Tools & Wizards About Us
urfie.net screenshot

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 56

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

urfie.net

Using R, Python and Julia for Introductory Econometrics

Page Load Speed

1.9 sec in total

First Response

278 ms

Resources Loaded

1.2 sec

Page Rendered

449 ms

urfie.net screenshot

About Website

Visit urfie.net now to see the best up-to-date Urfie content for Egypt and also check out these interesting facts you probably never knew about urfie.net

This book introduces the software package R for econometrics. It is designed to be highly compatible with Jeffrey Wooldridge's 'Introductory Econometrics'.

Visit urfie.net

Key Findings

We analyzed Urfie.net page load time and found that the first response time was 278 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

urfie.net performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

95/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

87/100

25%

SI (Speed Index)

Value1.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.14

79/100

15%

TTI (Time to Interactive)

Value2.6 s

98/100

10%

Network Requests Diagram

urfie.net

278 ms

urfie.css

102 ms

css

54 ms

URfIE-Front-sm.png

395 ms

amazon-logo_transparent.png

219 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 75% of them (15 requests) were addressed to the original Urfie.net, 20% (4 requests) were made to Fonts.gstatic.com and 5% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (790 ms) belongs to the original domain Urfie.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 49.6 kB (12%)

Content Size

427.9 kB

After Optimization

378.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Urfie.net main page is 427.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 410.0 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 9.4 kB

  • Original 14.3 kB
  • After minification 13.8 kB
  • After compression 4.9 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 9.4 kB or 66% of the original size.

Image Optimization

-9%

Potential reduce by 37.5 kB

  • Original 410.0 kB
  • After minification 372.5 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. Urfie images are well optimized though.

CSS Optimization

-76%

Potential reduce by 2.8 kB

  • Original 3.6 kB
  • After minification 2.5 kB
  • After compression 886 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. Urfie.net needs all CSS files to be minified and compressed as it can save up to 2.8 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (47%)

Requests Now

15

After Optimization

8

  • Images
  • CSS

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

Network Requests Diagram

urfie.net

urfie.net

278 ms

urfie.css

urfie.css

102 ms

css

css

54 ms

URfIE-Front-sm.png

URfIE-Front-sm.png

395 ms

amazon-logo_transparent.png

amazon-logo_transparent.png

219 ms

facebook_button.gif

facebook_button.gif

203 ms

button_fbk.png

button_fbk.png

209 ms

button_twt.png

button_twt.png

210 ms

button_linkedin.png

button_linkedin.png

209 ms

button_pint.png

button_pint.png

310 ms

button_gpl.png

button_gpl.png

310 ms

button_eml.png

button_eml.png

311 ms

new.png

new.png

324 ms

HTML5_Badge_32.png

HTML5_Badge_32.png

325 ms

UPfIE-Front-sm.png

UPfIE-Front-sm.png

720 ms

hetreg-web.png

hetreg-web.png

790 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pbCGPrc.woff

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pbCGPrc.woff

21 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpbCGPrc.woff

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpbCGPrc.woff

28 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvaorCGPrc.woff

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvaorCGPrc.woff

38 ms

0QI6MX1D_JOuGQbT0gvTJPa787weuxJPkqs.woff

0QI6MX1D_JOuGQbT0gvTJPa787weuxJPkqs.woff

40 ms

Accessibility Review

urfie.net accessibility score

56

Accessibility Issues

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

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

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

urfie.net best practices score

67

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

High

Serves images with low resolution

SEO Factors

urfie.net SEO score

67

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 Urfie.net 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 Urfie.net 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

urfie.net

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