Hyperlink

Detect invalid and inefficient links on your webpages. Works with local files or websites, on the command line and as a node library.

Because web performance is not only about making your own page run smoothly, but also about giving people a quick navigation out of your page.

Read some more of the thoughts behind hyperlink in Check your link rot.

Hyperlink is known to:

• Detect broken links to internal assets
• Detect broken links to external assets
• Detect broken links to fragment identifiers
• Detect missing DNS records on external links
• Detect inefficient external links that result in a redirect chain
• Detect miscellaneous syntax errors in your web assets
• Detect mixed content warnings on TLS secured pages

Todo:

• Detect inefficient redirects to internal assets
• Autocorrect inefficient redirects in local files

Installation

$ npm install -g hyperlink

Hyperlink exposes an executable hyperlink in your npm binaries folder.

Usage

Command line usage and options:

$ hyperlink [options] <htmlFile(s) | url(s)>

Options:
  -h, --help         Show this help                     [default: false]
  --root             Path to your web root (will be deduced from your
                     input files if not specified)                      
  --verbose, -v      Log all added assets and relations. VERY verbose.  
  --recursive, -r    Crawl all HTML-pages linked with relative and root
                     relative links. This stays inside your domain.     
  --exclude          Url pattern to exclude from the build. Supports *
                     wildcards. You can create multiple of these:
                     --exclude *.php --exclude http://example.com/*.gif
                                                                        
  --concurrency, -c  The maximum number of assets that can be loading
                     at once (defaults to 100)            [default: 100]

Hyperlink takes any number of input files or urls. It is recommended having these urls on the same domain or be part of the same web site.

The --root option is only needed for resolving root relative urls in case you are not sending in pages located in the web root.

The most common use case is to do hyperlink path/to/index.html -r, giving hyperlink your index file in your web root and having it recursively explore all linked pages and their referenced assets, internal and external.

Integrations

Hyperlink is using the TAP output format, which is sort of human readable, and very machine readable. Use the TAP output in your CI setup, or pipe the output through one of these awesome formatters to get improved human readability, an output Jenkins likes, or whatever you want: tap-colorize tap-difflet tap-dot tap-json tap-min tap-nyan tap-spec tap-xunit

Example:

$ hyperlink https://mntr.dk/ | tap-nyan
 37  -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-__,------,
 1   -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-__|  /\_/\
 0   -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_~|_( x .x)
     -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ ""  ""
  Failed Tests: There was 1 failure

    ✗ Crawling 17 outgoing urls: URI should have no redirects - http://www.milwaukeepolicenews.com/

Tee is a very useful program when you want to save and replay TAP outputs. In order to save the output to a file but still see the logs on stdout you might run a command line like so:

hyperlink https://mntr.dk -r | tee mntr.dk.tap | tap-colorize

License

The MIT License (MIT)

Copyright (c) 2014 Peter Müller munter@fumle.dk

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.