SUP Validator

SUP (Simple Update Protocol) is a simple and compact "ping feed" that web services can produce in order to alert the consumers of their feeds when a feed has been updated. This reduces update latency and improves efficiency by eliminating the need for frequent polling.

This validator can be used to verify that your SUP feed is well formed. To learn more about SUP, see the documentation or the SUP FAQ. This source code for this validator is available here.

Validate by URI

Validate by Input