Unknown attribute

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

HtmlUnknownAttribute

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | HTML

Inspection options

Here you can find the description of settings available for the Unknown attribute inspection, and the reference of their default values.

Custom HTML tag attributes

Option ID:

myCustomValuesEnabled

Default value:

Selected

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

• CLion 2025.2

• DataGrip 2025.2

• DataSpell 2025.2

• GoLand 2025.2

• IntelliJ IDEA 2025.2

• JetBrains Rider 2025.2

• PhpStorm 2025.2

• PyCharm 2025.2

• RubyMine 2025.2

• WebStorm 2025.2