4.1 sec in total
365 ms
3.4 sec
316 ms
Welcome to seo-trefa.cz homepage info - get ready to check SEO Trefa best content for Czech Republic right away, or after learning these important things about seo-trefa.cz
SEO - optimalizace pro vyhledávače i pro Vás Zvyšte dlouhodobě návštěvnost svého webu díky kvalitní optimalizaci pro vyhledávače a vyšším pozicím ve
Visit seo-trefa.czWe analyzed Seo-trefa.cz page load time and found that the first response time was 365 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
seo-trefa.cz performance score
name
value
score
weighting
Value3.4 s
36/100
10%
Value4.6 s
35/100
25%
Value7.3 s
29/100
10%
Value190 ms
90/100
30%
Value0.335
34/100
15%
Value5.1 s
75/100
10%
365 ms
1218 ms
258 ms
260 ms
260 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 92% of them (47 requests) were addressed to the original Seo-trefa.cz, 4% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Seo-trefa.cz.
Page size can be reduced by 277.4 kB (51%)
541.5 kB
264.1 kB
In fact, the total size of Seo-trefa.cz main page is 541.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Images take 196.8 kB which makes up the majority of the site volume.
Potential reduce by 48.9 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. This page needs HTML code to be minified as it can gain 11.8 kB, which is 19% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 48.9 kB or 80% of the original size.
Potential reduce by 17.9 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. SEO Trefa images are well optimized though.
Potential reduce by 103.2 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 103.2 kB or 64% of the original size.
Potential reduce by 107.4 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. Seo-trefa.cz needs all CSS files to be minified and compressed as it can save up to 107.4 kB or 87% of the original size.
Number of requests can be reduced by 20 (42%)
48
28
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SEO Trefa. 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 11 to 1 for CSS and as a result speed up the page load time.
seo-trefa.cz
365 ms
www.seo-trefa.cz
1218 ms
jcemediabox.css
258 ms
style.css
260 ms
modal.css
260 ms
k2.css
527 ms
style.portal.mode.3.css
299 ms
mediaobject.js
358 ms
jcemediabox.js
625 ms
default.js
391 ms
twitter.js
389 ms
mootools.js
803 ms
modal.js
488 ms
k2.js
530 ms
engine.portal.mode.3.js
548 ms
wp-styles.css
618 ms
AC_OETags.js
662 ms
reset.css
152 ms
grid.css
135 ms
general.css
253 ms
moduly.css
285 ms
template.css
136 ms
ga.js
12 ms
pozadi-body-2.jpg
364 ms
k2.items.cache.500a44935c8320008f1c713a63e32b8e_Lnsp_204.jpg
384 ms
k2.items.cache.47b9371a5ec847a6416d19e09506ac86_Lnsp_204.jpg
267 ms
k2.items.cache.e9ad9fee9d0bc73e0b2c055eb0b268ce_Lnsp_204.jpg
273 ms
k2.items.cache.d722f2a14a84b7ad8053262f61a6106b_Lnsp_204.jpg
275 ms
k2.items.cache.7a6fe08027b80ee08bda1ed60d73e334_Lnsp_204.jpg
289 ms
banner-seo-620x110.jpg
540 ms
500a44935c8320008f1c713a63e32b8e_M.jpg
410 ms
banner-seo-718x110.jpg
532 ms
all.js
84 ms
pozadi-body.jpg
420 ms
pozadi-hlavicka.jpg
725 ms
pozadi-menu.png
513 ms
menu-vybrane.png
570 ms
-menu.png
552 ms
__utm.gif
31 ms
dulezite-small.png
606 ms
ico-neprehlednete.png
614 ms
nsp_portal_mode_3_interface.png
639 ms
date.png
620 ms
stitek.png
651 ms
cely-clanek.png
721 ms
odrazka-submenu1.png
724 ms
ico-aktualita.png
751 ms
ico-rychly-kontakt.png
754 ms
ico-dle-stitku.png
785 ms
pozadi-paticka-copyright.png
784 ms
dot.asp
216 ms
seo-trefa.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.
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 IDs are not unique
seo-trefa.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
seo-trefa.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Seo-trefa.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Seo-trefa.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.
seo-trefa.cz
Open Graph description is not detected on the main page of SEO Trefa. 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: