Tools & Wizards About Us
deepblackhole.com screenshot

Report Summary

  • 0

    Performance

  • 45

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

deepblackhole.com

deep black hole .com by rafaël rozendaal, 2010, collection of sébastien de ganay

Page Load Speed

1.1 sec in total

First Response

152 ms

Resources Loaded

878 ms

Page Rendered

57 ms

deepblackhole.com screenshot

About Website

Click here to check amazing Deep Black Hole content for United States. Otherwise, check out these important facts you probably never knew about deepblackhole.com

DEEP BLACK HOLE .COM BY RAFAEL ROZENDAAL - 2010 - WWW.NEWRAFAEL.COM, COLLECTION OF SEBASTIEN DE GANAY - WWW.SEBASTIENDEGANAY.COM, CODE BY REINIER FEIJEN - WWW.BOXOFCHOCOLATES.NL

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Key Findings

We analyzed Deepblackhole.com page load time and found that the first response time was 152 ms and then it took 935 ms 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

deepblackhole.com performance score

0

Network Requests Diagram

deepblackhole.com

152 ms

deepblackhole.com

293 ms

73 ms

libs.min.js

348 ms

Util.js

210 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that all of those requests were addressed to Deepblackhole.com and no external sources were called. The less responsive or slowest element that took the longest time to load (348 ms) belongs to the original domain Deepblackhole.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 204.3 kB (73%)

Content Size

280.1 kB

After Optimization

75.8 kB

  • HTML
  • JavaScript

In fact, the total size of Deepblackhole.com main page is 280.1 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 276.8 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 2.2 kB

  • Original 3.3 kB
  • After minification 2.3 kB
  • After compression 1.0 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 921 B, which is 28% 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 2.2 kB or 68% of the original size.

JavaScript Optimization

-73%

Potential reduce by 202.0 kB

  • Original 276.8 kB
  • After minification 273.2 kB
  • After compression 74.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 202.0 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (75%)

Requests Now

8

After Optimization

2

  • AJAX
  • JavaScript

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Deep Black Hole. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

deepblackhole.com

deepblackhole.com

152 ms

deepblackhole.com

deepblackhole.com

293 ms

73 ms

libs.min.js

libs.min.js

348 ms

Util.js

Util.js

210 ms

Assets.js

Assets.js

209 ms

Rock.js

Rock.js

212 ms

Tremor.js

Tremor.js

212 ms

Config.js

Config.js

213 ms

Piece.js

Piece.js

347 ms

Accessibility Review

deepblackhole.com accessibility score

45

Accessibility Issues

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

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

deepblackhole.com 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

High

Browser errors were logged to the console

SEO Factors

deepblackhole.com SEO score

92

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Deepblackhole.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Deepblackhole.com 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

deepblackhole.com

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