Tools & Wizards About Us

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

overdrivedm.com

腾竞体育-（中国）科技有限公司官网

Page Load Speed

32.1 sec in total

First Response

908 ms

Resources Loaded

30.8 sec

Page Rendered

400 ms

About Website

Visit overdrivedm.com now to see the best up-to-date Overdrivedm content and also check out these interesting facts you probably never knew about overdrivedm.com

腾竞体育成立于1988年04注册资23（mm推荐发财）电器有限公司成立于1999年，注册资本4470.588万元，是一家致力于交通行业整体解决方案的国家高新技术企业，位于南京市秦淮区永丰大道9号D栋。集团股份有限公司前身为宁波经济技术开发区联合发展有限总公司，成立于1988年5月。（）是中央直接管理的国有重要骨干企业，发源于1952年8月7日成立的第一机械工业部，由原机械工业部70多家科研设计院所...

Visit overdrivedm.com

Key Findings

We analyzed Overdrivedm.com page load time and found that the first response time was 908 ms and then it took 31.2 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

overdrivedm.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value13.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value21.0 s

0/100

25%

SI (Speed Index)

Value26.0 s

0/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value29.1 s

0/100

10%

Network Requests Diagram

overdrivedm.com

908 ms

overdrivedm.com

804 ms

www.overdrivedm.com

407 ms

www.overdrivedm.com

4427 ms

hth.js

2631 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 50% of them (38 requests) were addressed to the original Overdrivedm.com, 32% (24 requests) were made to Cos-www.overdrivedm.com and 16% (12 requests) were made to Jifa001.com. The less responsive or slowest element that took the longest time to load (19.7 sec) relates to the external source Jifa001.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (54%)

Content Size

2.2 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Overdrivedm.com main page is 2.2 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. 35% of websites need less resources to load. Images take 798.1 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 582.0 kB

  • Original 667.3 kB
  • After minification 666.4 kB
  • After compression 85.3 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 582.0 kB or 87% of the original size.

Image Optimization

-12%

Potential reduce by 96.5 kB

  • Original 798.1 kB
  • After minification 701.6 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. Obviously, Overdrivedm needs image optimization as it can save up to 96.5 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-69%

Potential reduce by 513.2 kB

  • Original 743.9 kB
  • After minification 736.0 kB
  • After compression 230.8 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 513.2 kB or 69% of the original size.

CSS Optimization

-28%

Potential reduce by 8.4 kB

  • Original 30.4 kB
  • After minification 30.4 kB
  • After compression 21.9 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. Overdrivedm.com needs all CSS files to be minified and compressed as it can save up to 8.4 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (50%)

Requests Now

46

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Overdrivedm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

overdrivedm.com accessibility score

68

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

overdrivedm.com best practices score

75

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

overdrivedm.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

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Overdrivedm.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Overdrivedm.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

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