Tools & Wizards About Us
certified-senders.org screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

certified-senders.org

Main Page - Certified Senders Alliance : Certified Senders Alliance

Page Load Speed

3.1 sec in total

First Response

212 ms

Resources Loaded

2.6 sec

Page Rendered

274 ms

certified-senders.org screenshot

About Website

Visit certified-senders.org now to see the best up-to-date Certified Senders content for Germany and also check out these interesting facts you probably never knew about certified-senders.org

The CSA acts as a neutral interface between mailbox providers and senders of commercial emails. The goal is to improve the quality of commercial emails, such as newsletters, invoices and order confirm...

Visit certified-senders.org

Key Findings

We analyzed Certified-senders.org page load time and found that the first response time was 212 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

certified-senders.org performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value7,730 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.583

11/100

15%

TTI (Time to Interactive)

Value20.4 s

2/100

10%

Network Requests Diagram

certified-senders.org

212 ms

certified-senders.org

1046 ms

font-awesome.min.css

26 ms

style.css

207 ms

style.min.css

400 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 98% of them (59 requests) were addressed to the original Certified-senders.org, 2% (1 request) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Certified-senders.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 212.4 kB (34%)

Content Size

632.6 kB

After Optimization

420.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Certified-senders.org main page is 632.6 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. 40% of websites need less resources to load. Images take 327.6 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 102.1 kB

  • Original 122.4 kB
  • After minification 117.7 kB
  • After compression 20.2 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 102.1 kB or 83% of the original size.

Image Optimization

-32%

Potential reduce by 104.1 kB

  • Original 327.6 kB
  • After minification 223.4 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. Obviously, Certified Senders needs image optimization as it can save up to 104.1 kB or 32% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 827 B

  • Original 115.3 kB
  • After minification 115.3 kB
  • After compression 114.5 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.

CSS Optimization

-8%

Potential reduce by 5.3 kB

  • Original 67.4 kB
  • After minification 67.4 kB
  • After compression 62.0 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. Certified-senders.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 35 (67%)

Requests Now

52

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Certified Senders. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

certified-senders.org

certified-senders.org

212 ms

certified-senders.org

certified-senders.org

1046 ms

font-awesome.min.css

font-awesome.min.css

26 ms

style.css

style.css

207 ms

style.min.css

style.min.css

400 ms

styles.css

styles.css

310 ms

front-flex.min.css

front-flex.min.css

313 ms

style.min.css

style.min.css

314 ms

screen.css

screen.css

423 ms

borlabs-cookie_1_en.css

borlabs-cookie_1_en.css

315 ms

style.css

style.css

414 ms

jquery.min.js

jquery.min.js

523 ms

jquery-migrate.min.js

jquery-migrate.min.js

417 ms

bootstrap.min.js

bootstrap.min.js

331 ms

flexslider.css

flexslider.css

397 ms

public.css

public.css

416 ms

sow-headline-default-7746819de07c-195.css

sow-headline-default-7746819de07c-195.css

420 ms

sow-features-default-b5829d7f1fb3-195.css

sow-features-default-b5829d7f1fb3-195.css

469 ms

style.css

style.css

469 ms

style.css

style.css

518 ms

sow-button-wire-780cc792fb57-195.css

sow-button-wire-780cc792fb57-195.css

534 ms

style.css

style.css

534 ms

sow-features-default-71f7f11ae20c-195.css

sow-features-default-71f7f11ae20c-195.css

534 ms

style.css

style.css

534 ms

index.js

index.js

539 ms

index.js

index.js

596 ms

bootstrap.min.js

bootstrap.min.js

625 ms

dropdown.js

dropdown.js

628 ms

main.js

main.js

629 ms

scripts.js

scripts.js

634 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

632 ms

script.min.js

script.min.js

694 ms

borlabs-cookie.min.js

borlabs-cookie.min.js

730 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

731 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

732 ms

wp-polyfill.min.js

wp-polyfill.min.js

738 ms

hooks.min.js

hooks.min.js

737 ms

hcaptcha.js

hcaptcha.js

794 ms

hcaptcha-cf7.min.js

hcaptcha-cf7.min.js

833 ms

csa-logo.svg

csa-logo.svg

492 ms

csa-logo-mobil.svg

csa-logo-mobil.svg

413 ms

email_icon_csa.svg

email_icon_csa.svg

415 ms

newspaper_icon.svg

newspaper_icon.svg

416 ms

Whitepaper_grafik-scaled-1170x390.jpg

Whitepaper_grafik-scaled-1170x390.jpg

447 ms

Blog-1137x379.png

Blog-1137x379.png

697 ms

Email-Marketing-Directive-Header-images--1140x379.jpg

Email-Marketing-Directive-Header-images--1140x379.jpg

594 ms

cb-no-thumbnail.png

cb-no-thumbnail.png

499 ms

marcelbecker1-1024x1024-1-300x300.png

marcelbecker1-1024x1024-1-300x300.png

602 ms

Gmail-Error-Codes-1.png

Gmail-Error-Codes-1.png

545 ms

Sender-Requirements1.png

Sender-Requirements1.png

596 ms

Warenkorbabbrecher.jpg

Warenkorbabbrecher.jpg

601 ms

linkedin_icon_csa.svg

linkedin_icon_csa.svg

644 ms

AvenirNextW1G-Regular.woff

AvenirNextW1G-Regular.woff

780 ms

AvenirNextW1G-Medium.woff

AvenirNextW1G-Medium.woff

772 ms

contact-section-background.jpg

contact-section-background.jpg

781 ms

hcaptcha-div-logo.svg

hcaptcha-div-logo.svg

622 ms

feature-background.woff

feature-background.woff

653 ms

ionicons.ttf

ionicons.ttf

803 ms

fa-solid-900.woff

fa-solid-900.woff

813 ms

fa-regular-400.woff

fa-regular-400.woff

743 ms

Accessibility Review

certified-senders.org accessibility score

93

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

certified-senders.org best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

certified-senders.org SEO score

91

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Certified-senders.org 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 Certified-senders.org 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

certified-senders.org

Open Graph data is detected on the main page of Certified Senders. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: