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Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

nielsennormangroup.com

Nielsen Norman Group: UX Training, Consulting, & Research

Page Load Speed

1.1 sec in total

First Response

72 ms

Resources Loaded

912 ms

Page Rendered

134 ms

nielsennormangroup.com screenshot

About Website

Welcome to nielsennormangroup.com homepage info - get ready to check Nielsen Norman Group best content right away, or after learning these important things about nielsennormangroup.com

A leader in the user experience field, NN/g conducts groundbreaking research, trains and certifies UX practitioners, and provides UX consulting to clients.

Visit nielsennormangroup.com

Key Findings

We analyzed Nielsennormangroup.com page load time and found that the first response time was 72 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

nielsennormangroup.com performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value1,610 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.052

99/100

15%

TTI (Time to Interactive)

Value13.8 s

10/100

10%

Network Requests Diagram

www.nngroup.com

72 ms

c7e8214bbd60.css

120 ms

fc6e01a2d4e4.css

139 ms

09399e6ab84e.js

141 ms

347830041.js

208 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Nielsennormangroup.com, 9% (3 requests) were made to Google-analytics.com and 6% (2 requests) were made to Nngroup.com. The less responsive or slowest element that took the longest time to load (283 ms) relates to the external source Dnn506yrbagrg.cloudfront.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 796.4 kB (63%)

Content Size

1.3 MB

After Optimization

469.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nielsennormangroup.com main page is 1.3 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. 30% of websites need less resources to load. Javascripts take 777.4 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 21.8 kB

  • Original 29.8 kB
  • After minification 25.5 kB
  • After compression 8.0 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 4.3 kB, which is 14% 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 21.8 kB or 73% of the original size.

Image Optimization

-15%

Potential reduce by 32.1 kB

  • Original 220.9 kB
  • After minification 188.8 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. Obviously, Nielsen Norman Group needs image optimization as it can save up to 32.1 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-69%

Potential reduce by 540.0 kB

  • Original 777.4 kB
  • After minification 701.8 kB
  • After compression 237.4 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 540.0 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 202.5 kB

  • Original 238.0 kB
  • After minification 237.8 kB
  • After compression 35.5 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. Nielsennormangroup.com needs all CSS files to be minified and compressed as it can save up to 202.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (37%)

Requests Now

30

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nielsen Norman Group. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.nngroup.com

www.nngroup.com

72 ms

c7e8214bbd60.css

c7e8214bbd60.css

120 ms

fc6e01a2d4e4.css

fc6e01a2d4e4.css

139 ms

09399e6ab84e.js

09399e6ab84e.js

141 ms

347830041.js

347830041.js

208 ms

foundation.min.js

foundation.min.js

138 ms

app.js

app.js

137 ms

scroll-to-fixed.js

scroll-to-fixed.js

137 ms

conversion.js

conversion.js

104 ms

analytics.js

analytics.js

86 ms

hotjar-121605.js

hotjar-121605.js

178 ms

logo-wordmark.png

logo-wordmark.png

66 ms

twitter%20follow%20button.png

twitter%20follow%20button.png

110 ms

Kara_training_copy-wide-retouched-600x400.png.300x200_q80.png

Kara_training_copy-wide-retouched-600x400.png.300x200_q80.png

90 ms

washington_dc.jpg.225x150_q95_crop_upscale.jpg

washington_dc.jpg.225x150_q95_crop_upscale.jpg

61 ms

washington_dc.jpg.163x80_q95_crop_upscale.jpg

washington_dc.jpg.163x80_q95_crop_upscale.jpg

77 ms

chicago_sculpture.jpg.225x150_q95_crop_upscale.jpg

chicago_sculpture.jpg.225x150_q95_crop_upscale.jpg

77 ms

chicago_sculpture.jpg.163x80_q95_crop_upscale.jpg

chicago_sculpture.jpg.163x80_q95_crop_upscale.jpg

73 ms

home-consulting.300x200_q95.png.300x200_q80.jpg

home-consulting.300x200_q95.png.300x200_q80.jpg

76 ms

home-reports.jpg.300x200_q80_crop.jpg

home-reports.jpg.300x200_q80_crop.jpg

75 ms

footer_separator.png

footer_separator.png

89 ms

2421.js

2421.js

283 ms

73 ms

842088d0-1ae2-40d0-8561-3c95761ba7a6.woff

842088d0-1ae2-40d0-8561-3c95761ba7a6.woff

70 ms

102ab74c-0e84-4fe5-a17a-b20fb643591a.woff

102ab74c-0e84-4fe5-a17a-b20fb643591a.woff

60 ms

secure.js

secure.js

207 ms

linkid.js

linkid.js

27 ms

61 ms

collect

collect

3 ms

collect

collect

76 ms

modules-043c1e6abe660c48857202e419ff9d8a.js

modules-043c1e6abe660c48857202e419ff9d8a.js

24 ms

38 ms

nr-885.min.js

nr-885.min.js

103 ms

s

s

45 ms

u

u

43 ms

Accessibility Review

nielsennormangroup.com accessibility score

94

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

High

Some elements have a [tabindex] value greater than 0

Best Practices

nielsennormangroup.com 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

nielsennormangroup.com SEO score

98

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Nielsennormangroup.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 Nielsennormangroup.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

nielsennormangroup.com

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