Unlike many other HTML checkers, CSS HTML Validator features an unusually powerful custom syntax checking engine that is specifically designed to check HTML, XHTML, and CSS. More information...
CSS HTML Validator Professional is a big step up from the home edition due to some significant extras. It includes the Batch Wizard, the Configuration Editor, 180 days of free major upgrades, and more. The differences among the enterprise, professional and home edition are listed in the table below.
The table below highlights some of the major differences between editions and provides more details in the footnotes. Minor differences are not mentioned.
|Price (single license)||US $69||US $129||US $349|
|Customization with user functions3|
|Upgrade protection5||180 days||1 year|
|Priority support & maint (PS&M)||Optional||Optional||Included|
|Batch Wizard enhancements6|
1The Batch Wizard lets you easily check multiple files and/or URLs. It will generate a neatly formatted HTML report with the results (view sample report). It can also check URLs and follow the links in the URLs to check an entire small to medium sized web site or part of a large one. The Batch Wizard is not included in the home/standard edition.
2The Configuration Editor lets you customize the validator messages, letting you change the text of many messages. You can also change the message type (for example, you can change a warning message to an error message). The Configuration Editor also lets you add your own validation messages, as well as new tags and attributes. The Configuration Editor is not included in the home/standard edition.
3The professional and enterprise editions allow you to specify a text file that contains special 'user functions' that are used during validations to customize the validation. These functions can be used to alter validation behavior and validation messages, perform additional checks, produce specialized output, and much more. Visit the TNPL section in the documentation for more information.
4The professional and enterprise editions can output validation messages in XML format. The home/standard edition cannot.
5Upgrade protection give you a free upgrade if a new major release becomes available within the upgrade protection period. A major upgrade is a change in version number of .1 or more, like from v15.0x to v16.0x. Upgrade pricing after the upgrade protection period can be found on the upgrade page.
6The Batch Wizard in the enterprise edition includes limit extensions and XML output. The limit extensions increase the number of targets that can be checked at one time. This is useful for large sites with thousands or even tens of thousands of pages. Note that there is no set limit to the number of pages that the Batch Wizard can check at one time as it depends on factors like computer resources (memory), the validation options settings, and the site itself. However, using the limit extension feature in the enterprise edition should significantly increase (vs the professional edition) the maximum number of targets that can be checked at one time. The XML output option allows XML formatted reports in addition to HTML.
Upgrades are available to upgrade your edition by paying the difference in price.