Tools & Wizards About Us
udacity.com.br screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

udacity.com.br

Learn the Latest Tech Skills; Advance Your Career | Udacity

Page Load Speed

111.9 sec in total

First Response

232 ms

Resources Loaded

7.1 sec

Page Rendered

104.6 sec

udacity.com.br screenshot

About Website

Welcome to udacity.com.br homepage info - get ready to check Udacity best content right away, or after learning these important things about udacity.com.br

Learn online and advance your career with courses in programming, data science, artificial intelligence, digital marketing, and more. Gain in-demand technical skills. Join today!

Visit udacity.com.br

Key Findings

We analyzed Udacity.com.br page load time and found that the first response time was 232 ms and then it took 111.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

udacity.com.br performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value30,220 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.124

83/100

15%

TTI (Time to Interactive)

Value51.9 s

0/100

10%

Network Requests Diagram

udacity.com.br

232 ms

www.udacity.com

143 ms

7f2523fe9e19d89e.css

81 ms

76c8ccc82bdb1369.css

153 ms

polyfills-78c92fac7aa8fdd8.js

137 ms

Our browser made a total of 112 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Udacity.com.br, 60% (67 requests) were made to Cdn.sanity.io and 27% (30 requests) were made to Udacity.com. The less responsive or slowest element that took the longest time to load (4.4 sec) relates to the external source Cdn.sanity.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 140.0 MB (42%)

Content Size

332.0 MB

After Optimization

192.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Udacity.com.br main page is 332.0 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 330.2 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 1.4 MB

  • Original 1.8 MB
  • After minification 1.7 MB
  • After compression 362.1 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 1.4 MB or 79% of the original size.

Image Optimization

-42%

Potential reduce by 138.6 MB

  • Original 330.2 MB
  • After minification 191.6 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. Obviously, Udacity needs image optimization as it can save up to 138.6 MB or 42% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 54.2 kB
  • After minification 54.2 kB
  • After compression 54.2 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

-2%

Potential reduce by 71 B

  • Original 3.4 kB
  • After minification 3.4 kB
  • After compression 3.4 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. Udacity.com.br has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (16%)

Requests Now

110

After Optimization

92

  • Images
  • JavaScript
  • CSS

The browser has sent 110 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Udacity. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

udacity.com.br

udacity.com.br

232 ms

www.udacity.com

www.udacity.com

143 ms

7f2523fe9e19d89e.css

7f2523fe9e19d89e.css

81 ms

76c8ccc82bdb1369.css

76c8ccc82bdb1369.css

153 ms

polyfills-78c92fac7aa8fdd8.js

polyfills-78c92fac7aa8fdd8.js

137 ms

airgap.js

airgap.js

183 ms

webpack-387bcf31d6faf043.js

webpack-387bcf31d6faf043.js

118 ms

framework-511a18a757f331df.js

framework-511a18a757f331df.js

134 ms

main-21ca4d967e834de1.js

main-21ca4d967e834de1.js

343 ms

_app-62a38ee8eb194083.js

_app-62a38ee8eb194083.js

193 ms

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192 ms

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342 ms

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340 ms

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340 ms

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355 ms

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341 ms

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367 ms

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369 ms

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396 ms

1002-faa901a9edd55b8a.js

1002-faa901a9edd55b8a.js

381 ms

index-b7185427a197f360.js

index-b7185427a197f360.js

368 ms

_buildManifest.js

_buildManifest.js

375 ms

_ssgManifest.js

_ssgManifest.js

392 ms

school-ai-one.svg

school-ai-one.svg

191 ms

school-autonomous-sys-one.svg

school-autonomous-sys-one.svg

334 ms

school-business-one.svg

school-business-one.svg

347 ms

hand-plant-one.svg

hand-plant-one.svg

388 ms

school-cloud-computing-one.svg

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374 ms

school-cybersecurity-one.svg

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370 ms

school-data-sci-one.svg

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382 ms

school-executive-leadership-one.svg

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366 ms

school-product-mgt-one.svg

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376 ms

school-programming-one.svg

school-programming-one.svg

400 ms

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525 ms

image

image

345 ms

image

image

354 ms

image

image

346 ms

image

image

366 ms

udacity-accenture-logo.svg

udacity-accenture-logo.svg

364 ms

facebook.svg

facebook.svg

387 ms

twitter.svg

twitter.svg

376 ms

linkedin.svg

linkedin.svg

389 ms

instagram.svg

instagram.svg

384 ms

avatar-one.svg

avatar-one.svg

351 ms

avatar-three.svg

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354 ms

avatar-two.svg

avatar-two.svg

359 ms

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1117 ms

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1395 ms

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421 ms

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371 ms

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425 ms

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617 ms

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1075 ms

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729 ms

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683 ms

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844 ms

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978 ms

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971 ms

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1332 ms

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1350 ms

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1311 ms

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1490 ms

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1493 ms

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1912 ms

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1636 ms

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1749 ms

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2040 ms

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2072 ms

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2188 ms

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2223 ms

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2701 ms

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2338 ms

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2667 ms

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2836 ms

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2626 ms

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2935 ms

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2901 ms

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3349 ms

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3297 ms

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3468 ms

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3411 ms

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3192 ms

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2971 ms

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3318 ms

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3449 ms

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3341 ms

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3148 ms

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3280 ms

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3197 ms

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3265 ms

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3700 ms

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3418 ms

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3798 ms

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3134 ms

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3435 ms

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3802 ms

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4025 ms

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3938 ms

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3483 ms

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3994 ms

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3708 ms

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3769 ms

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3896 ms

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4382 ms

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4019 ms

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4426 ms

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3565 ms

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3235 ms

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3385 ms

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3452 ms

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3268 ms

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3467 ms

Accessibility Review

udacity.com.br accessibility score

94

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

Image elements do not have [alt] attributes

Best Practices

udacity.com.br best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

udacity.com.br SEO score

86

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

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 Udacity.com.br 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 Udacity.com.br 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

udacity.com.br

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