Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

7oceans.de

7oceans Gmbh - Tauchschule, Tauchshop, Werkstatt, Reisen

Page Load Speed

3.8 sec in total

First Response

317 ms

Resources Loaded

3.3 sec

Page Rendered

185 ms

7oceans.de screenshot

About Website

Click here to check amazing 7 Oceans content. Otherwise, check out these important facts you probably never knew about 7oceans.de

Erlebe die Faszination Wassersport mit Action-Sport 7oceans. In unserem zwei­ geschossigen Service-Store in Hamburg ­ Eimsbüttel bieten wir dir seit über 25 Jahren alles rund um Tauchausbildung und Au...

Visit 7oceans.de

Key Findings

We analyzed 7oceans.de page load time and found that the first response time was 317 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

7oceans.de performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.502

16/100

15%

TTI (Time to Interactive)

Value22.0 s

1/100

10%

Network Requests Diagram

7oceans.de

317 ms

7oceans.de

392 ms

home

629 ms

app.css

185 ms

jquery.dataTables.min.css

63 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 23% of them (14 requests) were addressed to the original 7oceans.de, 38% (23 requests) were made to Actioncms.s3.eu-central-1.amazonaws.com and 5% (3 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Actioncms.s3.eu-central-1.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (25%)

Content Size

5.6 MB

After Optimization

4.2 MB

In fact, the total size of 7oceans.de main page is 5.6 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. 70% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-99%

Potential reduce by 1.2 MB

  • Original 1.3 MB
  • After minification 57.1 kB
  • After compression 12.4 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 1.2 MB, which is 95% 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 1.2 MB or 99% of the original size.

Image Optimization

-3%

Potential reduce by 113.8 kB

  • Original 4.1 MB
  • After minification 4.0 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. 7 Oceans images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 454 B

  • Original 147.2 kB
  • After minification 147.2 kB
  • After compression 146.7 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

-5%

Potential reduce by 2.2 kB

  • Original 46.4 kB
  • After minification 46.4 kB
  • After compression 44.2 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. 7oceans.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 21 (40%)

Requests Now

53

After Optimization

32

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 7 Oceans. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

7oceans.de accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

7oceans.de best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

7oceans.de SEO score

81

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

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 7oceans.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 7oceans.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

Open Graph description is not detected on the main page of 7 Oceans. 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: