5.8 sec in total
94 ms
1.1 sec
4.6 sec
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Visit udacity.orgWe analyzed Udacity.org page load time and found that the first response time was 94 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
udacity.org performance score
name
value
score
weighting
Value3.5 s
34/100
10%
Value10.3 s
0/100
25%
Value18.2 s
0/100
10%
Value31,270 ms
0/100
30%
Value0.032
100/100
15%
Value47.3 s
0/100
10%
94 ms
167 ms
49 ms
146 ms
115 ms
Our browser made a total of 80 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Udacity.org, 95% (76 requests) were made to Udacity.com and 4% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (444 ms) relates to the external source Udacity.com.
Page size can be reduced by 94.2 kB (4%)
2.6 MB
2.5 MB
In fact, the total size of Udacity.org main page is 2.6 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. 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 2.4 MB which makes up the majority of the site volume.
Potential reduce by 69.4 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 69.4 kB or 81% of the original size.
Potential reduce by 24.2 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. Udacity images are well optimized though.
Potential reduce by 284 B
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.
Potential reduce by 314 B
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.org has all CSS files already compressed.
Number of requests can be reduced by 33 (45%)
73
40
The browser has sent 73 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 25 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
udacity.org
94 ms
www.udacity.com
167 ms
0bda84c1563dccd05c0d.css
49 ms
16579e70d435d1d57f6a.css
146 ms
9549c19393b488f750c7.css
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ea9f452f56ecd632c8d8.css
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bf82438091918d125568.css
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polyfills-a40ef1678bae11e696dba45124eadd70.js
82 ms
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527.849c8ac8d1c8dd1ee576.js
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124 ms
webpack-38a2b81689b89c96e4ce.js
145 ms
framework-19d8684231e2bb7ff9a4.js
171 ms
main-8fbddbd3d4b3b2e64d0f.js
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419 ms
%5B%5B...slug%5D%5D-7ad24b5bf50ccb5d8cb5.js
436 ms
_buildManifest.js
436 ms
_ssgManifest.js
429 ms
udacity-tt-logo.svg
407 ms
mobile-open.svg
424 ms
ai.svg
444 ms
autonomous-systems.svg
427 ms
business.svg
431 ms
cloud-computing.svg
440 ms
cybersecurity.svg
404 ms
data-science.svg
417 ms
executive-leadership.svg
365 ms
programming.svg
353 ms
ipsos-promo-1.png
376 ms
project-management.svg
361 ms
IDC_Artwork_Desktop__1__1_.png
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icon-enterprise.svg
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logo-forrester.svg
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icon-government.svg
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logo-misk-academy.png
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icon-individuals.svg
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udacitys-talent-transformation-suite-graphic.png
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icon-workshop-dark.svg
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icon-impact-dark.svg
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udacity-digital-competency-platform-0.png
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icon-school-ai.svg
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icon-school-autonomous-systems.svg
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icon-school-business.svg
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icon-cloud-computing.svg
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157 ms
customer-logos-mobile2.png
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icon-facebook.svg
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icon-twitter.svg
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icon-linkedin.svg
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icon-instagram.svg
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icon-arrow-up-blue.svg
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icon-arrow-down-black.svg
162 ms
cta-background2.jpg
190 ms
PolySans-Neutral.woff
146 ms
PolySans-Median.woff
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75 ms
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76 ms
MTP_ySUJH_bn48VBG8sNSqRDOzjiPcYnFooOUGCOsRk.woff
76 ms
udacity.org accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Image elements do not have [alt] attributes
udacity.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
udacity.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Udacity.org 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.org 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.
udacity.org
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: