SAML Response Decoder
Decode Base64 SAMLResponse data and turn dense assertion XML into readable issuer, subject, session, audience, attribute, and signature details.
Detail-first View
The main output removes XML noise and presents the response as readable SAML fields.
Attribute Focused
NameID, attributes, audiences, session times, recipients, and status values are pulled into structured tables.
XML When Needed
Pretty XML remains available as a secondary view for support tickets and protocol debugging.
SAML Response Decoder Guide
What to paste
Paste a raw Base64 SAMLResponse value, a form body containing SAMLResponse=, a redirect URL containing the parameter, or raw SAML XML.
What the details view extracts
The decoder reads the response issuer, status, destination, assertion ID, NameID, subject confirmation, validity windows, audiences, authentication context, attributes, signatures, and encrypted assertion markers.
Signature warning
This tool detects signature elements and algorithms, but it does not validate trust, certificate chains, digest values, or XML signature integrity.
Privacy
All parsing runs in the browser. SAML responses can contain user identifiers and attributes, so treat decoded output as sensitive.