Tools & Wizards About Us
delfindivers.de screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

delfindivers.de

Startseite

Page Load Speed

4.7 sec in total

First Response

370 ms

Resources Loaded

3.9 sec

Page Rendered

384 ms

delfindivers.de screenshot

About Website

Welcome to delfindivers.de homepage info - get ready to check Delfindivers best content right away, or after learning these important things about delfindivers.de

Fast 20 Jahre Tauchsport Erfahrung zahlen sich für Sie aus. Tauchausbildung nach PADI und NRC, Ausrüstungsverkauf und Verleih. Regelmäßige Tauchausfahrten und Gruppenreisen, aber auch Reisen für Nicht...

Visit delfindivers.de

Key Findings

We analyzed Delfindivers.de page load time and found that the first response time was 370 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 70% of websites can load faster.

Performance Metrics

delfindivers.de performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.145

77/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

Network Requests Diagram

delfindivers.de

370 ms

www.delfindivers.com

695 ms

nivo-slider.css

115 ms

default.css

213 ms

mootools-core.js

370 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Delfindivers.de, 83% (30 requests) were made to Delfindivers.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Delfindivers.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 178.3 kB (6%)

Content Size

2.9 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Delfindivers.de main page is 2.9 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. 40% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 26.3 kB

  • Original 35.9 kB
  • After minification 34.5 kB
  • After compression 9.7 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 26.3 kB or 73% of the original size.

Image Optimization

-5%

Potential reduce by 149.6 kB

  • Original 2.8 MB
  • After minification 2.6 MB

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. Delfindivers images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 1.2 kB

  • Original 86.7 kB
  • After minification 86.7 kB
  • After compression 85.5 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

-23%

Potential reduce by 1.2 kB

  • Original 5.4 kB
  • After minification 5.4 kB
  • After compression 4.2 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. Delfindivers.de needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (21%)

Requests Now

34

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Delfindivers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

delfindivers.de

delfindivers.de

370 ms

www.delfindivers.com

www.delfindivers.com

695 ms

nivo-slider.css

nivo-slider.css

115 ms

default.css

default.css

213 ms

mootools-core.js

mootools-core.js

370 ms

core.js

core.js

220 ms

caption.js

caption.js

266 ms

jquery.min.js

jquery.min.js

387 ms

jquery.nivo.slider.min.js

jquery.nivo.slider.min.js

268 ms

styles.css

styles.css

321 ms

ga.js

ga.js

11 ms

bg.png

bg.png

116 ms

logo.png

logo.png

315 ms

3311Cold_Water_Banner_2010_s.jpg

3311Cold_Water_Banner_2010_s.jpg

2036 ms

NOVA%20Neu.2jpg.jpg

NOVA%20Neu.2jpg.jpg

325 ms

PDSLogohorz4CblkType-e1457738513741.jpg

PDSLogohorz4CblkType-e1457738513741.jpg

210 ms

startslider1.jpg

startslider1.jpg

115 ms

manometer-mares-mr1-schwarz.jpeg

manometer-mares-mr1-schwarz.jpeg

441 ms

Unbenannt.jpg

Unbenannt.jpg

549 ms

Bild.jpg

Bild.jpg

319 ms

padi5star.png

padi5star.png

524 ms

Spanien%202006%20036.jpg

Spanien%202006%20036.jpg

940 ms

Facebook.jpg

Facebook.jpg

434 ms

banner.png

banner.png

647 ms

loading.gif

loading.gif

546 ms

__utm.gif

__utm.gif

27 ms

all.js

all.js

28 ms

sideback.png

sideback.png

563 ms

dark.gif

dark.gif

590 ms

sidebar.png

sidebar.png

597 ms

main-bot.png

main-bot.png

671 ms

all.js

all.js

5 ms

47 ms

www.delfindivers.com

www.delfindivers.com

395 ms

arrows.png

arrows.png

122 ms

bullets.png

bullets.png

125 ms

Accessibility Review

delfindivers.de accessibility score

65

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

delfindivers.de 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

delfindivers.de SEO score

62

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

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

delfindivers.de

Open Graph description is not detected on the main page of Delfindivers. 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: