Category: Main Productivity Web Design CSS HTML Validator Standard/Home, Pro, Enterprise v18 & v19

CSS HTML Validator

Version 19.02 includes the latest updates and bug fixes plus accommodations to facilitate execution under Wine 4. This applies to all editions: Standard/Home, Pro, and Enterprise.

Application Details:

Version: Standard/Home, Pro, Enterprise v18 & v19
License: Retail
Votes: Marked as obsolete
Latest Rating: Gold
Latest Wine Version Tested: 4.4

Maintainers: About Maintainership

Free Download Free trial of CSS HTML Validator Professional

Test Results

Old test results
The test results for this version are very old, and as such they may not represent the current state of Wine. Please consider submitting a new test report.
Selected Test Results

What works

Editing HTML, XHTML, CSS, JavaScript, and PHP

Editor features such as tabbed windows, scratch pads, clipboard copy and paste, drag and drop files into editor window, spell checking, HTML end tag auto insertion, menu insertion of HTML tags and special characters such as ©

Opens for editing web pages that are online as well as local

Syntax checking of HTML, HTML5, XHTML, CSS, CSS3, JavaScript, JSON

PHP syntax checking, if php.exe has been copied into the same Wine prefix as CSS HTML Validator

Link checking

Tips and recommendations for error correction, best practices, search engine optimization, and accessibility per WCAG and Section 508 requirements

Pretty Print and Fix

Printing and Print Preview

Online Help

Dynamic Help with F1 key (context-sensitive HTML tag information)

Sound (audible warnings and confirmations) if sound files are manually copied into the windows/media folder of the Wine prefix or manually specified in the CSS HTML Validator Engine Options

Batch Wizard: Professional and Enterprise editions include batch processing of multiple files or folders or complete web sites, either local or online, with option to select tool to apply, such as validation report, link check, Remove tags, HTML Tidy, other ....

Automatic registration from license information copied into the clipboard (see "Extra comments" for further information)

Manual registration by direct entry of license information as documented in the CSS HTML Validator FAQ

What does not

Local Help (Windows .chm file)

Integrated Web Browser (MS IE)

CSS HTML Validator's "Drag and Drop" feature. (The usual "drag and drop" from one app to another works fine. Here, "Drag and Drop" refers to a deprecated feature of CSS HTML Validator left over from very early versions. Though CSS HTML Validator's "Drag and Drop" feature does not work with default settings, this is easily fixed, as described in "Extra comments".)

Automatic registration using license information copied into the clipboard fails for versions of CSS HTML Validator prior to 19.02 on Ubuntu 18.04/19.04 with Wine 4 but works with all other tested Linux distributions. This has been fixed as of CSS HTML Validator 19.02 and later. See "Extra comments" for further information.


Local Help: Use Online Help, which is identical to the Local Help. In 19.01 or later, online help will automatically be used when running under Wine.

Integrated Web Browser: Use any local web browser -- Chrome, Firefox, etc.

The deprecated CSS HTML Validator "Drag and Drop" option: Navigate to Options > Validator Engine Options > Classic. In the "Output viewer" input field, replace "notepad.exe" with "cmdlineprocessor.exe" and ensure the "Open in editor instead" check box is checked. With these changes, "Drag and Drop" output opens in a panel in the editor, and full "Drag and Drop" functionality is available.

If failure of automatic registration using license information in the clipboard is encountered, upgrade to CSS HTML Validator 19.02 or later, or use manual registration as documented online in the CSS HTML Validator FAQ.

What was not tested

Command Line Processor

TNPL Scripting

Template Tool

Configuration file customization

Menu trees have not all been fully traced

Hardware tested


  • GPU: AMD
  • Driver: unknown

Additional Comments

Throughout 2018, CSS HTML Validator Standard v18 under Ubuntu 18.04 and Wine 3.0 was used for editing and syntax checking of HTML, CSS, PHP, and Javascript. No problems were encountered. Early in 2019, a new website was created using CSS HTML Validator Standard v19.01 under Ubuntu 18.04 and Wine 4.0. Later, CSS HTML Validator Professional v19.02 (pre-release) underwent extensive testing under Ubuntu 18.04 with Wine 4.4, with outcomes as documented above. In addition, basic installation and execution of CSS HTML Validator Professional v19.02 (pre-release) with Wine 4.0 has been tested under Ubuntu 19.04, Ubuntu Budgie, Linux Mint Cinnamon and MATE 19.1, Linux Lite 4.4, Debian 9.9, Elementary OS 5, and Fedora Desktop 30-1.2, and all these tests were successful.

The software registration failure with Ubuntu 18.04/19.04 under Wine 4 -- noted in "What does not work" -- has been fixed as of CSS HTML Validator version 19.02 and later, and has been verified to work with Wine 4 under all tested distributions.

Installation is not possible in CentOS Linux 7 due to lack of 32-bit support in CentOS Wine. The 32-bit support in Wine is needed to execute the 32-bit installer for 64-bit CSS HTML Validator.

If the deprecated features were to be eliminated, the rating of CSS HTML Validator v19.02 would be Platinum.

selected in Test Results table below
Operating systemTest dateWine versionInstalls?Runs?Used
CurrentUbuntu 18.04 "Bionic" amd64 (+variants like Kubuntu)Jun 18 20194.4Yes Yes YesGoldDavid Bridges 

Known Bugs

Bug # Description Status Resolution Other apps affected

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