Tools & Wizards About Us
jenningschevrolet.com screenshot

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

jenningschevrolet.com

New and Used Cars for Sale glenview, IL | Chevrolet Dealership | Jennings Chevrolet

Page Load Speed

21.4 sec in total

First Response

43 ms

Resources Loaded

20.6 sec

Page Rendered

719 ms

jenningschevrolet.com screenshot

About Website

Click here to check amazing Jennings Chevrolet content for United States. Otherwise, check out these important facts you probably never knew about jenningschevrolet.com

Whether you are looking for a new Chevrolet vehicle or our various used cars for sale at Jennings Chevrolet, we have you covered! Drivers from Glenview to Evanston turn to us when shopping for their n...

Visit jenningschevrolet.com

Key Findings

We analyzed Jenningschevrolet.com page load time and found that the first response time was 43 ms and then it took 21.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

jenningschevrolet.com performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value15.4 s

0/100

10%

TBT (Total Blocking Time)

Value5,400 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.112

86/100

15%

TTI (Time to Interactive)

Value38.9 s

0/100

10%

Network Requests Diagram

www.jenningschevrolet.com

43 ms

dotagging.js

35 ms

dealerOnTrack.min.js

9 ms

gmGlobalEvents.min.js

8 ms

5124.js

196 ms

Our browser made a total of 127 requests to load all elements on the main page. We found that 57% of them (73 requests) were addressed to the original Jenningschevrolet.com, 5% (6 requests) were made to Cdn.dlron.us and 4% (5 requests) were made to Dpm.demdex.net. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source Static.ed.edmunds-media.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.8 MB (20%)

Content Size

9.2 MB

After Optimization

7.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jenningschevrolet.com main page is 9.2 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. 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 6.9 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 485.5 kB

  • Original 576.2 kB
  • After minification 574.2 kB
  • After compression 90.7 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 485.5 kB or 84% of the original size.

Image Optimization

-1%

Potential reduce by 51.8 kB

  • Original 6.9 MB
  • After minification 6.9 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. Jennings Chevrolet images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 1.3 MB

  • Original 1.7 MB
  • After minification 1.7 MB
  • After compression 434.8 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 1.3 MB or 75% of the original size.

CSS Optimization

-36%

Potential reduce by 702 B

  • Original 1.9 kB
  • After minification 1.9 kB
  • After compression 1.2 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. Jenningschevrolet.com needs all CSS files to be minified and compressed as it can save up to 702 B or 36% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (50%)

Requests Now

111

After Optimization

56

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 111 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jennings Chevrolet. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 51 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.jenningschevrolet.com

www.jenningschevrolet.com

43 ms

dotagging.js

dotagging.js

35 ms

dealerOnTrack.min.js

dealerOnTrack.min.js

9 ms

gmGlobalEvents.min.js

gmGlobalEvents.min.js

8 ms

5124.js

5124.js

196 ms

slick.css

slick.css

6 ms

slick-theme.css

slick-theme.css

10 ms

slick.min.js

slick.min.js

21 ms

jquery.min.js

jquery.min.js

22 ms

ua-parser.min.js

ua-parser.min.js

21 ms

dealeron.js

dealeron.js

21 ms

dealeron.static.min.js

dealeron.static.min.js

21 ms

bootstrap.min.js

bootstrap.min.js

22 ms

userAgent-detection.min.js

userAgent-detection.min.js

23 ms

modernizr.min.js

modernizr.min.js

25 ms

jquery.validate.min.js

jquery.validate.min.js

26 ms

dealerOnLeadsBundle.js

dealerOnLeadsBundle.js

26 ms

locationSortInjection.min.js

locationSortInjection.min.js

25 ms

do_utility.min.js

do_utility.min.js

25 ms

formPhoneUtility.min.js

formPhoneUtility.min.js

27 ms

coreBundle.js

coreBundle.js

171 ms

navigation.min.js

navigation.min.js

171 ms

bannerManager.min.js

bannerManager.min.js

167 ms

homepageSearchWidgetCosmosBundle.js

homepageSearchWidgetCosmosBundle.js

172 ms

lazyLoadHomepage.min.js

lazyLoadHomepage.min.js

170 ms

signals.js

signals.js

263 ms

personalization.js

personalization.js

198 ms

analytics.min.js

analytics.min.js

157 ms

js

js

327 ms

launch-ENb27258d35f6e492e9b587d6ef2aef674.min.js

launch-ENb27258d35f6e492e9b587d6ef2aef674.min.js

325 ms

fbevents.js

fbevents.js

260 ms

gtm.js

gtm.js

469 ms

gtm.js

gtm.js

472 ms

embed

embed

441 ms

Chevrolet.png

Chevrolet.png

42 ms

logo.png

logo.png

53 ms

BBB_logo.png

BBB_logo.png

53 ms

bgVideo2022.jpg

bgVideo2022.jpg

135 ms

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_CQ%20LEASE_21%20MARKETS_1920x600.jpg

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_CQ%20LEASE_21%20MARKETS_1920x600.jpg

180 ms

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_CQ%20LEASE_21%20MARKETS_600x400.jpg

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_CQ%20LEASE_21%20MARKETS_600x400.jpg

134 ms

3003_NG%20Traverse_May%20Launch_1920x600.jpg

3003_NG%20Traverse_May%20Launch_1920x600.jpg

354 ms

3003_NG%20Traverse_May%20Launch_600x400.jpg

3003_NG%20Traverse_May%20Launch_600x400.jpg

139 ms

01_MAY_2024%20CHEVY%20SILVERADO_APR_TCA_TA_BELOW%20MSRP_LE_v2_1920x600.jpeg

01_MAY_2024%20CHEVY%20SILVERADO_APR_TCA_TA_BELOW%20MSRP_LE_v2_1920x600.jpeg

296 ms

01_MAY_2024%20CHEVY%20SILVERADO_APR_TCA_TA_BELOW%20MSRP_LE_v2_600x400.jpeg

01_MAY_2024%20CHEVY%20SILVERADO_APR_TCA_TA_BELOW%20MSRP_LE_v2_600x400.jpeg

292 ms

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_LEASE_NATIONAL_1920x600.jpg

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_LEASE_NATIONAL_1920x600.jpg

325 ms

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_LEASE_NATIONAL_600x400.jpg

02_MAY_2024%20CHEVY%20BLAZER%20EV%202LT_LEASE_NATIONAL_600x400.jpg

295 ms

03_MAY_MULTILINE_SPRING%20INTO%20ADVENTURE_APR_DEFERRAL_NATIONAL_1920x600.jpeg

03_MAY_MULTILINE_SPRING%20INTO%20ADVENTURE_APR_DEFERRAL_NATIONAL_1920x600.jpeg

444 ms

03_MAY_MULTILINE_SPRING%20INTO%20ADVENTURE_APR_DEFERRAL_NATIONAL_600x400.jpeg

03_MAY_MULTILINE_SPRING%20INTO%20ADVENTURE_APR_DEFERRAL_NATIONAL_600x400.jpeg

326 ms

04_May_Blazer%20EV_Costco_National_1920x600.jpg

04_May_Blazer%20EV_Costco_National_1920x600.jpg

527 ms

04_May_Blazer%20EV_Costco_National_600x400.jpg

04_May_Blazer%20EV_Costco_National_600x400.jpg

324 ms

79_NATIONAL_MARCH_2024_CHEVY%20CS_SPRING%20EVENT%20TIRE%20RANGE_V2_1920x600.jpg

79_NATIONAL_MARCH_2024_CHEVY%20CS_SPRING%20EVENT%20TIRE%20RANGE_V2_1920x600.jpg

527 ms

Equinox_1920.jpg

Equinox_1920.jpg

535 ms

Traverse_1920.jpg

Traverse_1920.jpg

541 ms

Trax_1920.jpg

Trax_1920.jpg

529 ms

USO_New.png

USO_New.png

529 ms

946653memorialdayheadersales.jpg

946653memorialdayheadersales.jpg

557 ms

2024_Trax.png

2024_Trax.png

927 ms

cc_2024CHC110091_01_320_GXD.png

cc_2024CHC110091_01_320_GXD.png

542 ms

cc_2024CHC020053_01_320_GJV.png

cc_2024CHC020053_01_320_GJV.png

542 ms

cc_2024CHC060070_01_320_GKZ.png

cc_2024CHC060070_01_320_GKZ.png

555 ms

cc_2024CHS320018_01_320_GVR.png

cc_2024CHS320018_01_320_GVR.png

567 ms

cc_2024CHS150026_01_320_GXN.png

cc_2024CHS150026_01_320_GXN.png

562 ms

trailblazer.png

trailblazer.png

570 ms

cc_2024CHS090008_01_320_GLY.png

cc_2024CHS090008_01_320_GLY.png

569 ms

3401.js

3401.js

130 ms

Roboto-Regular.woff

Roboto-Regular.woff

135 ms

Roboto-Medium.woff

Roboto-Medium.woff

283 ms

Roboto-Bold.woff

Roboto-Bold.woff

260 ms

cc_2024CHS290003_01_320_GB8.png

cc_2024CHS290003_01_320_GB8.png

561 ms

cc_2024CHS110118_01_320_G6N.png

cc_2024CHS110118_01_320_G6N.png

559 ms

cc_2024CHS270080_01_320_GLU.png

cc_2024CHS270080_01_320_GLU.png

568 ms

t.js

t.js

162 ms

partnermetrics.js

partnermetrics.js

253 ms

acsb.js

acsb.js

266 ms

dealeron.runtime.js

dealeron.runtime.js

551 ms

gtm.js

gtm.js

328 ms

colorado.png

colorado.png

616 ms

LouisRegular.woff

LouisRegular.woff

148 ms

Roboto-Black.woff

Roboto-Black.woff

263 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

263 ms

gtm.js

gtm.js

290 ms

05165a22-187b-4f86-8dde-a065ad720464

05165a22-187b-4f86-8dde-a065ad720464

258 ms

eas.js

eas.js

287 ms

cc_2024CHT270018_01_320_GXP.png

cc_2024CHT270018_01_320_GXP.png

541 ms

linkid.js

linkid.js

277 ms

cc_2024CHT300026_01_320_GNT.png

cc_2024CHT300026_01_320_GNT.png

531 ms

cc_2024CHT470012_01_320_GXD.png

cc_2024CHT470012_01_320_GXD.png

536 ms

cc_2024CHV330044_01_320_GAN.png

cc_2024CHV330044_01_320_GAN.png

535 ms

2024_Silverado_Jennings_.png

2024_Silverado_Jennings_.png

972 ms

www.jenningschevrolet.com.json

www.jenningschevrolet.com.json

157 ms

2024_Blazer_EV_Jennings_.png

2024_Blazer_EV_Jennings_.png

1015 ms

model-silverado1500.png

model-silverado1500.png

581 ms

model-silverado1500.png

model-silverado1500.png

544 ms

id

id

260 ms

AppMeasurement.min.js

AppMeasurement.min.js

58 ms

AppMeasurement_Module_ActivityMap.min.js

AppMeasurement_Module_ActivityMap.min.js

62 ms

AppMeasurement_Module_AudienceManagement.min.js

AppMeasurement_Module_AudienceManagement.min.js

89 ms

recordMetricsData.action

recordMetricsData.action

266 ms

bg-service-v2.jpg

bg-service-v2.jpg

426 ms

acsb.js

acsb.js

273 ms

bg-about-v2.jpg

bg-about-v2.jpg

459 ms

edw-lib-0.0.2-min.js

edw-lib-0.0.2-min.js

20052 ms

chevy-tagline-together.png

chevy-tagline-together.png

403 ms

DealerOn_darkgray.png

DealerOn_darkgray.png

397 ms

edw_partner.cgi

edw_partner.cgi

20038 ms

collect

collect

110 ms

collect

collect

228 ms

js

js

247 ms

tp2

tp2

199 ms

bat.js

bat.js

129 ms

number-changer.js

number-changer.js

132 ms

getspecifications.php

getspecifications.php

124 ms

dest5.html

dest5.html

55 ms

conversion_async.js

conversion_async.js

106 ms

ga-audiences

ga-audiences

84 ms

componentManager.js

componentManager.js

132 ms

logManager.js

logManager.js

133 ms

getnumdata.js

getnumdata.js

13 ms

ibs:dpid=21&dpuuid=214540604893003507164

ibs:dpid=21&dpuuid=214540604893003507164

5 ms

s58186560999602

s58186560999602

54 ms

pixel

pixel

29 ms

pixel

pixel

15 ms

ibs:dpid=771&dpuuid=CAESENKBunTs85BS4Io1WzYo2bY&google_cver=1

ibs:dpid=771&dpuuid=CAESENKBunTs85BS4Io1WzYo2bY&google_cver=1

4 ms

generic

generic

15 ms

generic

generic

4 ms

ibs:dpid=903&dpuuid=5f292b12-029a-474b-b4c7-ff0201832715

ibs:dpid=903&dpuuid=5f292b12-029a-474b-b4c7-ff0201832715

15 ms

ibs:dpid=129099&dpuuid=2847976fc83d448a91731d17f7569c79

ibs:dpid=129099&dpuuid=2847976fc83d448a91731d17f7569c79

4 ms

Accessibility Review

jenningschevrolet.com accessibility score

64

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]s are not contained by their required parent element

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

[id] attributes on active, focusable elements are not unique

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

jenningschevrolet.com 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

jenningschevrolet.com SEO score

85

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 Jenningschevrolet.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 Jenningschevrolet.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

jenningschevrolet.com

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