Tools & Wizards About Us
jacobsvehiclesystems.com screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

jacobsvehiclesystems.com

Global Leader in Engine Braking | Jacobs Vehicle Systems

Page Load Speed

2.8 sec in total

First Response

92 ms

Resources Loaded

2.5 sec

Page Rendered

213 ms

jacobsvehiclesystems.com screenshot

About Website

Welcome to jacobsvehiclesystems.com homepage info - get ready to check Jacobs Vehicle Systems best content for United States right away, or after learning these important things about jacobsvehiclesystems.com

As pioneers in engine braking and valve actuation technologies, we work with trucking OEMs worldwide. Since 1961, we've delivered high performance solutions.

Visit jacobsvehiclesystems.com

Key Findings

We analyzed Jacobsvehiclesystems.com page load time and found that the first response time was 92 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

jacobsvehiclesystems.com performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value6.6 s

38/100

10%

TBT (Total Blocking Time)

Value20,230 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.09

92/100

15%

TTI (Time to Interactive)

Value31.0 s

0/100

10%

Network Requests Diagram

jacobsvehiclesystems.com

92 ms

www.jacobsvehiclesystems.com

1082 ms

4f0f7a7b0784b386aeb77405c62dd2a8_1458093615.css

85 ms

jquery.min.js

22 ms

addthis_widget.js

11 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 79% of them (53 requests) were addressed to the original Jacobsvehiclesystems.com, 3% (2 requests) were made to S7.addthis.com and 3% (2 requests) were made to Trk.etrigue.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Jacobsvehiclesystems.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 422.9 kB (36%)

Content Size

1.2 MB

After Optimization

755.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jacobsvehiclesystems.com main page is 1.2 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. 40% of websites need less resources to load. Images take 557.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 98.3 kB

  • Original 127.8 kB
  • After minification 124.3 kB
  • After compression 29.5 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 98.3 kB or 77% of the original size.

Image Optimization

-7%

Potential reduce by 36.5 kB

  • Original 557.0 kB
  • After minification 520.5 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. Jacobs Vehicle Systems images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 246.0 kB

  • Original 440.6 kB
  • After minification 440.3 kB
  • After compression 194.6 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 246.0 kB or 56% of the original size.

CSS Optimization

-80%

Potential reduce by 42.0 kB

  • Original 52.7 kB
  • After minification 51.8 kB
  • After compression 10.7 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. Jacobsvehiclesystems.com needs all CSS files to be minified and compressed as it can save up to 42.0 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (29%)

Requests Now

63

After Optimization

45

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jacobs Vehicle Systems. 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 as a result speed up the page load time.

Network Requests Diagram

jacobsvehiclesystems.com

jacobsvehiclesystems.com

92 ms

www.jacobsvehiclesystems.com

www.jacobsvehiclesystems.com

1082 ms

4f0f7a7b0784b386aeb77405c62dd2a8_1458093615.css

4f0f7a7b0784b386aeb77405c62dd2a8_1458093615.css

85 ms

jquery.min.js

jquery.min.js

22 ms

addthis_widget.js

addthis_widget.js

11 ms

iframeAPI.js

iframeAPI.js

42 ms

17e339671a13df3dc1699c89bc85eff0_1458093617.js

17e339671a13df3dc1699c89bc85eff0_1458093617.js

170 ms

all.js

all.js

91 ms

etriguelive.js

etriguelive.js

203 ms

co-home-50yrs.png

co-home-50yrs.png

144 ms

logo-1.png

logo-1.png

143 ms

dn-1.png

dn-1.png

142 ms

search.png

search.png

140 ms

global_markets.jpg

global_markets.jpg

144 ms

r-1.gif

r-1.gif

141 ms

technology.jpg

technology.jpg

145 ms

parts_service_support.jpg

parts_service_support.jpg

190 ms

news_events.jpg

news_events.jpg

146 ms

about_us.jpg

about_us.jpg

194 ms

suppliers.jpg

suppliers.jpg

194 ms

jvs_precision_image_hp.jpg

jvs_precision_image_hp.jpg

197 ms

jvs_partnership_image_hp.jpg

jvs_partnership_image_hp.jpg

266 ms

jvs_productivity_image_hp.jpg

jvs_productivity_image_hp.jpg

253 ms

jvs_safety_image_hp.jpg

jvs_safety_image_hp.jpg

273 ms

c_c.png

c_c.png

321 ms

cnhtc.png

cnhtc.png

312 ms

cummins.png

cummins.png

358 ms

daf.png

daf.png

363 ms

daimler.png

daimler.png

393 ms

DET_chrome_wht.jpg

DET_chrome_wht.jpg

402 ms

deutz.png

deutz.png

433 ms

dfm.png

dfm.png

443 ms

doosan.png

doosan.png

474 ms

faw.png

faw.png

484 ms

foton.png

foton.png

530 ms

fuso.png

fuso.png

526 ms

hino.png

hino.png

565 ms

hyundai_horz.png

hyundai_horz.png

569 ms

navistar.png

navistar.png

605 ms

Paccar.png

Paccar.png

610 ms

analytics.js

analytics.js

128 ms

300lo.json

300lo.json

46 ms

sh.8e5f85691f9aaa082472a194.html

sh.8e5f85691f9aaa082472a194.html

52 ms

sdec.png

sdec.png

514 ms

tognum.png

tognum.png

533 ms

BW%20ISUZU%206UZ%20Jpeg%202%20Nov%2017%202015.jpg

BW%20ISUZU%206UZ%20Jpeg%202%20Nov%2017%202015.jpg

804 ms

MX-11_Soft_Studio_600dpi.jpg

MX-11_Soft_Studio_600dpi.jpg

809 ms

72.png

72.png

903 ms

addthis.png

addthis.png

842 ms

sm.png

sm.png

863 ms

prev-2.png

prev-2.png

881 ms

77 ms

collect

collect

27 ms

next-2.png

next-2.png

875 ms

xd_arbiter.php

xd_arbiter.php

26 ms

xd_arbiter.php

xd_arbiter.php

30 ms

dn-2.png

dn-2.png

873 ms

nav1-active.png

nav1-active.png

896 ms

nav1.png

nav1.png

891 ms

dn-3.png

dn-3.png

895 ms

track.php

track.php

195 ms

pixel

pixel

20 ms

pixel

pixel

18 ms

jvs_precision_image_hp.jpg

jvs_precision_image_hp.jpg

190 ms

jvs_partnership_image_hp.jpg

jvs_partnership_image_hp.jpg

91 ms

jvs_safety_image_hp.jpg

jvs_safety_image_hp.jpg

23 ms

jvs_productivity_image_hp.jpg

jvs_productivity_image_hp.jpg

57 ms

Accessibility Review

jacobsvehiclesystems.com accessibility score

85

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

jacobsvehiclesystems.com 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

jacobsvehiclesystems.com SEO score

79

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

High

Image elements do not have [alt] attributes

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 Jacobsvehiclesystems.com 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 Jacobsvehiclesystems.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

jacobsvehiclesystems.com

Open Graph description is not detected on the main page of Jacobs Vehicle Systems. 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: