Tools & Wizards About Us
black-tides.com screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    95% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

black-tides.com

Black tide: oil spill, pollution, sources, impact, response, rehabilitation

Page Load Speed

1.4 sec in total

First Response

272 ms

Resources Loaded

1 sec

Page Rendered

63 ms

black-tides.com screenshot

About Website

Click here to check amazing Black Tide S content. Otherwise, check out these important facts you probably never knew about black-tides.com

Understanding Black Tides presents current knowledge in terms of the behaviour of oil at sea, the response organisation implemented in the event of a spill, available response means as well as the med...

Visit black-tides.com

Key Findings

We analyzed Black-tides.com page load time and found that the first response time was 272 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

black-tides.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.2 s

99/100

10%

Network Requests Diagram

black-tides.com

272 ms

www.black-tides.com

284 ms

defaut.css

96 ms

compatible.js

184 ms

ga.js

7 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 87% of them (13 requests) were addressed to the original Black-tides.com, 13% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (284 ms) belongs to the original domain Black-tides.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 9.9 kB (29%)

Content Size

33.7 kB

After Optimization

23.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Black-tides.com main page is 33.7 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. Only 10% of websites need less resources to load. Javascripts take 18.2 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 3.3 kB

  • Original 5.4 kB
  • After minification 5.3 kB
  • After compression 2.1 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 3.3 kB or 61% of the original size.

Image Optimization

-74%

Potential reduce by 6.2 kB

  • Original 8.3 kB
  • After minification 2.2 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, Black Tide S needs image optimization as it can save up to 6.2 kB or 74% 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 160 B

  • Original 18.2 kB
  • After minification 18.2 kB
  • After compression 18.1 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

-16%

Potential reduce by 282 B

  • Original 1.7 kB
  • After minification 1.7 kB
  • After compression 1.4 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. Black-tides.com needs all CSS files to be minified and compressed as it can save up to 282 B or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (62%)

Requests Now

13

After Optimization

5

  • Images
  • JavaScript
  • CSS

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

Network Requests Diagram

black-tides.com

black-tides.com

272 ms

www.black-tides.com

www.black-tides.com

284 ms

defaut.css

defaut.css

96 ms

compatible.js

compatible.js

184 ms

ga.js

ga.js

7 ms

quizz.png

quizz.png

99 ms

lex.png

lex.png

98 ms

bibli.png

bibli.png

183 ms

plan.png

plan.png

195 ms

contact.png

contact.png

184 ms

credits.png

credits.png

182 ms

telecharger.png

telecharger.png

188 ms

bouton_valider.gif

bouton_valider.gif

190 ms

logo_grand_cedre.png

logo_grand_cedre.png

275 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

black-tides.com accessibility score

60

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<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

High

Form elements do not have associated labels

High

<object> elements do not have alternate text

Best Practices

black-tides.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

SEO Factors

black-tides.com SEO score

58

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

High

Document uses plugins

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    GB

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Black-tides.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed language. Our system also found out that Black-tides.com 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.

Social Sharing Optimization

black-tides.com

Open Graph description is not detected on the main page of Black Tide S. 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: