Markuplint NPM

Peace of mind in your markup - An HTML linter for all markup developers.

Features

Conformance checking according to HTML Standard, WAI-ARIA, ARIA in HTML, etc.
Supports CSS and SVG values.
Supports React, Vue, Svelte, Alpine.js, HTMX, Pug, PHP, and more.
Possible to specify the rule for each element if you use CSS Selector.
Potential to create a custom rule.

Screenshot: Violation Report CLI output

Instant using

$ npx markuplint target.html

Supported for Node.js v18.18.0 or later.

Usage

Initialization

Create a configuration file and install dependencies.

$ npx markuplint --init
# or
$ yarn run markuplint --init

Answer questions interactively. By doing this, needed modules are installed, including markuplint.

Add a command to the scripts option on package.json:

{
  "scripts": {
    "lint:html": "markuplint **/*.html"
  }
}

If you want to change the target path, you can change it for your project.

Execute the script:

$ npm run lint:html
# or
$ yarn lint:html

Command line options

$ npx markuplint --help

Usage
	$ markuplint <HTML file paths (glob format)>
	$ <stdout> | markuplint

Options
	--config,                -c FILE_PATH  A configuration file path.
	--fix,                                 Fix HTML.
	--format,                -f FORMAT     Output format. Support "JSON", "Simple", "GitHub" and "Standard". Default: "Standard".
	--no-search-config                     No search a configure file automatically.
	--ignore-ext                           Evaluate files that are received even though the type of extension.
	--allow-warnings                       Return status code 0 even if there are warnings.
	--no-import-preset-rules               No import preset rules.
	--locale                               Locale of the message of violation. Default is an OS setting.
	--no-color,                            Output no color.
	--problem-only,          -p            Output only problems, without passeds.
	--verbose                              Output with detailed information.
	--include-node-modules                 Include files in node_modules directory. Default: false.

	--init                                 Initialize settings interactively.

	--help,                  -h            Show help.
	--version,               -v            Show version.

Examples
	$ markuplint verifyee.html --config path/to/.markuplintrc
	$ cat verifyee.html | markuplint

Documentation

Playground

Playground

Editor Extensions

Visual Studio Code

License

Thanks

This linter is inspired by:

@everything-registry/sub-chunk-2134 stupidly-happy pumpkinhead @zalastax/nolb-marku eslint-plugin-markup @yusukehirao/webpagelint markuplint-plugin-textlint markuplint-sync @d-zero/markuplint-config

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markuplint v4.8.1

Features

Instant using

Usage

Initialization

Command line options

Documentation

Playground

Editor Extensions

License

Sponsors

Corporate Sponsors

Personal Supporters

Thanks