34% of them (32 requests) were addressed to the original Techlib.cz, 63% (60 requests) were made to Aleph.techlib.cz and 2% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Aleph.techlib.cz.
Page size can be reduced by 114.1 kB (7%)
1.6 MB
1.5 MB
In fact, the total size of Techlib.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. 65% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 59.0 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. 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 59.0 kB or 83% of the original size.
Potential reduce by 55.1 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. Techlib images are well optimized though.
Potential reduce by 27 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.
Number of requests can be reduced by 6 (7%)
84
78
The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Techlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.
techlib.cz
474 ms
www.techlib.cz
359 ms
374 ms
styles.min.css
243 ms
modernizr.min.js
231 ms
jquery.min.js
355 ms
init.js
235 ms
utilities.js
239 ms
librarian.js
345 ms
app.min.js
573 ms
cookieconsent.latest.min.js
349 ms
bg.png
487 ms
bg-orto.png
204 ms
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logo-ntk.png
354 ms
logo-chektk.png
120 ms
sprite.png
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361.jpg
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dobit-financni-konto-platebni-kartou.gif
506 ms
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Roboto-Regular-webfont.woff
967 ms
Roboto-Light-webfont.woff
675 ms
icomoon.woff
554 ms
Roboto-Medium-webfont.woff
917 ms
Univers-45-Light-Bold.ttf
846 ms
3145f7f3-577b-4fc5-b041-fd8a5b0b2d40.woff
782 ms
anick1.jpg
777 ms
grunge_wall.png
962 ms
ntk-pictogram.png
912 ms
glyphicons-halflings-regular.woff
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dc.js
151 ms
__utm.gif
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light-bottom.css
29 ms
techlib.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
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
techlib.cz 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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
techlib.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Page is blocked from indexing
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Document doesn't have a valid hreflang
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 Techlib.cz 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 Techlib.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.
techlib.cz
Open Graph description is not detected on the main page of Techlib. 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: