Tools & Wizards About Us
blackbelt.analyticsvidhya.com screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

blackbelt.analyticsvidhya.com

Certified AI/ML BlackBelt Plus Program

Page Load Speed

3.2 sec in total

First Response

21 ms

Resources Loaded

2.9 sec

Page Rendered

280 ms

blackbelt.analyticsvidhya.com screenshot

About Website

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Key Findings

We analyzed Blackbelt.analyticsvidhya.com page load time and found that the first response time was 21 ms and then it took 3.2 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

blackbelt.analyticsvidhya.com performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value1,230 ms

20/100

30%

CLS (Cumulative Layout Shift)

Value0.092

92/100

15%

TTI (Time to Interactive)

Value13.6 s

11/100

10%

Network Requests Diagram

blackbelt.analyticsvidhya.com

21 ms

bbplus

489 ms

css2

47 ms

jquery.min.js

44 ms

swiper-bundle.min.js

59 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 4% of them (1 request) were addressed to the original Blackbelt.analyticsvidhya.com, 30% (7 requests) were made to Fonts.gstatic.com and 17% (4 requests) were made to Analyticsvidhya.com. The less responsive or slowest element that took the longest time to load (1.7 sec) relates to the external source Imgcdn.analyticsvidhya.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 59.5 kB (10%)

Content Size

586.0 kB

After Optimization

526.6 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Blackbelt.analyticsvidhya.com main page is 586.0 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. 65% of websites need less resources to load. Images take 403.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 58.2 kB

  • Original 74.3 kB
  • After minification 74.1 kB
  • After compression 16.1 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 58.2 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 1.0 kB

  • Original 403.8 kB
  • After minification 402.8 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. Black Belt Analyticsvidhya images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 212 B

  • Original 107.9 kB
  • After minification 107.9 kB
  • After compression 107.6 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.

Requests Breakdown

Number of requests can be reduced by 6 (46%)

Requests Now

13

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Black Belt Analyticsvidhya. 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

blackbelt.analyticsvidhya.com

blackbelt.analyticsvidhya.com

21 ms

bbplus

bbplus

489 ms

css2

css2

47 ms

jquery.min.js

jquery.min.js

44 ms

swiper-bundle.min.js

swiper-bundle.min.js

59 ms

main.9b6dac68.js

main.9b6dac68.js

328 ms

main.f905af20.css

main.f905af20.css

733 ms

events.js

events.js

780 ms

webengage-min-v-6.0.js

webengage-min-v-6.0.js

64 ms

chart.js

chart.js

39 ms

chartjs-adapter-date-fns

chartjs-adapter-date-fns

55 ms

data_science.jpg

data_science.jpg

32 ms

whatsapp.png

whatsapp.png

785 ms

[object%20Object]

[object%20Object]

770 ms

machine_learning.jpg

machine_learning.jpg

46 ms

hero-image-bb.png

hero-image-bb.png

1658 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuLyfMZg.ttf

24 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuI6fMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuI6fMZg.ttf

43 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuOKfMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuOKfMZg.ttf

62 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuGKYMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuGKYMZg.ttf

62 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuFuYMZg.ttf

58 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuDyYMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuDyYMZg.ttf

62 ms

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuBWYMZg.ttf

UcCO3FwrK3iLTeHuS_nVMrMxCp50SjIw2boKoduKmMEVuBWYMZg.ttf

62 ms

Accessibility Review

blackbelt.analyticsvidhya.com accessibility score

70

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

[role] values are not valid

High

ARIA IDs are not unique

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

Low

No form fields have multiple labels

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

blackbelt.analyticsvidhya.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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

blackbelt.analyticsvidhya.com SEO score

79

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

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 Blackbelt.analyticsvidhya.com 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 Blackbelt.analyticsvidhya.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

blackbelt.analyticsvidhya.com

Open Graph description is not detected on the main page of Black Belt Analyticsvidhya. 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: