Tools & Wizards About Us
rearviewsys.com screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 47

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

rearviewsys.com

Home

Page Load Speed

4.4 sec in total

First Response

801 ms

Resources Loaded

2.9 sec

Page Rendered

691 ms

rearviewsys.com screenshot

About Website

Click here to check amazing Rearviewsys content. Otherwise, check out these important facts you probably never knew about rearviewsys.com

首页

Visit rearviewsys.com

Key Findings

We analyzed Rearviewsys.com page load time and found that the first response time was 801 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

rearviewsys.com performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

82/100

25%

SI (Speed Index)

Value3.2 s

91/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value1.23

1/100

15%

TTI (Time to Interactive)

Value2.1 s

99/100

10%

Network Requests Diagram

rearviewsys.com

801 ms

www.rearviewsys.com

658 ms

bootstrap.min.css

138 ms

swiper-3.3.1.min.css

203 ms

aos.css

216 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that all of those requests were addressed to Rearviewsys.com and no external sources were called. The less responsive or slowest element that took the longest time to load (944 ms) belongs to the original domain Rearviewsys.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 470.2 kB (24%)

Content Size

2.0 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rearviewsys.com main page is 2.0 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 15.9 kB

  • Original 20.9 kB
  • After minification 20.3 kB
  • After compression 5.0 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 15.9 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 49.4 kB

  • Original 1.4 MB
  • After minification 1.4 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. Rearviewsys images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 147.5 kB

  • Original 210.6 kB
  • After minification 205.2 kB
  • After compression 63.1 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 147.5 kB or 70% of the original size.

CSS Optimization

-85%

Potential reduce by 257.3 kB

  • Original 301.3 kB
  • After minification 286.7 kB
  • After compression 44.0 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. Rearviewsys.com needs all CSS files to be minified and compressed as it can save up to 257.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (36%)

Requests Now

53

After Optimization

34

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rearviewsys. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rearviewsys.com

rearviewsys.com

801 ms

www.rearviewsys.com

www.rearviewsys.com

658 ms

bootstrap.min.css

bootstrap.min.css

138 ms

swiper-3.3.1.min.css

swiper-3.3.1.min.css

203 ms

aos.css

aos.css

216 ms

style.css

style.css

288 ms

jquery.js

jquery.js

356 ms

Site_Common.js

Site_Common.js

222 ms

swiper-3.3.1.jquery.min.js

swiper-3.3.1.jquery.min.js

314 ms

aos.js

aos.js

268 ms

xlx.shuwon.js

xlx.shuwon.js

282 ms

js197.js

js197.js

314 ms

float20907.js

float20907.js

334 ms

logo201905101440422984538.png

logo201905101440422984538.png

182 ms

menu.png

menu.png

188 ms

menu-top.png

menu-top.png

186 ms

ba202003251627160192512.jpg

ba202003251627160192512.jpg

508 ms

ba201908281507594310499.jpg

ba201908281507594310499.jpg

519 ms

ba201908281508224479374.jpg

ba201908281508224479374.jpg

512 ms

banner-l.png

banner-l.png

196 ms

banner-of.png

banner-of.png

199 ms

banner-r.png

banner-r.png

200 ms

720p-ahd-startlight-night-vision-forklift11257202562.jpg

720p-ahd-startlight-night-vision-forklift11257202562.jpg

245 ms

720p-ahd-startlight-night-vision-forklift11257202562.jpg

720p-ahd-startlight-night-vision-forklift11257202562.jpg

286 ms

third-brake-light-backup-camera-for-ford44592233572.jpg

third-brake-light-backup-camera-for-ford44592233572.jpg

381 ms

third-brake-light-backup-camera-for-ford44592233572.jpg

third-brake-light-backup-camera-for-ford44592233572.jpg

263 ms

car-mobile-dvr-1080p-ahd-10-1-inch-recording202004011034269788971.jpg

car-mobile-dvr-1080p-ahd-10-1-inch-recording202004011034269788971.jpg

376 ms

car-mobile-dvr-1080p-ahd-10-1-inch-recording202004011034269788971.jpg

car-mobile-dvr-1080p-ahd-10-1-inch-recording202004011034269788971.jpg

406 ms

8-channel-1080p-ahd-vehicle-mobile-dvr32394533422.jpg

8-channel-1080p-ahd-vehicle-mobile-dvr32394533422.jpg

398 ms

8-channel-1080p-ahd-vehicle-mobile-dvr32394533422.jpg

8-channel-1080p-ahd-vehicle-mobile-dvr32394533422.jpg

430 ms

1080p-mobile-dvr-remote-monitoring-360-camera202001030912531579052.png

1080p-mobile-dvr-remote-monitoring-360-camera202001030912531579052.png

505 ms

1080p-mobile-dvr-remote-monitoring-360-camera202001030912531579052.png

1080p-mobile-dvr-remote-monitoring-360-camera202001030912531579052.png

544 ms

night-vision-mini-car-backup-camera201912261500204797731.jpg

night-vision-mini-car-backup-camera201912261500204797731.jpg

510 ms

night-vision-mini-car-backup-camera201912261500204797731.jpg

night-vision-mini-car-backup-camera201912261500204797731.jpg

543 ms

license-plate-backup-camera-ev-101201912241019501914010.jpg

license-plate-backup-camera-ev-101201912241019501914010.jpg

543 ms

license-plate-backup-camera-ev-101201912241019501914010.jpg

license-plate-backup-camera-ev-101201912241019501914010.jpg

580 ms

dual-lens-rearview-waterproof-camera21219177890.jpg

dual-lens-rearview-waterproof-camera21219177890.jpg

581 ms

dual-lens-rearview-waterproof-camera21219177890.jpg

dual-lens-rearview-waterproof-camera21219177890.jpg

580 ms

7-inch-ahd-quad-view-monitor-built-in-dvr28011397494.jpg

7-inch-ahd-quad-view-monitor-built-in-dvr28011397494.jpg

628 ms

7-inch-ahd-quad-view-monitor-built-in-dvr28011397494.jpg

7-inch-ahd-quad-view-monitor-built-in-dvr28011397494.jpg

632 ms

201905071621585135294.jpg

201905071621585135294.jpg

944 ms

201905101144464237903.jpg

201905101144464237903.jpg

689 ms

201905101147064985950.jpg

201905101147064985950.jpg

631 ms

201905101304437291574.jpg

201905101304437291574.jpg

630 ms

footer-wx.png

footer-wx.png

657 ms

erwei477477.jpg

erwei477477.jpg

662 ms

footer-dz.png

footer-dz.png

678 ms

s

s

675 ms

fd_img.png

fd_img.png

588 ms

online.png

online.png

581 ms

tel.png

tel.png

588 ms

email.png

email.png

572 ms

skype.png

skype.png

624 ms

wechat.png

wechat.png

624 ms

top.png

top.png

580 ms

Accessibility Review

rearviewsys.com accessibility score

47

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

rearviewsys.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rearviewsys.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rearviewsys.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Rearviewsys.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

rearviewsys.com

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