Tools & Wizards About Us
double-id.com screenshot

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

double-id.com

C7娱乐(中国)有限公司官网

Page Load Speed

3.2 sec in total

First Response

326 ms

Resources Loaded

2.5 sec

Page Rendered

413 ms

double-id.com screenshot

About Website

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

C7娱乐(中国)有限公司官网成立1988年，企业注册资金1.2亿元,总资本22亿元。【请记好发财域名:818988b.com】公司已由初建时的单一销售模式转变成为产品销售、技术支持、售后服务、方案实施、EMC合同能源管理等业务的综合型公司。我公司奉行：务实、严谨、有效。秉承以技术为核心、以质量为生命，竭诚为用户提供优良的、精确匹配生产需要的空压机产品和用心、专业的售后服务。我公司将不断探索为用户提...

Visit double-id.com

Key Findings

We analyzed Double-id.com page load time and found that the first response time was 326 ms and then it took 2.9 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

double-id.com performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value8.3 s

40/100

10%

Network Requests Diagram

double-id.com

326 ms

www.double-id.com

286 ms

529df9a58276c4443722a1873a9f7e7f.css

86 ms

582544d767f31c5bfe7ea952ceca8124.css

168 ms

170cf25102ede76746dd3f1b6efafd75.css

170 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 79% of them (74 requests) were addressed to the original Double-id.com, 15% (14 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (954 ms) belongs to the original domain Double-id.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 92.4 kB (13%)

Content Size

718.4 kB

After Optimization

626.0 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Double-id.com main page is 718.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% 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 632.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 55.2 kB

  • Original 69.0 kB
  • After minification 68.5 kB
  • After compression 13.8 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. 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 55.2 kB or 80% of the original size.

Image Optimization

-6%

Potential reduce by 37.2 kB

  • Original 632.2 kB
  • After minification 595.0 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. Double Id images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 34 (45%)

Requests Now

75

After Optimization

41

  • Images
  • JavaScript
  • CSS

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Double Id. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

double-id.com

double-id.com

326 ms

www.double-id.com

www.double-id.com

286 ms

529df9a58276c4443722a1873a9f7e7f.css

529df9a58276c4443722a1873a9f7e7f.css

86 ms

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582544d767f31c5bfe7ea952ceca8124.css

168 ms

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170cf25102ede76746dd3f1b6efafd75.css

170 ms

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175 ms

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183 ms

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252 ms

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268 ms

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419 ms

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337 ms

css

css

43 ms

css

css

55 ms

jsapi

jsapi

112 ms

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332 ms

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524 ms

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525 ms

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129 ms

ga.js

ga.js

15 ms

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search-go.png

115 ms

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172 ms

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137 ms

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134 ms

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135 ms

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444 ms

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300 ms

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369 ms

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336 ms

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285 ms

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283 ms

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447 ms

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367 ms

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382 ms

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418 ms

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449 ms

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451 ms

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464 ms

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501 ms

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524 ms

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529 ms

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530 ms

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532 ms

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572 ms

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586 ms

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605 ms

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611 ms

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613 ms

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614 ms

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654 ms

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670 ms

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689 ms

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693 ms

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695 ms

logo_double-id_footer.png

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710 ms

__utm.gif

__utm.gif

80 ms

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28 ms

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62 ms

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62 ms

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63 ms

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656 ms

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648 ms

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830 ms

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954 ms

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659 ms

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632 ms

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123 ms

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565 ms

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565 ms

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570 ms

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685 ms

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577 ms

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98 ms

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86 ms

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24 ms

Accessibility Review

double-id.com accessibility score

83

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

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.

Best Practices

double-id.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

double-id.com SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Double-id.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Double-id.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

double-id.com

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