Tools & Wizards About Us
blackdown.org screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

blackdown.org

Blackdown - Technology Tutorials, Reviews and News

Page Load Speed

1.6 sec in total

First Response

192 ms

Resources Loaded

1.1 sec

Page Rendered

303 ms

blackdown.org screenshot

About Website

Welcome to blackdown.org homepage info - get ready to check Blackdown best content for United States right away, or after learning these important things about blackdown.org

Learn how to customize your linux distros through tutorials that are filled with tips and tricks. Let our top reviews help you pick the best hardware for your linux setup.

Visit blackdown.org

Key Findings

We analyzed Blackdown.org page load time and found that the first response time was 192 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

blackdown.org performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value6.9 s

34/100

10%

TBT (Total Blocking Time)

Value240 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0.297

40/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

www.blackdown.org

192 ms

2293da52e53f01b8e9d06ee31009accd.css

27 ms

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50 ms

d8c1bf2b9d1575b092477a5ff0fbe722.css

67 ms

bd6694205a50211355887a1d11ebf747.css

70 ms

Our browser made a total of 87 requests to load all elements on the main page. We found that 75% of them (65 requests) were addressed to the original Blackdown.org, 11% (10 requests) were made to and 8% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (418 ms) belongs to the original domain Blackdown.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 156.6 kB (12%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blackdown.org main page is 1.4 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. 60% of websites need less resources to load. Images take 844.2 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 152.1 kB

  • Original 182.3 kB
  • After minification 180.3 kB
  • After compression 30.1 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 152.1 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 3.9 kB

  • Original 844.2 kB
  • After minification 840.4 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. Blackdown images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 398 B

  • Original 206.4 kB
  • After minification 206.4 kB
  • After compression 206.0 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

-0%

Potential reduce by 216 B

  • Original 122.8 kB
  • After minification 122.8 kB
  • After compression 122.5 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. Blackdown.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 36 (55%)

Requests Now

66

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blackdown. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.blackdown.org

www.blackdown.org

192 ms

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Accessibility Review

blackdown.org accessibility score

82

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

blackdown.org best practices score

92

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

SEO Factors

blackdown.org SEO score

84

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

blackdown.org

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