Tools & Wizards About Us

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

nap.edu

The National Academies Press

Page Load Speed

20.6 sec in total

First Response

36 ms

Resources Loaded

20.2 sec

Page Rendered

437 ms

About Website

Welcome to nap.edu homepage info - get ready to check Nap best content for United States right away, or after learning these important things about nap.edu

The National Academies Press (NAP) publishes authoritative reports issued by The National Academies of Science, Engineering, and Medicine (NASEM).

Visit nap.edu

Key Findings

We analyzed Nap.edu page load time and found that the first response time was 36 ms and then it took 20.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

nap.edu performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value19.5 s

0/100

25%

SI (Speed Index)

Value12.4 s

3/100

10%

TBT (Total Blocking Time)

Value1,160 ms

22/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value21.1 s

1/100

10%

Network Requests Diagram

nap.edu

36 ms

nap.nationalacademies.org

137 ms

line-awesome.min.css

154 ms

nasem-nap.css

59 ms

topnav-lite-min.css

21 ms

Our browser made a total of 97 requests to load all elements on the main page. We found that 3% of them (3 requests) were addressed to the original Nap.edu, 59% (57 requests) were made to Nap.nationalacademies.org and 8% (8 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (19.6 sec) relates to the external source Nasemoceprodcomm-nationalacademies.ocecdn.oraclecloud.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 824.6 kB (26%)

Content Size

3.2 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nap.edu main page is 3.2 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. 75% 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 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 282.0 kB

  • Original 376.8 kB
  • After minification 351.8 kB
  • After compression 94.8 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 282.0 kB or 75% of the original size.

Image Optimization

-4%

Potential reduce by 80.0 kB

  • Original 2.0 MB
  • After minification 1.9 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. Nap images are well optimized though.

JavaScript Optimization

-32%

Potential reduce by 133.4 kB

  • Original 421.7 kB
  • After minification 416.3 kB
  • After compression 288.3 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 133.4 kB or 32% of the original size.

CSS Optimization

-81%

Potential reduce by 329.2 kB

  • Original 404.8 kB
  • After minification 327.2 kB
  • After compression 75.5 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. Nap.edu needs all CSS files to be minified and compressed as it can save up to 329.2 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (40%)

Requests Now

81

After Optimization

49

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nap. 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 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nap.edu accessibility score

88

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

Best Practices

nap.edu 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

Page has valid source maps

SEO Factors

nap.edu SEO score

92

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nap.edu 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 Nap.edu 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

Open Graph description is not detected on the main page of Nap. 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: