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nida.nih.gov screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

nida.nih.gov

NIDA.NIH.GOV | National Institute on Drug Abuse (NIDA)

Page Load Speed

336 ms in total

First Response

15 ms

Resources Loaded

321 ms

Page Rendered

0 ms

nida.nih.gov screenshot

About Website

Visit nida.nih.gov now to see the best up-to-date NIDA NIH content for China and also check out these interesting facts you probably never knew about nida.nih.gov

NIDA's mission is to advance science on the causes and consequences of drug use and addiction and to apply that knowledge to improve individual and public health. NIDA is one of the National Inst...

Visit nida.nih.gov

Key Findings

We analyzed Nida.nih.gov page load time and found that the first response time was 15 ms and then it took 321 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

nida.nih.gov performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

64/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.045

99/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

nida.nih.gov

15 ms

nida.nih.gov

25 ms

optimize.js

71 ms

ajax-progress.module.css

9 ms

align.module.css

10 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 86% of them (60 requests) were addressed to the original Nida.nih.gov, 6% (4 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Static.addtoany.com. The less responsive or slowest element that took the longest time to load (143 ms) relates to the external source Static.addtoany.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 77.7 kB (9%)

Content Size

882.2 kB

After Optimization

804.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nida.nih.gov main page is 882.2 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. 65% of websites need less resources to load. Images take 636.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 65.2 kB

  • Original 79.1 kB
  • After minification 66.4 kB
  • After compression 13.9 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. This page needs HTML code to be minified as it can gain 12.7 kB, which is 16% 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 65.2 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 1.5 kB

  • Original 636.6 kB
  • After minification 635.1 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. NIDA NIH images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 136 B

  • Original 121.7 kB
  • After minification 121.7 kB
  • After compression 121.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-24%

Potential reduce by 10.9 kB

  • Original 44.8 kB
  • After minification 43.7 kB
  • After compression 33.9 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. Nida.nih.gov needs all CSS files to be minified and compressed as it can save up to 10.9 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (63%)

Requests Now

64

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NIDA 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 8 to 1 for JavaScripts and from 34 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nida.nih.gov

nida.nih.gov

15 ms

nida.nih.gov

nida.nih.gov

25 ms

optimize.js

optimize.js

71 ms

ajax-progress.module.css

ajax-progress.module.css

9 ms

align.module.css

align.module.css

10 ms

autocomplete-loading.module.css

autocomplete-loading.module.css

24 ms

fieldgroup.module.css

fieldgroup.module.css

31 ms

container-inline.module.css

container-inline.module.css

23 ms

clearfix.module.css

clearfix.module.css

24 ms

details.module.css

details.module.css

24 ms

hidden.module.css

hidden.module.css

29 ms

item-list.module.css

item-list.module.css

40 ms

js.module.css

js.module.css

40 ms

nowrap.module.css

nowrap.module.css

40 ms

position-container.module.css

position-container.module.css

40 ms

progress.module.css

progress.module.css

41 ms

reset-appearance.module.css

reset-appearance.module.css

40 ms

resize.module.css

resize.module.css

44 ms

sticky-header.module.css

sticky-header.module.css

44 ms

system-status-counter.css

system-status-counter.css

44 ms

system-status-report-counters.css

system-status-report-counters.css

44 ms

system-status-report-general-info.css

system-status-report-general-info.css

44 ms

tabledrag.module.css

tabledrag.module.css

44 ms

tablesort.module.css

tablesort.module.css

46 ms

tree-child.module.css

tree-child.module.css

45 ms

views.module.css

views.module.css

47 ms

addtoany.css

addtoany.css

46 ms

content_accordion.css

content_accordion.css

47 ms

extlink.css

extlink.css

45 ms

accordion.frontend.css

accordion.frontend.css

48 ms

paragraphs.unpublished.css

paragraphs.unpublished.css

47 ms

admin_styles_override.css

admin_styles_override.css

48 ms

styles.css

styles.css

48 ms

styles.css

styles.css

49 ms

all.min.css

all.min.css

49 ms

css

css

58 ms

js_IXk4dRU_-mt-4y5cC5e4K5huRGLbNwwiq-QnGs3bIfY.js

js_IXk4dRU_-mt-4y5cC5e4K5huRGLbNwwiq-QnGs3bIfY.js

49 ms

page.js

page.js

143 ms

js_escJkVRwJ0PrpGph_kiW5J2HGNs-tfvww-CurD35Cgc.js

js_escJkVRwJ0PrpGph_kiW5J2HGNs-tfvww-CurD35Cgc.js

49 ms

accordion.frontend.min.js

accordion.frontend.min.js

49 ms

js_eD8TMdGGT51gzmpkQJdP5YCP4G9tiGR-Cp4Q9XmxsvI.js

js_eD8TMdGGT51gzmpkQJdP5YCP4G9tiGR-Cp4Q9XmxsvI.js

49 ms

gtm.js

gtm.js

116 ms

us_flag_small.png

us_flag_small.png

21 ms

expand_more.png

expand_more.png

20 ms

icon-dot-gov.svg

icon-dot-gov.svg

22 ms

icon-https.svg

icon-https.svg

19 ms

nida-logo.svg

nida-logo.svg

20 ms

nida-brain-02-brighter.jpg

nida-brain-02-brighter.jpg

23 ms

pedestrians_city-g-1392135352.jpg

pedestrians_city-g-1392135352.jpg

30 ms

men-workcrew-g-1270224596.jpg

men-workcrew-g-1270224596.jpg

29 ms

shadow-family-g-683266543.jpg

shadow-family-g-683266543.jpg

29 ms

tonl-009446.optimized.jpg

tonl-009446.optimized.jpg

29 ms

home-about.jpg

home-about.jpg

29 ms

home-director.jpg

home-director.jpg

30 ms

drugs-and-the-brain.jpg

drugs-and-the-brain.jpg

41 ms

nidamed_promo.jpg

nidamed_promo.jpg

41 ms

research-training-lead_0.jpg

research-training-lead_0.jpg

41 ms

3wfn.jpg

3wfn.jpg

40 ms

arrow_copy.png

arrow_copy.png

43 ms

play-button.png

play-button.png

41 ms

research_topics_featured_card_11_22_1.jpg

research_topics_featured_card_11_22_1.jpg

46 ms

highlight-1-cropped.PNG

highlight-1-cropped.PNG

44 ms

highlight-2-cropped.PNG

highlight-2-cropped.PNG

43 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

45 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVc.ttf

47 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVc.ttf

68 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVc.ttf

70 ms

sm.25.html

sm.25.html

31 ms

eso.BRQnzO8v.js

eso.BRQnzO8v.js

58 ms

print.css

print.css

26 ms

Accessibility Review

nida.nih.gov accessibility score

92

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

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

nida.nih.gov best practices score

83

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

nida.nih.gov SEO score

93

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 Nida.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 Nida.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

nida.nih.gov

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