Tools & Wizards About Us
kafka-tutorials.confluent.io screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

kafka-tutorials.confluent.io

Apache Kafka® Tutorials and Recipes by Confluent

Page Load Speed

1.4 sec in total

First Response

11 ms

Resources Loaded

559 ms

Page Rendered

781 ms

kafka-tutorials.confluent.io screenshot

About Website

Click here to check amazing Kafka Tutorials Confluent content for India. Otherwise, check out these important facts you probably never knew about kafka-tutorials.confluent.io

Apache Kafka Tutorials: Discover recipes and tutorials that bring your idea to proof-of-concept. Learn stream processing the simple way.

Visit kafka-tutorials.confluent.io

Key Findings

We analyzed Kafka-tutorials.confluent.io page load time and found that the first response time was 11 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

kafka-tutorials.confluent.io performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value8.0 s

22/100

10%

TBT (Total Blocking Time)

Value5,080 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value17.5 s

4/100

10%

Network Requests Diagram

kafka-tutorials.confluent.io

11 ms

75 ms

reveal

127 ms

otSDKStub.js

48 ms

15784060578.js

134 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 8% of them (1 request) were addressed to the original Kafka-tutorials.confluent.io, 54% (7 requests) were made to Developer.confluent.io and 23% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (134 ms) relates to the external source Cdn.optimizely.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 335.2 kB (83%)

Content Size

405.9 kB

After Optimization

70.7 kB

  • HTML
  • JavaScript

In fact, the total size of Kafka-tutorials.confluent.io main page is 405.9 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. 15% of websites need less resources to load. HTML takes 395.0 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 335.2 kB

  • Original 395.0 kB
  • After minification 394.9 kB
  • After compression 59.8 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 335.2 kB or 85% of the original size.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 10.9 kB
  • After minification 10.9 kB
  • After compression 10.8 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 9 (82%)

Requests Now

11

After Optimization

2

  • Images
  • JavaScript

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kafka Tutorials Confluent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

kafka-tutorials.confluent.io

kafka-tutorials.confluent.io

11 ms

75 ms

reveal

reveal

127 ms

otSDKStub.js

otSDKStub.js

48 ms

15784060578.js

15784060578.js

134 ms

OtAutoBlock.js

OtAutoBlock.js

63 ms

polyfill-aa0d8ceef24d4b0ad156.js

polyfill-aa0d8ceef24d4b0ad156.js

46 ms

app-504d2beccdc935040ebf.js

app-504d2beccdc935040ebf.js

53 ms

4c744e84-7963bf61c1aed06d812d.js

4c744e84-7963bf61c1aed06d812d.js

70 ms

framework-d18bc3a550775797e8ba.js

framework-d18bc3a550775797e8ba.js

69 ms

webpack-runtime-b65790088c2171a04338.js

webpack-runtime-b65790088c2171a04338.js

68 ms

3524f2d7-9ebb-4e43-a505-48b52705e155.json

3524f2d7-9ebb-4e43-a505-48b52705e155.json

70 ms

developer-logo.svg

developer-logo.svg

57 ms

Accessibility Review

kafka-tutorials.confluent.io accessibility score

85

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

Buttons do not have an accessible name

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

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

kafka-tutorials.confluent.io 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

Page has valid source maps

SEO Factors

kafka-tutorials.confluent.io SEO score

92

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kafka-tutorials.confluent.io 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 Kafka-tutorials.confluent.io 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

kafka-tutorials.confluent.io

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