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Report Summary

  • 67

    Performance

    Renders faster than
    79% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

dev-academy.com

Dev-Academy.com - Web security | Testing & automation | Application architecture

Page Load Speed

1.4 sec in total

First Response

81 ms

Resources Loaded

572 ms

Page Rendered

713 ms

dev-academy.com screenshot

About Website

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Key Findings

We analyzed Dev-academy.com page load time and found that the first response time was 81 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

dev-academy.com performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value1.4 s

100/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

dev-academy.com

81 ms

styles.css

22 ms

desktop.css

29 ms

dev-academy-logo.png

25 ms

menu.svg

24 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 66% of them (23 requests) were addressed to the original Dev-academy.com, 6% (2 requests) were made to Googletagmanager.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (439 ms) belongs to the original domain Dev-academy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 119.0 kB (7%)

Content Size

1.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Dev-academy.com main page is 1.6 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. 55% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 23.8 kB

  • Original 32.9 kB
  • After minification 32.9 kB
  • After compression 9.1 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 23.8 kB or 72% of the original size.

Image Optimization

-7%

Potential reduce by 94.6 kB

  • Original 1.3 MB
  • After minification 1.2 MB

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. Dev Academy images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 504 B

  • Original 268.1 kB
  • After minification 268.1 kB
  • After compression 267.6 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 14 (41%)

Requests Now

34

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dev Academy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

dev-academy.com

dev-academy.com

81 ms

styles.css

styles.css

22 ms

desktop.css

desktop.css

29 ms

dev-academy-logo.png

dev-academy-logo.png

25 ms

menu.svg

menu.svg

24 ms

close.svg

close.svg

107 ms

main.js

main.js

36 ms

gtm.js

gtm.js

37 ms

posthog.js

posthog.js

107 ms

dumb-test.js

dumb-test.js

64 ms

main-banner-test.js

main-banner-test.js

43 ms

sidebar-test.js

sidebar-test.js

54 ms

v84a3a4012de94ce1a686ba8c167c359c1696973893317

v84a3a4012de94ce1a686ba8c167c359c1696973893317

57 ms

large_banner.png

large_banner.png

284 ms

large_banner.png

large_banner.png

193 ms

large_banner.png

large_banner.png

162 ms

large_banner.png

large_banner.png

283 ms

large_banner.png

large_banner.png

304 ms

large_banner.png

large_banner.png

300 ms

large_banner.png

large_banner.png

316 ms

large_banner.png

large_banner.png

339 ms

large_banner.png

large_banner.png

439 ms

ninja-post-idea.svg

ninja-post-idea.svg

299 ms

chevron-right.svg

chevron-right.svg

271 ms

gtm.js

gtm.js

72 ms

array.js

array.js

56 ms

js

js

75 ms

analytics.js

analytics.js

129 ms

fbevents.js

fbevents.js

99 ms

hotjar-464298.js

hotjar-464298.js

175 ms

reactunified.bundle.js

reactunified.bundle.js

161 ms

collect

collect

16 ms

collect

collect

35 ms

modules.478d49d6cc21ec95d184.js

modules.478d49d6cc21ec95d184.js

22 ms

ga-audiences

ga-audiences

42 ms

Accessibility Review

dev-academy.com accessibility score

92

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

dev-academy.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

dev-academy.com SEO score

93

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 Dev-academy.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 Dev-academy.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

dev-academy.com

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