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codezinger.com screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

codezinger.com

CodeZinger - Online Coding labs for computer science programming courses

Page Load Speed

3.4 sec in total

First Response

46 ms

Resources Loaded

2.8 sec

Page Rendered

610 ms

codezinger.com screenshot

About Website

Visit codezinger.com now to see the best up-to-date Code Zinger content for India and also check out these interesting facts you probably never knew about codezinger.com

CodeZinger is the Coding labs for computer science courses with ready Problem Library, Autograding and Online Editor which gets you rolling in minutes.

Visit codezinger.com

Key Findings

We analyzed Codezinger.com page load time and found that the first response time was 46 ms and then it took 3.4 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

codezinger.com performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value16.7 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value1,880 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.235

53/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

Network Requests Diagram

codezinger.com

46 ms

codezinger.com

1604 ms

wp-emoji-release.min.js

12 ms

prettyPhoto.css

44 ms

wp-video-lightbox.css

36 ms

Our browser made a total of 206 requests to load all elements on the main page. We found that 82% of them (168 requests) were addressed to the original Codezinger.com, 14% (28 requests) were made to Fonts.gstatic.com and 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Codezinger.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 288.1 kB (15%)

Content Size

1.9 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Codezinger.com main page is 1.9 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 841.2 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 145.4 kB

  • Original 172.1 kB
  • After minification 170.8 kB
  • After compression 26.7 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 145.4 kB or 84% of the original size.

Image Optimization

-16%

Potential reduce by 135.5 kB

  • Original 841.2 kB
  • After minification 705.8 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. Obviously, Code Zinger needs image optimization as it can save up to 135.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 6.3 kB

  • Original 750.1 kB
  • After minification 750.1 kB
  • After compression 743.8 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.

CSS Optimization

-1%

Potential reduce by 916 B

  • Original 162.8 kB
  • After minification 162.8 kB
  • After compression 161.9 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. Codezinger.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 135 (79%)

Requests Now

170

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 170 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Code Zinger. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 127 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

codezinger.com

codezinger.com

46 ms

codezinger.com

codezinger.com

1604 ms

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12 ms

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44 ms

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36 ms

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18 ms

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33 ms

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32 ms

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53 ms

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39 ms

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Accessibility Review

codezinger.com accessibility score

94

Accessibility Issues

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

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

Links do not have a discernible name

Best Practices

codezinger.com best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

codezinger.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

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 Codezinger.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 Codezinger.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

codezinger.com

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