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Jb51.net 脚本之家_www.jb51.net

脚本之家是国内专业的网站建设资源、脚本编程学习类网站,提供asp、php、asp.net、javascript、jquery、vbscript、dos批处理、网页制作、网络编程、网站建设等编程资料。

Need help with your SEO?
Online Status
Offline

Server IP address resolved: No
Http response code: None
Last Checked: 09/16/2019

Jb51.net receives about five hundred thousand unique visitors and eight hundred thousand pageviews per day. The estimated value of jb51.net is ten million USD. Each unique visitor makes about 1.56 pageviews on average.

Over the time jb51.net has been ranked as high as 294 in the world, while most of its traffic comes from China, where it reached as high as 106 position.

It’s good for jb51.net that their server is also located in China, as that enables the majority of their visitors to benefit from a much faster page load time.

At the time of the last check (September 22, 2019) jb51.net has an invalid SSL certificate.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust jb51.net is quite a safe domain.

Mobile-Friendly test indicates that jb51.net is well optimized for mobile and tablet devices, however website page loading time could be improved.

Global Rank
836
Average Load Time
3.20sec
Links In Count
2,001
Website Value
$10.9 M
Overview
Last Updated: 09/22/2019
Overall result - "jb51.net" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "jb51.net" OK.

Norton ConnectSafe evaluates jb51.net for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 01/30/2019
GSS "jb51.net" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "jb51.net".
"jb51.net" is not a phishing page.
"jb51.net" does not install unwanted software.
"jb51.net" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "jb51.net" OK.

McAfee assesses jb51.net for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze jb51.net for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "jb51.net" VERY GOOD.

The WOT calculates reputation of the jb51.net. This reputation system receives ratings from users and information from third-party sources, assesses the jb51.net for safety features and confirms, whether jb51.net is suitable for children.

SSL Information
WARNING! Certificate download error. Previous scan results are shown below.
Domain Unknown
Issuer Unknown
Algorithm Unknown
Valid form Unknown
Expiration Unknown
Signed No information
Additional Domains
Server Location
Xuzhou
Jiangsu
China
ASN Information

ASN ID: 4134
ASN Title: CHINANET-BACKBONE No.31,Jin-rong Street, CN

Last Update: 05/29/2019

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS4134'

% Abuse contact for 'AS4134' is 'anti-spam@ns.chinanet.cn.net'

aut-num: AS4134
as-name: CHINANET-BACKBONE
descr: No.31,Jin-rong Street
descr: Beijing
descr: 100032
country: CN
remarks: for backbone of chinanet
admin-c: CH93-AP
tech-c: CH93-AP
mnt-by: MAINT-CHINANET
mnt-irt: IRT-CHINANET-CN
mnt-routes: MAINT-CHINANET
last-modified: 2016-10-17T00:30:13Z
source: APNIC

irt: IRT-CHINANET-CN
address: No.31 ,jingrong street,beijing
address: 100032
e-mail: anti-spam@ns.chinanet.cn.net
abuse-mailbox: anti-spam@ns.chinanet.cn.net
admin-c: CH93-AP
tech-c: CH93-AP
auth: # Filtered
mnt-by: MAINT-CHINANET
last-modified: 2010-11-15T00:31:55Z
source: APNIC

person: Chinanet Hostmaster
nic-hdl: CH93-AP
e-mail: anti-spam@ns.chinanet.cn.net
address: No.31 ,jingrong street,beijing
address: 100032
phone: +86-10-58501724
fax-no: +86-10-58501724
country: CN
mnt-by: MAINT-CHINANET
last-modified: 2014-02-27T03:37:38Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

HTML Metatags
Title
脚本之家_www.jb51.net
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
脚本之家是国内专业的网站建设资源、脚本编程学习类网站,提供asp、php、asp.net、javascript、jquery、vbscript、dos批处理、网页制作、网络编程、网站建设等编程资料。
The description has optimal length. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Encoding
GB2312
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
Language not found
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Line 343, ...<img src="//files.jb51.net/do/uploads/litimg/181123/09414J91b8.jp...
Line 346, ...<img src="//files.jb51.net/do/uploads/litimg/181120/1014512HO0.jp...
Line 351, ...<img src="//files.jb51.net/do/uploads/litimg/181119/094J5494Y8.jp...
Line 356, ...<img src="//files.jb51.net/file_images/article/201811/20181114191...
Line 361, ...<img src="//files.jb51.net/do/uploads/litimg/181107/_1I62cF.jpg">...
Line 366, ...<img src="//files.jb51.net/file_images/article/201811/20181107154...
Line 535, ...<img src="//files.jb51.net/do/uploads/allimg/201803/010P0000C064K...
Line 535, ...<img src="//files.jb51.net/do/uploads/allimg/201803/010P00003F323...
Line 535, ...<img src="//files.jb51.net/do/uploads/allimg/201803/010P0000B094W...
Line 543, ...<img src="//files.jb51.net/file_images/article/201709/20170927162...
Line 544, ...<img src="//files.jb51.net/do/uploads/allimg/201705/010P00002F52a...
Line 545, ...<img src="//files.jb51.net/file_images/article/201704/20170430182...
Line 552, ...<img src="//files.jb51.net/do/uploads/allimg/201803/010P00003FC61...
Line 552, ...<img src="//files.jb51.net/do/uploads/litimg/180226/1A139602325.j...
Line 552, ...<img src="//files.jb51.net/do/uploads/allimg/201801/010P00003F342...

32 items are hidden.
Full results are available for registered users only.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
The H1 tag is missing
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about. Add a header to the page by using a H1 tag and place it within the BODY of the page source.
H2
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
8 H4 tag(s).
H5
H6
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
11.88 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
Not found
Other User-Agent
1 record(s)
Default User-Agent
Not found
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File failed Loaded (sitemap.xml)
Your site will benefit from having a sitemap.
WHOIS

Domain Name: JB51.NET
Registry Domain ID: 527217184_DOMAIN_NET-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2016-05-26T08:17:44Z
Creation Date: 2006-07-22T03:11:39Z
Registry Expiry Date: 2024-07-22T03:11:39Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: 480-624-2505
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: NS1.DNSV2.COM
Name Server: NS2.DNSV2.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2018-11-08T12:57:08Z

DNS Records
HostA RecordTTL
jb51.net58.218.204.252600
HostMX RecordPriorityTTL
jb51.netmxbiz1.qq.com5600
jb51.netmxbiz2.qq.com10600
HostNS RecordTTL
jb51.netns1.dnsv2.com86400
jb51.netns2.dnsv2.com86400
HostTXT RecordTTL
jb51.netv=spf1 include:spf.mail.qq.com ~all600

ns1.dnsv2.com
TTL: 600
Email address: level3dnsadmin.dnspod.com
Serial: 1565072980
Refresh: 3600
Retry: 180
Expire: 1209600
Minimum: 180

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Desktop Resource Breakdown
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Mobile
Mobile Usability
99%
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Compressing https://m.jb51.net/skin/mobile/js/jquery-1.10.2.min.js could save 59.2KiB (64% reduction).
Compressing https://m.jb51.net/ could save 40.3KiB (79% reduction).
Compressing https://m.jb51.net/skin/mobile2017/css/common.css could save 11.2KiB (73% reduction).
Compressing https://s95.cnzz.com/z_stat.php?id=1254400950&web_id=1254400950 could save 7.2KiB (65% reduction).
Compressing https://m.jb51.net/skin/mobile2017/css/index.css could save 6.7KiB (71% reduction).
Compressing https://m.jb51.net/skin/mobile/js/count.js could save 1.5KiB (52% reduction).
Compressing https://m.jb51.net/skin/mobile/js/menuclick.js could save 1.1KiB (67% reduction).
Compressing https://c.cnzz.com/core.php?web_id=1254400950&t=z could save 364B (37% reduction).
Compressing https://m.jb51.net/skin/mobile/js/asd_footer.js could save 186B (35% reduction).

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1KiB (24% reduction).

Minifying https://m.jb51.net/skin/mobile/js/count.js could save 630B (23% reduction).
Minifying https://m.jb51.net/skin/mobile/js/menuclick.js could save 445B (27% reduction).

Mobile Resource Breakdown
Total Resources76
Number of Hosts9
Static Resources71
JavaScript Resources8
CSS Resources2
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