Report Summary

  • 53

    Performance

    Renders faster than
    71% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

nccih.nih.gov

National Center for Complementary and Integrative Health

Page Load Speed

1.8 sec in total

First Response

54 ms

Resources Loaded

1.3 sec

Page Rendered

486 ms

nccih.nih.gov screenshot

About Website

Welcome to nccih.nih.gov homepage info - get ready to check Nccih Nih best content for China right away, or after learning these important things about nccih.nih.gov

Information and resources from the National Center for Complementary and Integrative Health, U.S. National Institutes of Health (NIH).

Visit nccih.nih.gov

Key Findings

We analyzed Nccih.nih.gov page load time and found that the first response time was 54 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

nccih.nih.gov performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

11/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.144

77/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

nccih.nih.gov

54 ms

nccih.nih.gov

242 ms

system.base.css

31 ms

comment_notify.css

37 ms

book.css

68 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 91% of them (82 requests) were addressed to the original Nccih.nih.gov, 2% (2 requests) were made to Netdna.bootstrapcdn.com and 2% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (496 ms) relates to the external source Search.usa.gov.

Page Optimization Overview & Recommendations

Page size can be reduced by 790.2 kB (38%)

Content Size

2.1 MB

After Optimization

1.3 MB

In fact, the total size of Nccih.nih.gov main page is 2.1 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. 65% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 46.5 kB

  • Original 57.7 kB
  • After minification 52.4 kB
  • After compression 11.2 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 46.5 kB or 81% of the original size.

Image Optimization

-6%

Potential reduce by 65.1 kB

  • Original 1.2 MB
  • After minification 1.1 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. Nccih Nih images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 415.3 kB

  • Original 555.8 kB
  • After minification 369.7 kB
  • After compression 140.5 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 415.3 kB or 75% of the original size.

CSS Optimization

-82%

Potential reduce by 263.2 kB

  • Original 321.4 kB
  • After minification 270.0 kB
  • After compression 58.1 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. Nccih.nih.gov needs all CSS files to be minified and compressed as it can save up to 263.2 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (63%)

Requests Now

78

After Optimization

29

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nccih Nih. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 38 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

nccih.nih.gov accessibility score

98

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.

Best Practices

nccih.nih.gov 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

Page has valid source maps

SEO Factors

nccih.nih.gov SEO score

100

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

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 Nccih.nih.gov 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 Nccih.nih.gov 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 Nccih Nih. 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: