Command Line Interface for The W3C Markup Validation Service
$ cat /var/www/html/index.html
<!DOCTYPE html>
<html>
<body>Hello, Validator!</body>
</html>
$ validatehtml /var/www/html/index.html
[ERROR] The character encoding was not declared. Proceeding using “windows-1252”.
[ERROR] Element “head” is missing a required instance of child element “title”.
From line 2, column 7; to line 3, column 10
ml> <html> <body>Hello,
^^^^^^^^^^^
[WARNING] Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
From line 1, column 16; to line 2, column 6
TYPE html> <html> <
^^^^^^^
Make sure you have a fresh version of Stack or Cabal installed.
stack update
stack install html-validator-clior
cabal update
cabal install html-validator-cliUsage: validatehtml [-s URL] [-x DIR] FILE | DIR ...
-s URL --validator-url=URL validation service url (default: https://validator.w3.org/nu/)
-x DIR --exclude=DIR exclude files in DIR
-1 --oneline print each message on one line
FILE | DIR ...- Specify one or more HTML files to validate. When a directory is specified, all HTML files under that will be checked.
-s URL,--validator-url=URL- Specify the alternative validation service that uses The Nu Html Checker as its backend like follows:
- https://checker.html5.org/
- https://html5.validator.nu/
- or your self-hosted The Nu Html Checker instance.
- Specify the alternative validation service that uses The Nu Html Checker as its backend like follows:
-x DIR,--exclude=DIR- Specify the folder name that you want to exclude from checking.
-1,--oneline- Specify it if you want to print the validation result in compact format.
Copyright (c) IIJ Innovation Institute Inc.
Licensed under The 3-Clause BSD License.