Tools & Wizards About Us
cder.dz screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

cder.dz

Centre de Développement des Enеrgiеs Rеnouvе

Page Load Speed

3 sec in total

First Response

338 ms

Resources Loaded

2.4 sec

Page Rendered

288 ms

cder.dz screenshot

About Website

Click here to check amazing C De R content for Algeria. Otherwise, check out these important facts you probably never knew about cder.dz

Le CDER est un Centre de Recherche dans le domaine des Energies Renouvelables en Algérie

Visit cder.dz

Key Findings

We analyzed Cder.dz page load time and found that the first response time was 338 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cder.dz performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value7.8 s

3/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.201

62/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

cder.dz

338 ms

www.cder.dz

785 ms

layout.css

118 ms

jquery-1.4.1.min.js

353 ms

jquery-slidedeck.pack.lite.js

345 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 88% of them (42 requests) were addressed to the original Cder.dz, 4% (2 requests) were made to Googletagmanager.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (795 ms) belongs to the original domain Cder.dz.

Page Optimization Overview & Recommendations

Page size can be reduced by 20.9 kB (45%)

Content Size

46.8 kB

After Optimization

25.9 kB

  • HTML
  • JavaScript

In fact, the total size of Cder.dz main page is 46.8 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. 45% of websites need less resources to load. HTML takes 25.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 20.8 kB

  • Original 25.8 kB
  • After minification 23.9 kB
  • After compression 4.9 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 20.8 kB or 81% of the original size.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 10 (22%)

Requests Now

46

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C De R. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cder.dz

cder.dz

338 ms

www.cder.dz

www.cder.dz

785 ms

layout.css

layout.css

118 ms

jquery-1.4.1.min.js

jquery-1.4.1.min.js

353 ms

jquery-slidedeck.pack.lite.js

jquery-slidedeck.pack.lite.js

345 ms

js

js

57 ms

navi.css

navi.css

222 ms

forms.css

forms.css

334 ms

tables.css

tables.css

337 ms

homepage.css

homepage.css

338 ms

gallery.css

gallery.css

338 ms

featured_slide.css

featured_slide.css

338 ms

cder_logo.png

cder_logo.png

118 ms

form_input_long.gif

form_input_long.gif

117 ms

featured_slide_bg.gif

featured_slide_bg.gif

116 ms

100.0.JPG

100.0.JPG

335 ms

100.1.JPG

100.1.JPG

347 ms

100.2.JPG

100.2.JPG

350 ms

100.3.JPG

100.3.JPG

236 ms

100.4.JPG

100.4.JPG

448 ms

100.5.jpg

100.5.jpg

346 ms

9c0b1b08e7b66704c5c9c6f353a9dd2c.png

9c0b1b08e7b66704c5c9c6f353a9dd2c.png

451 ms

20d8e50da3e5d188c3ae7e3d5c84c013.png

20d8e50da3e5d188c3ae7e3d5c84c013.png

449 ms

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ff2b7b0d405af3155bfade52531d96aa.png

461 ms

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bc5e7e37375fea9280060f606f3fba92.png

461 ms

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04632977dcb80c13f133a3cf5ff227bc.png

463 ms

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301e092e482977e4697d9ccaaee086a8.png

562 ms

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71c6c2971a21e28599f94d730ed9a86e.png

565 ms

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1730f04c5d57660d78437ef1ae992f2c.png

567 ms

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12b53d4fb187025e27433c55fefb16ce.png

573 ms

ed276743ddc023efcbd7d8b97e2514ba.png

ed276743ddc023efcbd7d8b97e2514ba.png

577 ms

22d1b003910eb7eca691dd8759db6ec7.jpg

22d1b003910eb7eca691dd8759db6ec7.jpg

575 ms

c4a90cc6f7da3a37cacf52be2b0d59bb.jpg

c4a90cc6f7da3a37cacf52be2b0d59bb.jpg

675 ms

9ccf79aa017b667d622be6eb8143d688.jpg

9ccf79aa017b667d622be6eb8143d688.jpg

676 ms

12161b9aa920492c97e2c6ef8be80f77.jpg

12161b9aa920492c97e2c6ef8be80f77.jpg

678 ms

6d83e2ddeab129a0f736e91a1f806dfb.jpg

6d83e2ddeab129a0f736e91a1f806dfb.jpg

683 ms

c70ad9d572ecfd63147e173141d4ca8c.png

c70ad9d572ecfd63147e173141d4ca8c.png

688 ms

udes.png

udes.png

689 ms

uraer.png

uraer.png

786 ms

urerms.png

urerms.png

786 ms

er2.png

er2.png

788 ms

footer_bg.gif

footer_bg.gif

795 ms

pro.gif

pro.gif

721 ms

js

js

52 ms

analytics.js

analytics.js

19 ms

collect

collect

79 ms

collect

collect

31 ms

ga-audiences

ga-audiences

31 ms

Accessibility Review

cder.dz accessibility score

92

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

High

Links do not have a discernible name

Best Practices

cder.dz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cder.dz SEO score

69

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cder.dz can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Cder.dz 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.

Social Sharing Optimization

cder.dz

Open Graph description is not detected on the main page of C De R. 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: