Tools & Wizards About Us
nhtsa.gov screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

nhtsa.gov

NHTSA | National Highway Traffic Safety Administration

Page Load Speed

6.3 sec in total

First Response

92 ms

Resources Loaded

5.6 sec

Page Rendered

546 ms

nhtsa.gov screenshot

About Website

Visit nhtsa.gov now to see the best up-to-date NHTSA content for United States and also check out these interesting facts you probably never knew about nhtsa.gov

Get resources and info about staying safe on America’s roads. And, find out if there’s a recall on your car or how to report a vehicle safety problem.

Visit nhtsa.gov

Key Findings

We analyzed Nhtsa.gov page load time and found that the first response time was 92 ms and then it took 6.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

nhtsa.gov performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value28.2 s

0/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value1,530 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.067

97/100

15%

TTI (Time to Interactive)

Value26.3 s

0/100

10%

Network Requests Diagram

www.nhtsa.gov

92 ms

css_9oxZ8t0fy-1Dux9vWKzBigjfI5Z8rYYAfELfD9v0cLU.css

46 ms

css

49 ms

js

146 ms

Universal-Federated-Analytics-Min.js

31 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 23% of them (15 requests) were addressed to the original Nhtsa.gov, 14% (9 requests) were made to Fonts.gstatic.com and 12% (8 requests) were made to Lpcdn.lpsnmedia.net. The less responsive or slowest element that took the longest time to load (4.9 sec) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (22%)

Content Size

5.5 MB

After Optimization

4.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nhtsa.gov main page is 5.5 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. 80% 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 3.5 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 72.9 kB

  • Original 96.7 kB
  • After minification 84.7 kB
  • After compression 23.8 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. This page needs HTML code to be minified as it can gain 12.0 kB, which is 12% 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 72.9 kB or 75% of the original size.

Image Optimization

-6%

Potential reduce by 200.0 kB

  • Original 3.5 MB
  • After minification 3.3 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. NHTSA images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 757.0 kB

  • Original 1.7 MB
  • After minification 1.7 MB
  • After compression 916.4 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 757.0 kB or 45% of the original size.

CSS Optimization

-64%

Potential reduce by 166.6 kB

  • Original 258.5 kB
  • After minification 228.9 kB
  • After compression 91.9 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. Nhtsa.gov needs all CSS files to be minified and compressed as it can save up to 166.6 kB or 64% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (70%)

Requests Now

53

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NHTSA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.nhtsa.gov

www.nhtsa.gov

92 ms

css_9oxZ8t0fy-1Dux9vWKzBigjfI5Z8rYYAfELfD9v0cLU.css

css_9oxZ8t0fy-1Dux9vWKzBigjfI5Z8rYYAfELfD9v0cLU.css

46 ms

css

css

49 ms

js

js

146 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

31 ms

core-225278f5cd50edcdbf80fb5653ace4d1.css

core-225278f5cd50edcdbf80fb5653ace4d1.css

43 ms

site-e9d994bb22efc0f36c7560d7f9eb2467.css

site-e9d994bb22efc0f36c7560d7f9eb2467.css

62 ms

cse.js

cse.js

146 ms

jquery-2.2.4.min.js

jquery-2.2.4.min.js

35 ms

js_vadjb8OjrcUtWxhPmlCwXGwdzSlMNN9qoUpM7OsfACs.js

js_vadjb8OjrcUtWxhPmlCwXGwdzSlMNN9qoUpM7OsfACs.js

185 ms

bundle-d4a4cd3ecc6270091db6.js

bundle-d4a4cd3ecc6270091db6.js

180 ms

gtm.js

gtm.js

137 ms

js

js

128 ms

analytics.js

analytics.js

127 ms

Untitled%20design%20%2822%29.png

Untitled%20design%20%2822%29.png

811 ms

13006-shareroad_homepagehero.jpg

13006-shareroad_homepagehero.jpg

355 ms

icon-trending.png

icon-trending.png

355 ms

14927c-blue_1400x1400_safercarapp_logo_100620_v1.jpg

14927c-blue_1400x1400_safercarapp_logo_100620_v1.jpg

462 ms

adas-main-image-04-553x713.jpg

adas-main-image-04-553x713.jpg

356 ms

bg-pattern-recalls.png

bg-pattern-recalls.png

462 ms

I-Come-Correct-video-text.jpg

I-Come-Correct-video-text.jpg

808 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

344 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

454 ms

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

478 ms

KFOkCnqEu92Fr1MmgVxIIzc.ttf

KFOkCnqEu92Fr1MmgVxIIzc.ttf

477 ms

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

477 ms

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

475 ms

cse_element__en.js

cse_element__en.js

489 ms

default+en.css

default+en.css

681 ms

default.css

default.css

683 ms

js

js

4858 ms

collect

collect

264 ms

icomoon.ttf

icomoon.ttf

180 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

152 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

131 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

151 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjo0oSmb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjo0oSmb2Rm.ttf

151 ms

js

js

136 ms

ktxevents.v1.js

ktxevents.v1.js

319 ms

Universal-Federated-Analytics-Min.js

Universal-Federated-Analytics-Min.js

26 ms

tag.js

tag.js

358 ms

async-ads.js

async-ads.js

126 ms

branding.png

branding.png

118 ms

clear.png

clear.png

50 ms

amzn.js

amzn.js

74 ms

.jsonp

.jsonp

51 ms

tp2

tp2

8 ms

33 ms

ui-framework.js

ui-framework.js

70 ms

surveylogicinstance.min.js

surveylogicinstance.min.js

71 ms

zones

zones

139 ms

mTag.js

mTag.js

46 ms

v1

v1

16 ms

bounce

bounce

15 ms

storage.secure.min.js

storage.secure.min.js

41 ms

storage.secure.min.html

storage.secure.min.html

92 ms

desktopEmbedded.js

desktopEmbedded.js

19 ms

10024689

10024689

170 ms

overlay.js

overlay.js

5 ms

UISuite.js

UISuite.js

4 ms

284

284

7 ms

10024689

10024689

15 ms

69487512

69487512

48 ms

10024689

10024689

6 ms

live-chat.png

live-chat.png

4 ms

10024689

10024689

15 ms

Accessibility Review

nhtsa.gov accessibility score

73

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role] values are not valid

High

[aria-*] attributes do not have valid values

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

nhtsa.gov best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

nhtsa.gov SEO score

84

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

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

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 Nhtsa.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 Nhtsa.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

nhtsa.gov

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