Tamperlens
Document structural inspection service that analyzes PDF paint order, detects fraud, and outputs risk signals via JSON API.
Open productWhat it does
About Tamperlens
Tamperlens is a document structural inspection service built and operated by Douglas Haruo in Curitiba, Brazil. Designed for KYC, AML, tax compliance, and customer onboarding workflows, the service analyzes submitted PDF documents such as bank statements, payslips, and proof of address files. It inspects paint order to verify whether redacted text was fully removed or covered by a visual shape, and utilizes private issuer baselines to spot clean, scratch-generated document fraud. Documents sent over HTTPS are parsed entirely in memory and never written to disk. Rather than returning binary verdicts, Tamperlens delivers JSON reports containing structural risk signals, technical evidence, and benign context via an HTTP POST API.
- Availability:
- launched
- Access:
- freemium
- Format:
- service
- Platform:
- api
Pricing at launch: Offers non-expiring credit packs of 500 or 2,500 document checks alongside monthly subscription options.
Core capabilities
PDF Paint Order Inspection
Inspects the internal paint order of PDF files to verify whether redactions completely removed target text or merely placed visual elements over it.
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