Blank Paper Validation API
Detect whether an uploaded image is blank paper rather than a real document, catching failed captures before processing.
What the Blank Paper Validation API does
Blank Paper Validation examines an uploaded image and reports whether it is plain blank paper rather than an actual document.
It sounds trivial and it is quietly valuable. Blank or near-blank uploads are common, whether accidental or deliberate, and catching them at capture is far cheaper than letting them fail deep inside a verification pipeline.
Where teams use the Blank Paper Validation API
Rejecting empty uploads before OCR processing
Giving customers immediate feedback on a bad capture
Filtering junk submissions from a document queue
Reducing wasted processing on unusable images
Frequently Asked Questions (FAQs)
Why is this needed?
Blank uploads happen constantly, from misfires and from users trying to move past a mandatory step. Catching them at capture avoids confusing downstream failures.
Does it identify the document type?
No. Use the KYC Document Classifier for that. This answers only whether there is a document present at all.
Where should it run?
Immediately on upload, so the customer can retake the photo while they are still in the flow.
Related APIs
- Face Liveness API Detect whether a face is a real, live person rather than a photo, video or mask, blocking presentation attacks during onboarding.
- E-Aadhaar Verify API Extract and verify Aadhaar details from an uploaded e-Aadhaar document, combining extraction with validation in one step.
- KYC Document Classifier API Automatically identify whether an uploaded document is an Aadhaar, PAN, passport, voter ID or driving licence before extraction.
- Aadhaar Validation API Verify an Indian Aadhaar number instantly and confirm it is valid and in use, with essential identity insights for faster, safer customer onboarding.
Start verifying with the Blank Paper Validation API
Book a walkthrough and we will show the call, the response and how it fits your onboarding flow.
- One API key for every check
- Verified against official Indian records
- Built for onboarding at scale