markdown-link-check

Extracts links from markdown texts and checks whether each link is alive (200 OK) or dead. mailto: links are validated with isemail.

Installation

To add the module to your project, run:

npm install --save markdown-link-check

To install the command line tool globally, run:

npm install -g markdown-link-check

API

markdownLinkCheck(markdown, [opts,] callback)

Given a string containing markdown formatted text and a callback, extract all of the links and check if they're alive or dead. Call the callback with (err, results)

Parameters:

• markdown string containing markdown formatted text.
• opts optional options object containing any of the following optional fields:
• baseUrl the base URL for relative links.
• showProgressBar enable an ASCII progress bar.
• callback function which accepts (err, results).
• err an Error object when the operation cannot be completed, otherwise null.
• results an array of objects with the following properties:
• link the link provided as input
• status a string set to either alive or dead.
• statusCode the HTTP status code. Set to 0 if no HTTP status code was returned (e.g. when the server is down).
• err any connection error that occurred, otherwise null.

Examples

Module

'use strict';

var markdownLinkCheck = require('markdown-link-check');

markdownLinkCheck('[example](http://example.com)', function (err, results) {
    if (err) {
        console.error('Error', err);
        return;
    }
    results.forEach(function (result) {
        console.log('%s is %s', result.link, result.status);
    });
});

Command Line Tool

The command line tool optionally takes 1 argument, the file name or http/https URL. If not supplied, the tool reads from standard input.

Check links from a local markdown file

markdown-link-check ./README.md

Check links from a markdown file hosted on the web

markdown-link-check https://github.com/tcort/markdown-link-check/blob/master/README.md

Check links from standard input

cat *.md | markdown-link-check

Usage

  Usage: markdown-link-check [options] [filenameOrUrl]

  Options:

    -h, --help      output usage information
    -p, --progress  show progress bar

Testing

npm test

License

See LICENSE.md