IntelliJ IDEA 2018.1 Help


IntelliJ IDEA brings powerful support for HTML that includes syntax and error highlighting, formatting according to the code style, structure validation, code completion, and much more.

Creating an HTML file

  • On the main menu, choose File | New, and then choose HTML File in the pop-up list. IntelliJ IDEA creates a stub file based on the HTML file template and opens it in the editor.

Generating references in an HTML file

IntelliJ IDEA can generate <script>, <link>, or <img> tags inside <head>. For <img> tags, IntelliJ IDEA also generates the width and height attributes.

  • Select a JavaScript, CSS, or image file in the Project tool window and drag it into the HTML file.

Previewing output of an HTML file in a browser

You can preview a file with Web contents in the IntelliJ IDEA default browser or in the one of your choice.

To open the page preview in the default browser

  • Open the file in the editor and choose View | Open in Browser on the main menu.

To open the page preview in a browser of your choice

  • Open the file in the editor, choose View | Preview file in on the main menu, and select the desired browser from the pop-up menu.
  • Alternatively, hover your mouse pointer over the code to show the browser icons bar, and click the icon that indicates the desired browser:

Viewing HTML source code of a web page in the editor

  1. Choose File | Open URL.
  2. In the Open URL dialog box that opens, type the URL address of the web page or choose a previously opened URL from the list.

Viewing embedded images

IntelliJ IDEA offers several ways to view images embedded in an HTML file. You can use navigation to source, open an image in an external graphical editor, or preview images on-the-fly.

To view an image in IntelliJ IDEA

  • Select the image file in the Project tool window, and choose Jump to Source on the context menu of the selection or press F4.
  • Alternatively, place the cursor at the reference to the image in the editor, and choose Jump to Source on the context menu or press Ctrl+B

To view an image in an external editor

  1. Configure the path to the external editor on the Images page (File | Settings | Editor | Images for Windows and Linux or IntelliJ IDEA | Preferences | Editor | Images for macOS).
  2. Select the image file in the Project tool window, and choose Open in external editor or press Ctrl+Alt+F4.

Extracting an include file

You can extract a fragment of HTML or CSS code into a separate include file. Entire JavaScript code blocks inside a <script> tags can also be extracted.

  1. In the editor, select the code block to be extracted and choose Refactor | Extract | Extract Include File on the main menu or on the context menu of the selection.
  2. In the Extract Include File dialog box that opens, specify the name of the target include file in the Name for extracted include file text box.
  3. In the Extract to directory text box, specify the directory to store the include file in. Leave the predefined directory or choose another one.
  4. Click OK, when ready. IntelliJ IDEA extracts the selected source code into the specified file in the target directory and generates the corresponding reference in the source file.

Project-wide code completion for CSS classes

IntelliJ IDEA first suggests classes and ids from the style tag and linked files. But if no matching results are found, IntelliJ IDEA also suggests symbols defined in all stylesheet files in the project.

Project-wide completion for CSS symbols in HTML
To see all classes and ids defined in the project straight away, before you start typing, press Ctrl+Space twice.

Last modified: 24 July 2018

See Also