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Documents & Biometrics

Signature Match API

Detect the signature in a scanned form or cheque, compare it with the specimen on file and return a similarity score with a match verdict, replacing eyeball checks in operations teams.

Response
Real-time
Inputs
2 required · 1 optional
Consent
Not required
Billing
Per successful call
Get API access API reference
POST /v1/signature-match
Sandbox · Production

  1. Your application sends

    • Reference signature image*
    • Document image*
    • Match threshold (0–100)

  2. Profiden API

    Validates the request, queries the source, normalises the answer and logs the call. Billed only on success.

  3. Verified with

    Authoritative source

  4. You receive

    • Match verdict
    • Similarity score
    • Signature detected
signature-match Full reference

What the Signature Match API does

Upload two images: the reference specimen and the document carrying the signature to verify. The API locates the signature, normalises it and returns a confidence score with a configurable threshold verdict.

Benefits of the Signature Match API

Compare a signature on a document with a reference specimen and get a match score.

Objective score

A number, not an opinion, for every signature comparison.

Instant

Runs inside the same call as your document upload.

Use cases

Signature Match API use cases

Where the Signature Match API is typically called, and what it settles there.

Cheque and mandate processing

Match against the account specimen before clearing.

Loan and insurance forms

Confirm the applicant signed every page.

How the Signature Match API works

Request and response details, environments and a ready-to-import collection are in the developer console at console.profiden.com.

01

Authenticate

Call with your organisation API key. Sandbox and production use the same contract.

02

Send the inputs

Reference signature image, Document image as a JSON body. Optional fields sharpen the match.

03

We verify at source

Profiden queries the authoritative record, normalises the answer and logs the request.

04

Act on the result

A verification status plus the fields listed above, in the same response envelope as every other API.

Open the Signature Match reference

Built for the DPDP Act 2023

Consent recorded · Payloads not retained beyond your retention window · Every request traceable

Encryption in transit and at rest
Data processed in India
Per-request audit trail
Masked identifiers in responses

Signature Match API: frequently asked questions

What teams ask before adding the Signature Match API to their integration.

JPEG, PNG and PDF pages. Send the highest resolution you have; scans at 200 dpi or above give the most stable scores.

Related APIs

APIs that usually run alongside the Signature Match API, on the same key.

All APIs

ID Document OCR

Documents & Biometrics

Extract structured data from Aadhaar, PAN, passport, DL, voter ID and more.

Face Match

Documents & Biometrics

Compare a selfie to the photo on an ID document or KYC record.

Document Tamper Check

Documents & Biometrics

Detect edited, forged or template-generated documents before you trust their contents.

More Documents & Biometrics APIs

Get access to the Signature Match API

Tell us your use case and expected volume. We set up the organisation, share per-call pricing and issue keys.

Get API access Developer console