What it checks
Format, version, item count, freshness, redirects, feed discovery, duplicate IDs, and media attachments.
Free RSS validator
Check whether a feed works before you add it.
Test RSS, Atom, RDF, JSON Feed, or a webpage that advertises a feed. RSS Mixer checks it through the same safety-bounded parser used by the combiner.
Validate a feed URL
Enter one public feed or webpage URL. Submitted URLs are not sent to analytics.
Safe public fetching
Private networks, oversized responses, excessive redirects, and slow sources are blocked or bounded.
Ready to combine?
After a successful check, carry the URL into the RSS feed combiner.
Useful checks
Validate the URL you will actually use.
Direct feed or normal webpage
Paste an RSS, Atom, RDF, or JSON Feed URL. You can also paste a webpage when you want RSS Mixer to look for an advertised feed link.
What a valid result means
The source was publicly reachable, passed RSS Mixer's network safeguards, and parsed as a supported feed. It does not certify publisher identity, copyright permission, future availability, or every optional extension.