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UPGRADING.md

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From v3.x to v4.x

HTML-Proofer 4 has been fundamentally rewritten to address many problems, provide better expected defaults, and make it easier for future updates.

The biggest change is that the HTML parsing check has been removed. HTML parsers like Nokogumbo/Nokogiri, and indeed, many browsers, are fairly generous when it comes to accepting malformed HTML. This feature detected more false issues than actual ones.

You can also set your own custom reporter, to format results as you see fit. See the README for more info on how to do this.

Other changes include:

  • Many of the configuration options have been renamed to be consistent. For example, url_ignore has become ignore_urls, and url_swap became swap_urls
  • alt_ignore was removed; use ignore_missing_alt to ignore missing alt attributes, and ignore_empty_alt to ignore alt attributes that are empty (eg., <img alt> or <img alt="">)
  • check_favicon and check_opengraph have been removed, as has checks_to_ignore. Pass in checks using the checks configuration option. See the README for more info.
  • check_img_http was removed. All URLs are expected to be HTTPS; set enforce_https to false if you prefer keeping HTTP images around
  • external_only was removed
  • file_ignore was renamed to ignore_files
  • http_status_ignore was renamed to ignore_status_codes
  • internal_domains was removed; use swap_urls to prepend any necessary domain names
  • Attributes can now be swapped with the swap_attributes option
  • typhoeus_config and hydra_config have been renamed to just typhoeus and hydra
  • Configuring the cache can now be down through the cache config option, rather than timeframe and storage_dir
  • Parallel file processing is on by default
  • Assuming extensions (.html) is enabled by default. Jekyll and other static sites use this.
  • The cache is much more performant