RightWebPage is a free software that verifies and corrects many aspects of conformance of Web sites to International Standard ISO/IEC 23026:2006 - Software Engineering - Recommended Practice for the Internet - Web Site Engineering, Web Site Management, and Web Site Life Cycle.
RightWebPage Features
1) Verification of a single page or entire web site at your option;
2) HTML Validation against W3C DTDs and WHATWG (X)HTML5 pre-release schemas;
3) Automatic checking and correction of many aspects of conformance to international best practices;
4) Visualization of a snapshot with a given character encoding (the user agent is also chosen in order to present the specific version originally intended to be seen in a given web browser);
5) Complete verification of links. Even the redirections to a custom error page are detected by a special Algorithm;
6) Automatic correction of missing widths and heights of images to enable better responsiveness of web pages;
7) Automatic correction of missing meta tags elements like default language and metadata;
8) Support for web pages in Chinese, Japanese, Korean and many other languages.
9) Performance optimization for multi-core processors.
10) Validation during navigation.
11) Application of standards during revalidation.
12) Memory revalidation with no need to make all corrections of a web page at once (users may correct small portions of the code and see the results pressing F5)..
13) HTML TIDY accessibility check.
14) Balloon tooltips for contextual help.
15) Recursive validation for frames.
16) Proxy support.
17) Web inSpector with JavaScript debugger.