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The pluggable natural language linter for text and markdown.


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The pluggable linting tool for text and markdown.
It is similar to ESLint, but textlint for natural language.

Build Status

Online Demo

Visit https://textlint.github.io/ and type text!


Quick Tour

Quick tour of textlint!

Read Getting Started :squirrel:


You can install textlint command using npm:

$ npm install textlint -g
Requirement: Node.js 4.0.0 >=

:warning: Caution: Mixed location of installation.

  • If you have installed textlint as --global(-g), must install each rule as --global.
  • If you have installed textlint as --save-dev(-D), must install each rule as --save-dev.

Recommended way: Install textlint and rules as --save-dev per project.


screenshot lint pretty-error

textlint has no default rule!!

Use textlint with --rule or --rulesdir, .textlintrc config file.

# Install textlint's rule
npm install -g textlint-rule-no-todo

Use with textlint-rule-no-todo rule. (allow to short textlint-rule-no-todo to no-todo)

textlint --rule no-todo README.md


See command help.

$ textlint -h
textlint [options] file.md [file.txt] [dir]

  -h, --help                 Show help.
  -c, --config path::String  Use configuration from this file or sharable config.
  --plugin [String]          Specify plugins
  --rule [path::String]      Set rule package name
  --preset [path::String]    Set preset package name and load rules from preset package.
  --rulesdir [path::String]  Set rules from this directory and set all default rules to off.
  -f, --format String        Use a specific output format.
  --fix                      Automatically fix problems
  --debug                    Output debugging information
  --dry-run                  Enable dry-run mode for --fix. Only show result, don't change the file.
  -v, --version              Outputs the version number.
  --no-color                 Disable color in piped output.
  -o, --output-file path::String  Enable report to be written to a file.
  --init                     Create the config file if not existed. - default: false
  --quiet                    Report errors only. - default: false

  --experimental             Enable experimental flag.Some feature use on experimental.

Using stdin:
  --stdin                    Lint text provided on <STDIN>. - default: false
  --stdin-filename String    Specify filename to process STDIN as

Allow to use with multiple rules.

$ textlint --rule no-todo --rule very-nice-rule README.md



.textlintrc is config file that is loaded as JSON, YAML or JS via MoOx/rc-loader.

$ textlint --rule no-todo --rule very-nice-rule README.md

is equal to create .textlintrc file

  "rules": {
    "no-todo": true,
    "very-nice-rule": true

and run textlint command

$ textlint README.md
# Automatically load `.textlintrc` in current directory

.textlintrc can define rule’s option.

  "rules": {
    "no-todo": false, // disable
    "very-nice-rule": {
        "key": "value"

Pass rule’s options(“key”: “value”) to very-nice-rule.

It mean that use the following format:

  // Allow to comment in JSON
  "rules": {
    "<rule-name>": true | false | object

:information_source: for more details


textlint plugin is a set of rules and rulesConfig or customize parser.

To enable plugin, put the “plugin-name” into .textlinrc.

// `.textlinrc`
    "plugins": [
    // overwrite-plugins rules config
    // <plugin>/<rule>
    "rules": {
        "plugin-name/rule-name" : false

:information_source: See docs/plugin.md

Supported file formats

textlint support Markdown and plain text by default.

Install Processor Plugin and add new file format support.

For example, If you want to lint HTML, use textlint-plugin-html as plugin.

npm install textlint-plugin-html

Add "html" to .textlintrc

    "plugins": [

Run textlint on .html files:

textlint index.html

Optional supported file types:

See Processor Plugin List for details.

Rule list - Collection of textlint rule

See A Collection of textlint rule · textlint/textlint Wiki.

If you create new rule, and add it to the wiki :)


textlint rule

Some rules are fixable using the --fix command line flag.

$ textlint --fix README.md
# As a possible, textlint fix the content.


Also, support dry run “dry run”) mode.

$ textlint --fix --dry-run --formatter diff README.md
# show the difference between fixed content and original content.

Built-in formatters

Use following formatter.

  • stylish (defaults)
  • compact
  • checkstyle
  • jslint-xml
  • junit
  • tap
  • table
  • pretty-error
  • json
  • unix

e.g.) use pretty-error.js

$ textlint -f pretty-error file.md

More detail in textlint/textlint-formatter.

Use as node modules

You can use textlint as node modules.

$ npm install textlint --save-dev

Minimal usage:

import {TextLintEngine} from "textlint";
const engine = new TextLintEngine({
    rulePaths: ["path/to/rule-dir"]
engine.executeOnFiles(["README.md"]).then(results => {
    console.log(results[0].filePath);// => "README.md"
    // messages are `TextLintMessage` array.
            id: "rule-name",
            message:"lint message",
            line: 1, // 1-based columns(TextLintMessage)
            column:1 // 1-based columns(TextLintMessage)
    if (engine.isErrorResults(results)) {
        var output = engine.formatResults(results);

Low level usage:

import {textlint} from "textlint";
    // rule-key : rule function(see docs/rule.md)
    "rule-key": function(context){
        var exports = {};
        exports[context.Syntax.Str] = function (node) {
            context.report(node, new context.RuleError("error message"));
        return exports;
textlint.lintMarkdown("# title").then(results => {
    console.log(results[0].filePath);// => "README.md"
    console.log(results[0].messages);// => [{message:"lint message"}]

More detail on:


textlint has four extensible points

  • rule
    • rule is a rule for linting.
  • filter rule
    • filter rule is a rule for filtering result of errors.
  • rule-preset
    • rule-preset contains rules.
  • plugin
    • plugin contains rules and a processor.


FAQ: How to create rules?

Please see docs/

FAQ: How to suppress error by comments like <!-- textlint-disable -->?

You can use filter rule like textlint-filter-rule-comments.

Please see docs/configuring.md for more details.

Use with Other Tools

gulp plugin

Grunt plugin

for Atom Editor

for SublimeText

Syntax checking hacks for vim

See Markdown, Text and HTML of scrooloose/syntastic Wiki

Chrome Extension

Who’s using textlint?

The vuejs.org for japanese.


  1. Fork it!
  2. Create your feature branch: git checkout -b my-new-feature
  3. Commit your changes: git commit -am 'Add some feature'
  4. Push to the branch: git push origin my-new-feature
  5. Submit a pull request :D


MIT and

lib/load-rules.js, util/traverse.js, cli.js and timing.js are:

Copyright (c) 2013 Nicholas C. Zakas. All rights reserved.

Logos & Icons

Download from textlint/media.

Related Work

SCG: TextLint is similar project.

SCG: TextLint’s place is equal to my textlint(Fortuitously, project’s name is the same too!).


via Natural Language Checking with Program Checking Tools


Thanks to ESLint.

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Top Contributors

azu homu 1000ch takahashim kazupon orangain joeybaker hakatashi ReadmeCritic sindresorhus sotayamashita koba04 mkwtys rhysd


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