比W3CSchool更全更新更好的W3School在线手册_php在线手册学习下载_武汉php培训_itbooks电子书官网 ...
www.itbooks.cn/
IT电子书是一个比W3CSchool更全更新更好的,专门为网站开发爱好者打造的IT技术学习交流平台。内含HTML4,HTML5,CSS2,CSS3,JS,JQUERY,PHP,MYSQL,LINUX教程和常用的帮助手册下载,还有PHP视频教程,IT技术知识在线问答等W3School在线手册 ...
- Avoid using deprecated HTML tags.
- Use "H" tags.
URL
Domain : www.itbooks.cn/
Character length : 15
Title
比W3CSchool更全更新更好的W3School在线手册_php在线手册学习下载_武汉php培训_itbooks电子书官网
Description
IT电子书是一个比W3CSchool更全更新更好的,专门为网站开发爱好者打造的IT技术学习交流平台。内含HTML4,HTML5,CSS2,CSS3,JS,JQUERY,PHP,MYSQL,LINUX教程和常用的帮助手册下载,还有PHP视频教程,IT技术知识在线问答等W3School在线手册。
Keywords (meta keywords)
itbooks,itbooks官网,it电子书,it电子书官网,W3CSchool,w3cschool 在线教程,武汉php培训,W3School,Mysql入门教程
Error! Using “meta keywords” is meaningless in a while.
Error! Using “meta keywords” is meaningless in a while.
Open Graph Protocol
Error! The website does not use the OG (Open Graph) protocol.
Dublin Core
Dublin Core is not used
Underscores in the URLs
Good! No underscore (_) found in the URLs.
Search engine friendly URLs
Good! The website uses SEO friendly URLs.
Checking the robots.txt file
The robots.txt file is missing!
Social Engagement
No info found.
Doctype
HTML 5
Encoding
Perfect! The character encoding is set: UTF-8.
Language
Error! No language localization is found.
Title
比W3CSchool更全更新更好的W3School在线手册_php在线手册学习下载_武汉php培训_itbooks电子书官网
Character length : 62
Good! The title’s length is between 10 and 70 characters.
Character length : 62
Good! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 4%
Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.
Error! The text / HTML code ratio is under 15 percent on this website. This value shows that the website has relatively few text content.
Headings
H1 | H2 | H3 | H4 | H5 | H6 |
---|---|---|---|---|---|
0 | 0 | 0 | 0 | 0 | 0 |
No "H" tags found
Heading structure in the source code
Word cloud
- 帮助手册2
- 培训就业2
- 在线问答2
- mysql中文手册2
- mysql入门教程2
- javascript手册2
Keyword matrix
word | title | descriptions | heading |
---|---|---|---|
帮助手册 | |||
培训就业 | |||
在线问答 | |||
mysql中文手册 | |||
mysql入门教程 | |||
javascript手册 |
404 Page
The website has a 404 error page.
Flash content
Good! The website does not have any flash contents.
Frame
Good! The website does not use iFrame solutions.
Images
We found 15 images on this web page.
Alternate attributes for the following 15 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
Alternate attributes for the following 15 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
- http://www.itbooks.cn/ui/common/images/logo_it.png
- http://upload.itbooks.cn/books/cover/2.png
- http://upload.itbooks.cn/books/cover/3.png
- http://upload.itbooks.cn/books/cover/4.png
- http://upload.itbooks.cn/books/cover/5.png
- http://upload.itbooks.cn/books/cover/6.png
- http://upload.itbooks.cn/books/cover/1.png
- http://upload.itbooks.cn/books/cover/7.png
- http://upload.itbooks.cn/books/cover/8.png
- http://upload.itbooks.cn/books/cover/10.png
- http://upload.itbooks.cn/books/cover/9.png
- http://upload.itbooks.cn/books/cover/11.png
- http://upload.itbooks.cn/books/cover/12.png
- http://www.itbooks.cn/ui/common/images/qr_mobile.png
- http://www.itbooks.cn/ui/common/images/loading.gif
Deprecated HTML elements
Good! No deprecated HTML tags are detected.
Redirection (www / not www)
Good! The web address is accessible only in one version. The version without www is redirected to the version with www.
Deprecated HTML elements
Good! No deprecated HTML tags are detected.
Printability
Suggestion! Unfortunately, no printer-friendly CSS found.
Meta Tag (viewport tag, mobile devices)
Error! The meta tag named viewport is missing.
Server response time
The server response time is fast enough.
Table layout
Good! No nested tables found.
Number of HTTP resources
24
Number of source domains
2
Render blocking resources
The elements below are blocking the “above the fold” rendering.
List of render blocking javascript files
List of render blocking javascript files
- http://www.itbooks.cn/ui/common/js/jquery-3.2.1.min.js
- http://www.itbooks.cn/ui/fonts/iconfont.css
- http://www.itbooks.cn/ui/common/css/common.css
- http://www.itbooks.cn/ui/index/css/index.css
Javascript
Good! Just a few javascript files are detected on the website.
- http://www.itbooks.cn/ui/common/js/jquery-1.11.3.min.js
- http://www.itbooks.cn/ui/common/js/jquery.placeholder.min.js
- http://www.itbooks.cn/ui/common/js/common.js
File size of all javascript files combined
92.87KB
Javascript minifying
You can save 849B (33% compression) on the analysed URL by minifying the javascript files.
CSS
Good! Just a few CSS files are used on this website.
- http://www.itbooks.cn/ui/fonts/iconfont.css
- http://www.itbooks.cn/ui/common/css/common.css
- http://www.itbooks.cn/ui/index/css/index.css
File size of all css files combined
20.42KB
CSS minifying
You can save 619B (18% compression) on the analysed URL by minifying the CSS files.
- By minifying http://www.itbooks.cn/ui/common/css/common.css you can save 423B (16% compression rate)
- By minifying http://www.itbooks.cn/ui/index/css/index.css you can save 196B (26% compression rate)
Uncompressed size of the of the HTML
11.58KB
Gzip compression
Error! By using Gzip you can save 432B (56% compression) on your site.
- By compressing http://www.itbooks.cn/ui/index/css/index.css you can save 432B (56% compression rate)
Number of static resources (image, JS, CSS)
21
Browser cache
The browser cache is not set correctly for all elements.
URL | Duration |
---|---|
http://www.itbooks.cn/ui/common/css/common.css | 12 hours |
http://www.itbooks.cn/ui/common/js/common.js | 12 hours |
http://www.itbooks.cn/ui/common/js/jquery-3.2.1.min.js | 12 hours |
http://www.itbooks.cn/ui/fonts/iconfont.css | 12 hours |
http://www.itbooks.cn/ui/index/css/index.css | 12 hours |
File size of all images combined
731.17KB
Image optimisation
You can save 687KB (96% compression) by optimising the images below:
- By lossless compressing the http://upload.itbooks.cn/books/cover/6.png you can save 175.4KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/7.png you can save 107.5KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/12.png you can save 81.9KB (95%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/3.png you can save 79.9KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/5.png you can save 66.4KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/9.png you can save 52.2KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/11.png you can save 43.6KB (97%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/1.png you can save 34.9KB (96%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/2.png you can save 21.3KB (95%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/8.png you can save 7.7KB (81%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/4.png you can save 7.4KB (88%) data.
- By lossless compressing the http://upload.itbooks.cn/books/cover/10.png you can save 7.3KB (80%) data.
- By lossless compressing the http://www.itbooks.cn/ui/common/images/logo_it.png you can save 1.5KB (42%) data.
We found a total of 34 different links.
Internal links: 34
Internal links: 34
External links:
Link text (anchor) | Link strength |
---|
Internal links:
Link text (anchor) | Link strength |
---|---|
http://www.itbooks.cn | |
首页 | |
HTML4手册 | |
HTML5手册 | |
CSS2手册 | |
CSS3手册 | |
Javascript手册 | |
JQuery手册 | |
PHP手册 | |
MySQL入门教程 | |
MySQL中文手册 | |
Linux手册 | |
Nginx手册 | |
Swift语言 | |
视频教学 | |
在线问答 | |
软件下载 | |
培训就业 | |
网站公告 | |
行业资讯 | |
IT速学通 | |
http://www.itbooks.cn/book/2 | |
http://www.itbooks.cn/book/3 | |
http://www.itbooks.cn/book/4 | |
http://www.itbooks.cn/book/5 | |
http://www.itbooks.cn/book/6 | |
http://www.itbooks.cn/book/1 | |
http://www.itbooks.cn/book/7 | |
http://www.itbooks.cn/book/8 | |
http://www.itbooks.cn/book/10 | |
http://www.itbooks.cn/book/9 | |
http://www.itbooks.cn/book/11 | |
http://www.itbooks.cn/book/12 | |
|
IP
114.55.60.87
External hidden links
Good! No hidden external links found
Looking for eval()
Good! No eval(bas64_decode()) scripts are found
Checking for XSS vulnerability
No XSS vulnerability found
Email encryption
Good! We have not found any unencrypted email addresses.
Favicon
Good! The website uses favicon.
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