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blackle.com screenshot

Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 39% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

blackle.com

Blackle - Energy Saving Search

Page Load Speed

758 ms in total

First Response

275 ms

Resources Loaded

380 ms

Page Rendered

103 ms

blackle.com screenshot

About Website

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

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Key Findings

We analyzed Blackle.com page load time and found that the first response time was 275 ms and then it took 483 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

blackle.com performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value0.8 s

100/100

10%

TBT (Total Blocking Time)

Value400 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

blackle.com

275 ms

ga.js

10 ms

l.jpg

46 ms

branding.css

47 ms

poweredby_000000.gif

47 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 11% of them (1 request) were addressed to the original Blackle.com, 33% (3 requests) were made to Cdn.bstat.co and 22% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (275 ms) belongs to the original domain Blackle.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.9 kB (6%)

Content Size

67.9 kB

After Optimization

64.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blackle.com main page is 67.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 45.6 kB which makes up the majority of the site volume.

HTML Optimization

-53%

Potential reduce by 2.6 kB

  • Original 4.9 kB
  • After minification 4.9 kB
  • After compression 2.3 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 2.6 kB or 53% of the original size.

Image Optimization

-3%

Potential reduce by 1.2 kB

  • Original 45.6 kB
  • After minification 44.3 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. Blackle images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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

-24%

Potential reduce by 77 B

  • Original 322 B
  • After minification 322 B
  • After compression 245 B

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. Blackle.com needs all CSS files to be minified and compressed as it can save up to 77 B or 24% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blackle. According to our analytics all requests are already optimized.

Network Requests Diagram

blackle.com

blackle.com

275 ms

ga.js

ga.js

10 ms

l.jpg

l.jpg

46 ms

branding.css

branding.css

47 ms

poweredby_000000.gif

poweredby_000000.gif

47 ms

hide.png

hide.png

45 ms

__utm.gif

__utm.gif

28 ms

i.png

i.png

3 ms

branding.css

branding.css

53 ms

Accessibility Review

blackle.com accessibility score

73

Accessibility Issues

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

Best Practices

blackle.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

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

blackle.com SEO score

67

Search Engine Optimization Advices

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 Blackle.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 Blackle.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

blackle.com

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