The integrated web browser uses and requires the Microsoft Internet Explorer Engine. Note that this is an outdated rendering engine but it can still be useful. Be sure to also check your web documents using a modern browser like Google Chrome and/or Firefox.

First make sure that the integrated web browser controls are available (View->Other->Integrated Web Browser Controls).

You can access the integrated web browser from the View menu (View->Windows->Web Browser), by pressing F8, or by selecting the Preview or Browser tabs.

The integrated web browser operates in one of two modes:

Preview Mode - Use this mode to preview your HTML documents to see how they look in Internet Explorer. Preview mode is active when the Preview Mode menu option is checked. You can even preview your documents while you work on them by having the preview automatically refreshed. To have HTML Validator automatically and periodically refresh the web browser preview while you work, make sure that the Auto Refresh in Preview Mode menu option is checked.

Browse Mode - Use this mode to browse the web using the integrated web browser. Browse mode is active when the Browse Mode menu option is checked. While browsing, the source for the document being displayed is shown in an editor tab named "WB Source" and can be easily validated. As you navigate through the web, you can have the source automatically validated after each page is loaded. To automatically validate pages as you browse the web, make sure that the Auto Validate in Browse Mode menu option is checked. Using the integrated web browser is a great way to check a website with dynamic pages such as those made by ASP, CFML, or PHP scripts.

By accessing the integrated web browser through the Preview or Browser tabs, it will automatically be switched into the preview or browse mode.


The options are accessible from the options button drop-down menu on the integrated web browser's toolbar.

View Status Bar - Toggle the visibility of the browser's status bar (shown only when the browser is not docked).

Hide When Inactive - Check this option so that when the browser is not docked, and another application receives focus, the browser window is automatically hidden.

Path Mapping Options

The path mapping integrated web browser options make it easier to correctly preview documents.

For example, if the root directory for a website is C:\web\domain1, and you want to preview the web pages by running them through a web server, like a locally running web server, then you can map C:\web\domain1\ to http://localhost/ or Then, when previewing a document in C:\web\domain1, it will navigate to the proper http location (use the Map Navigated URL Only option).

Enable Path Mapping - Check this option to enable path mapping. When path mapping is enabled, either internal links are mapped, or only the navigated URL (choose from one of the radio menu options). This option is enabled by default.

Map Internal Links - Select this option if you want to map the links in a document. For example, CSS HTML Validator will attempt to map the links specified by "href" and "src" values. Links specified in url() functions are also mapped. This option is not enabled by default.

Map Navigated URL Only - Select this option to only map the URL that is navigated to when previewing. Links in the document are not mapped. This is the preferred method. This option is enabled by default.

Path Mapping Options - Select this option to go to the Path Mapping Options Page.

hmtoggle_plus1Helpful notes & tips about the integrated web browser