2.3 sec in total
474 ms
1.6 sec
194 ms
Welcome to ef4.be homepage info - get ready to check Ef 4 best content for Algeria right away, or after learning these important things about ef4.be
Energie Facteur 4 vise à promouvoir l'offre et la demande d'énergie de sources renouvelables, ainsi que l'utilisation rationnelle de l'énergie.
Visit ef4.beWe analyzed Ef4.be page load time and found that the first response time was 474 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
ef4.be performance score
name
value
score
weighting
Value3.8 s
26/100
10%
Value6.6 s
8/100
25%
Value6.9 s
33/100
10%
Value850 ms
34/100
30%
Value0.065
97/100
15%
Value6.8 s
55/100
10%
474 ms
334 ms
163 ms
177 ms
255 ms
Our browser made a total of 64 requests to load all elements on the main page. We found that 89% of them (57 requests) were addressed to the original Ef4.be, 8% (5 requests) were made to Cdn2.artwhere.net and 3% (2 requests) were made to Cdn.artwhere.net. The less responsive or slowest element that took the longest time to load (720 ms) belongs to the original domain Ef4.be.
Page size can be reduced by 27.3 kB (13%)
218.3 kB
191.0 kB
In fact, the total size of Ef4.be main page is 218.3 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. 25% of websites need less resources to load. Images take 170.9 kB which makes up the majority of the site volume.
Potential reduce by 25.9 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. 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 25.9 kB or 55% of the original size.
Potential reduce by 1.4 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. Ef 4 images are well optimized though.
Number of requests can be reduced by 38 (60%)
63
25
The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ef 4. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
ef4.be
474 ms
prototype.js
334 ms
scriptaculous.js
163 ms
init.js
177 ms
lightbox.js
255 ms
lightbox.css
177 ms
def.js
243 ms
popup.css
249 ms
flashobject.js
257 ms
editor.css
262 ms
styles.css
343 ms
scripts.js
343 ms
pre_admin_scripts.js
182 ms
builder.js
91 ms
effects.js
169 ms
popup-top.png
97 ms
logo.jpg
95 ms
tiny_loading.gif
94 ms
back-banner.gif
86 ms
logo.gif
83 ms
banner-01.jpg
83 ms
banner-02.jpg
161 ms
banner-03.jpg
83 ms
banner-04.jpg
88 ms
ttf.php
166 ms
search.gif
162 ms
back-menu.gif
164 ms
ttf.php
168 ms
ttf.php
176 ms
ttf.php
242 ms
ttf.php
242 ms
ttf.php
348 ms
back-main.gif
242 ms
ico-home.gif
248 ms
ico-mail.gif
260 ms
ico-send.gif
317 ms
ico-map.gif
320 ms
ico-print.gif
322 ms
ico-docs.gif
331 ms
blck-titre-left.gif
353 ms
blck-txt-left.gif
397 ms
blck-bottom-left.gif
410 ms
pac_database_179.png
417 ms
newsletter-fr.gif
416 ms
pvdatabase.gif
422 ms
1.jpg
522 ms
colors.gif
475 ms
admin_lock.gif
489 ms
0.jpg
486 ms
2.jpg
563 ms
3.jpg
607 ms
4.jpg
701 ms
5.jpg
720 ms
6.jpg
651 ms
_l.gif
87 ms
_prev.gif
54 ms
_next.gif
53 ms
_r.gif
87 ms
7.jpg
549 ms
underline-title.gif
584 ms
bt2.gif
627 ms
blck-home.gif
637 ms
puce.gif
670 ms
back-bottom.gif
600 ms
ef4.be 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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
ef4.be 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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
ef4.be 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
N/A
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ef4.be can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Ef4.be main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
ef4.be
Open Graph description is not detected on the main page of Ef 4. 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: