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dm.usefedora.com screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

dm.usefedora.com

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Page Load Speed

1.5 sec in total

First Response

95 ms

Resources Loaded

1.2 sec

Page Rendered

137 ms

dm.usefedora.com screenshot

About Website

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Key Findings

We analyzed Dm.usefedora.com page load time and found that the first response time was 95 ms and then it took 1.4 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

dm.usefedora.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value12.4 s

3/100

10%

TBT (Total Blocking Time)

Value1,810 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

dm.usefedora.com

95 ms

courses

101 ms

school-css-1458163104-23871-b31c7e7fdc9bb0bb63fc212ea98cd26e.css

275 ms

E-v1.js

55 ms

application-00c192875a4ec9587ff03b97eae2cee8b6e647adf6fb82357e9b590217f29ae1.js

68 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 16% of them (4 requests) were addressed to the original Dm.usefedora.com, 32% (8 requests) were made to D2oz8i5n9se8ej.cloudfront.net and 16% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (544 ms) relates to the external source D6xfpzo6h49n1.cloudfront.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 249.5 kB (21%)

Content Size

1.2 MB

After Optimization

926.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dm.usefedora.com main page is 1.2 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. 50% of websites need less resources to load. Images take 724.7 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 13.2 kB

  • Original 18.7 kB
  • After minification 15.4 kB
  • After compression 5.4 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. This page needs HTML code to be minified as it can gain 3.3 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 13.2 kB or 71% of the original size.

Image Optimization

-2%

Potential reduce by 16.1 kB

  • Original 724.7 kB
  • After minification 708.6 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. Dm Usefedora images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 32.0 kB

  • Original 208.4 kB
  • After minification 208.4 kB
  • After compression 176.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 32.0 kB or 15% of the original size.

CSS Optimization

-84%

Potential reduce by 188.2 kB

  • Original 223.7 kB
  • After minification 203.4 kB
  • After compression 35.4 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. Dm.usefedora.com needs all CSS files to be minified and compressed as it can save up to 188.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (24%)

Requests Now

17

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dm Usefedora. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

dm.usefedora.com

dm.usefedora.com

95 ms

courses

courses

101 ms

school-css-1458163104-23871-b31c7e7fdc9bb0bb63fc212ea98cd26e.css

school-css-1458163104-23871-b31c7e7fdc9bb0bb63fc212ea98cd26e.css

275 ms

E-v1.js

E-v1.js

55 ms

application-00c192875a4ec9587ff03b97eae2cee8b6e647adf6fb82357e9b590217f29ae1.js

application-00c192875a4ec9587ff03b97eae2cee8b6e647adf6fb82357e9b590217f29ae1.js

68 ms

iframe_shim

iframe_shim

79 ms

visits

visits

134 ms

analytics.js

analytics.js

52 ms

font-awesome.min.css

font-awesome.min.css

20 ms

analytics.js

analytics.js

17 ms

TJpBQUTQwuIqnDPS8OO0_on-site-thumbnail.png

TJpBQUTQwuIqnDPS8OO0_on-site-thumbnail.png

409 ms

teachable-logo-white-efd32576079839534d5b6e87bf4424e99b12624f854b2c500a4d3f0b6e2af46b.svg

teachable-logo-white-efd32576079839534d5b6e87bf4424e99b12624f854b2c500a4d3f0b6e2af46b.svg

12 ms

aTUFANamToq75JT4bsr0_robpenered320.jpg

aTUFANamToq75JT4bsr0_robpenered320.jpg

397 ms

MMHQuhdTD6Qs5TFhZBtq_fedora-thumbnail-dm-course.png

MMHQuhdTD6Qs5TFhZBtq_fedora-thumbnail-dm-course.png

544 ms

proximanova-regular-webfont.woff

proximanova-regular-webfont.woff

62 ms

proximanova-light-webfont.woff

proximanova-light-webfont.woff

63 ms

proximanova-semibold-webfont.woff

proximanova-semibold-webfont.woff

63 ms

proximanova-bold-webfont.woff

proximanova-bold-webfont.woff

72 ms

proximanova-extrabold-webfont.woff

proximanova-extrabold-webfont.woff

61 ms

iframe_shim

iframe_shim

44 ms

collect

collect

66 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

8 ms

collect

collect

16 ms

collect

collect

6 ms

nr-885.min.js

nr-885.min.js

42 ms

Accessibility Review

dm.usefedora.com accessibility score

67

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

dm.usefedora.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

dm.usefedora.com SEO score

71

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

Image elements do not have [alt] attributes

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 Dm.usefedora.com 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 Dm.usefedora.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

dm.usefedora.com

Open Graph description is not detected on the main page of Dm Usefedora. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: