33.7 sec in total
626 ms
31.9 sec
1.2 sec
Welcome to d1cm.com homepage info - get ready to check D 1 Cm best content for China right away, or after learning these important things about d1cm.com
第一工程机械网是集工程机械领域信息交流、产品导购及应用服务于一体的综合行业门户网站。第一工程机械网拥有专业资讯库,工程机械产品导购库,二手工程机械、工程机械租赁、工程机械配件等特色应用平台,我们力求打造工程机械行业有影响力和商业价值的应用服务平台。
Visit d1cm.comWe analyzed D1cm.com page load time and found that the first response time was 626 ms and then it took 33.1 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 were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
d1cm.com performance score
name
value
score
weighting
Value9.7 s
0/100
10%
Value18.8 s
0/100
25%
Value19.9 s
0/100
10%
Value180 ms
92/100
30%
Value0.182
67/100
15%
Value20.2 s
2/100
10%
626 ms
1821 ms
600 ms
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1062 ms
Our browser made a total of 248 requests to load all elements on the main page. We found that 24% of them (60 requests) were addressed to the original D1cm.com, 21% (51 requests) were made to Img.d1cm.com and 15% (38 requests) were made to Ershou.d1cm.com. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Img.d1cm.com.
Page size can be reduced by 720.6 kB (27%)
2.7 MB
2.0 MB
In fact, the total size of D1cm.com main page is 2.7 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. 60% of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.
Potential reduce by 352.9 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 352.9 kB or 82% of the original size.
Potential reduce by 132.6 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. D 1 Cm images are well optimized though.
Potential reduce by 235.1 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 235.1 kB or 59% of the original size.
Number of requests can be reduced by 44 (18%)
240
196
The browser has sent 240 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D 1 Cm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 45 to 1 for JavaScripts and as a result speed up the page load time.
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d1cm.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
<html> element does not have a [lang] attribute
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
Image elements do not have [alt] attributes
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
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
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
d1cm.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
d1cm.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
Tap targets are not sized appropriately
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise D1cm.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 D1cm.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.
d1cm.com
Open Graph description is not detected on the main page of D 1 Cm. 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: