Compliance with JSON standard

Reports the following discrepancies of a JSON file with the language specification:

A line or block comment (configurable).
Multiple top-level values (expect for JSON Lines files, configurable for others).
A trailing comma in an object or array (configurable).
A single quoted string.
A property key is a not a double quoted strings.
A NaN or Infinity/-Infinity numeric value as a floating point literal (configurable).

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.

JsonStandardCompliance

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 | JSON and JSON5

Inspection ID: JsonStandardCompliance

Inspection options

Here you can find the description of settings available for the Compliance with JSON standard inspection, and the reference of their default values.

Warn about comments

Option ID:

myWarnAboutComments

Default value:

Selected

Warn about multiple top-level values

Option ID:

myWarnAboutMultipleTopLevelValues

Default value:

Selected

Warn about trailing commas

Option ID:

myWarnAboutTrailingCommas

Default value:

Selected

Warn about NaN and Infinity/-Infinity numeric values

Option ID:

myWarnAboutNanInfinity

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:

//noinspection JsonStandardCompliance

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

Inspection Details
By default bundled with:	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, Qodana for .NET 2025.2, Qodana for Go 2025.2, Qodana for JS 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, Qodana for Ruby 2025.2, RubyMine 2025.2, WebStorm 2025.2

Last modified: 18 September 2025