Verify PDF signature

POST /v1/pdf/verify-signature  ·  1¢

Check digital PDF signatures: who signed (certificate), when, and whether the document is unchanged since signing. No CA trust-chain validation – the response says so explicitly.

Parameters

Name	Type	Description
file	file · required	PDF to check.

Example request

curl -X POST https://api.bigapi.dev/v1/pdf/verify-signature -H 'Authorization: Bearer $KEY' -F 'file=@contract.pdf'

Example response

{
  "signed": true, "signature_count": 1,
  "signatures": [ {
    "signer": { "common_name": "Jane Doe", "organization": "Acme", "self_signed": false },
    "integrity": { "digest_matches": true, "byte_range_covers_document": true }
  } ],
  "trust_note": "Integrity check without CA chain validation..."
}

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