RSS Feed Validators determine if your feed is valid.
Validator - This is a validator for syndicated feeds. It
works with RSS 0.90, 0.91, 0.92, 0.93, 0.94, 1.0, and 2.0. It also
validates Atom feeds. If the validator finds any problems in your
feed, it will give you messages for each type of problem and highlight
where the problem first occurs in your feed. If you're unsure what
a message means, click the "help" link next to the message for a
Validator - Feed validation service, enter the url and it
would evaluate validity of feed RSS v9x validator.
Validator - a free service that checks documents like HTML
and XHTML for conformance to W3C Recommendations and other standards.
RSS 1.0 Validator - Enter the address of an RSS 1.0 feed
into the following form and it will be validated and formatted for
1.0 Validator - This prototype is based around a Schematron
schema for validating RSS 1.0 by Leigh Dodds.