Validators
RSS & Atom Feed Validator
Validates RSS 2.0 and Atom 1.0 feeds in your browser: detects feed format, checks required elements (title, link, description for RSS; id, title, updated for Atom), validates item/entry counts, flags duplicate guids, and pre-fills the W3C Feed Validation Service for an authoritative second opinion.
Input
Invalid
Format
unknown
Items
0
Errors
1
Warnings
0
Issues
- errorXML parse failure: DOMParser is not defined
What this checks
- XML is well-formed.
- Detects RSS 2.0 vs Atom 1.0.
- RSS:<channel> has title/link/description, link is a valid URL, items have title or description, guid uniqueness, RFC 822 dates.
- Atom:<feed> has id/title/updated, ISO 8601 dates, entry uniqueness, recommends
rel="self"link.
For an authoritative second opinion, also run the W3C Feed Validation Service. Some checks (relative link resolution, namespace prefixes) require a fully deployed URL.
Verify on a real URL
Run a full agent readiness scan to see how your live site responds end to end.