30.3 sec in total
968 ms
27.6 sec
1.8 sec
Visit 51dzw.com now to see the best up-to-date 51DZW content for China and also check out these interesting facts you probably never knew about 51dzw.com
51电子网(51dzw.com)是国内最专业的IC电子交易平台,集IC、电子元器件、二三极管、电子/容管等供求信息,拥有五千万条IC型号和四百多万的电子元器件PDF资料。51电子网立足于电子元件供应商和电子产品生产商服务,为各类电子元件供应商提供发布供应信息平台,也为电子产品生产商提供采平台和自己的产品展示平台。
Visit 51dzw.comWe analyzed 51dzw.com page load time and found that the first response time was 968 ms and then it took 29.3 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.
51dzw.com performance score
name
value
score
weighting
Value3.5 s
34/100
10%
Value7.1 s
5/100
25%
Value11.6 s
5/100
10%
Value60 ms
100/100
30%
Value0.259
47/100
15%
Value4.6 s
81/100
10%
968 ms
6896 ms
1358 ms
688 ms
6511 ms
Our browser made a total of 83 requests to load all elements on the main page. We found that 67% of them (56 requests) were addressed to the original 51dzw.com, 22% (18 requests) were made to Member.51dzw.com and 6% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (15.8 sec) relates to the external source Member.51dzw.com.
Page size can be reduced by 107.6 kB (26%)
413.8 kB
306.2 kB
In fact, the total size of 51dzw.com main page is 413.8 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. 20% of websites need less resources to load. Images take 286.8 kB which makes up the majority of the site volume.
Potential reduce by 86.1 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 86.1 kB or 76% of the original size.
Potential reduce by 12.0 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. 51DZW images are well optimized though.
Potential reduce by 9.5 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. 51dzw.com needs all CSS files to be minified and compressed as it can save up to 9.5 kB or 67% of the original size.
Number of requests can be reduced by 20 (27%)
74
54
The browser has sent 74 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51DZW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.
51dzw.com
968 ms
www.51dzw.com
6896 ms
default.css
1358 ms
same.css
688 ms
jquery.min.js
6511 ms
flash.js
877 ms
MSClass2.9.js
3165 ms
comm.js
1029 ms
showFocusPic.js
437 ms
17791306.js
4153 ms
fx.js
398 ms
login.asp
618 ms
20131123103129985.jpg
8203 ms
2016021610504261425.jpg
3340 ms
qy.jpg
614 ms
2016021610423271381.gif
3777 ms
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4134 ms
2016012917534916116.jpg
5167 ms
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4131 ms
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3613 ms
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4170 ms
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4652 ms
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5059 ms
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4648 ms
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5059 ms
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5172 ms
2015123014222245808.jpg
5690 ms
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15849 ms
2015122511464866928.jpg
5479 ms
2015121819123833051.jpg
8560 ms
2015121615371188093.jpg
12606 ms
sm.jpg
800 ms
rz1.gif
836 ms
rz2.gif
845 ms
rz3.gif
3949 ms
rz4.gif
1040 ms
rz5.gif
1050 ms
20131125210021857.jpg
10050 ms
main_head_bg.jpg
580 ms
lineone.jpg
582 ms
log.jpg
2866 ms
search_ico.jpg
578 ms
search_button.jpg
577 ms
tel_1.jpg
803 ms
menu_children_bg.jpg
829 ms
Buy_sidebar.jpg
1242 ms
h3_line.jpg
1022 ms
linetwo.jpg
1045 ms
jian.jpg
1235 ms
201212261452346345.gif
1236 ms
20134271532823723.gif
1530 ms
brand_h3_bg.jpg
1566 ms
AriesElectronicsLogo.png
1665 ms
20140416164860196019.png
1645 ms
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1653 ms
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2038 ms
RECOMLogo.png
5248 ms
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2055 ms
ico_home.jpg
4482 ms
ico_join.jpg
2094 ms
complaint.jpg
2542 ms
dian_one.jpg
2355 ms
Recommend_User_bg.jpg
2385 ms
dian_two.jpg
2741 ms
long_line.jpg
3656 ms
icon_0.gif
1243 ms
shell_v2.js
871 ms
qy.jpg
2505 ms
button_login.jpg
3166 ms
brand_reg.jpg
3145 ms
bar_ico.jpg
3003 ms
sm.jpg
3314 ms
rz1.gif
3323 ms
rz2.gif
5110 ms
rz4.gif
4743 ms
rz5.gif
3578 ms
logger.js
263 ms
bds_s_v2.js
1088 ms
bdsstyle.css
275 ms
r0.gif
344 ms
rz3.gif
2854 ms
qq.gif
438 ms
51dzw.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.
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
Form elements do not have associated labels
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>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
51dzw.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
51dzw.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
GB2312
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51dzw.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 51dzw.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
51dzw.com
Open Graph description is not detected on the main page of 51DZW. 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: