It is very important that webmasters validate their websites by checking the html code that is produced on the front end of the site. This can be done with online tools like the markup validation tool of the W3C website or offline tools such as the CSE HTML Validator Lite. The HTML validator can be installed on a computer system running the Windows operating system to check html pages for errors and other problems.
Webmasters need a local html file so that it can be loaded into the software program. The easiest way to achieve this is to go to the website that should be validated, view the source code of it and save it as html on the computer system.
This html file can then be loaded and analyzed in the software. The html code will then be validated by the software. It will immediately jump to the first error in the code and link it to the errors and comments in the footer area. This makes it very easy to understand (in most cases) why something is not right with the code. It is possible to edit the html code right in the HTML Validator to correct the errors that have been discovered. It is still necessary to correct the error on the web as well obviously if the html code has been downloaded from the web.
The program comes with a few additional functions that help in certain cases. It is for example possible to convert all tags of the html document to lowercase, find and replace code in the html file or to use a spell checker.
CSE HTML Validator Lite can be downloaded from the developer’s website. It is available for all Windows operating systems including Windows XP, Windows Vista and Windows 7.
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>Webmasters need a local html file so that it can be loaded into the software program
Inaccurate, can perfectly open online pages as well (File > Open from the web).
Good app but those who do serious web development will have to pay for professional version. Free one keep lots of errors under wraps and is only for non-commercial use.
By the way it has online version as well http://onlinewebcheck.com/
wow you are right, did not see the open from web menu item.
Why not use the free HTML Validator available as addon for Firefox:
https://addons.mozilla.org/nl/firefox/addon/249
Homepage of developer: http://users.skynet.be/mgueury/mozilla/
I use this one very often; it has HTML-Tidy built in, so that your pages look even better!
Validation & cleaning right from your browser. Works perfectly on Firefox in Linux as well (versions for various platforms at: http://users.skynet.be/mgueury/mozilla/download.html)