JSON to PDF API — On-Premise Custom Templates · Offline · No storage

Runs on your own infrastructure One-time license · No subscription · Runs fully offline

Technical demo (sandbox)

The JSON can be freely modified. You can add as many fields into the JSON-strcuture as you want.

Installation Documentation

Core System Features

REST API for PDF generation

Automated PDF generation from structured JSON data via a local REST interface.

On-premise operation

Operates entirely on customer-owned infrastructure. No cloud services or external dependencies.

No PDF storage

Generated PDFs are streamed directly to the client and are never stored on the server.

Audit logs, retention and dashboard

OnPremPDF provides an administration interface with audit logs, retention policies, and system statistics.

Typical Use Cases

  • Automated generation of notices and official letters
  • PDF creation from backend and business systems
  • Structured document generation from JSON data
  • Use in internal or isolated networks

Security and Privacy

  • Server-side PDF generation via a local REST API
  • Generated PDFs are streamed directly to the client and are not stored on the server at any time.
  • Processing of incoming data exclusively in memory (no persistence)
  • No storage of user data or document content after PDF generation
  • Anonymized operational logs with configurable retention (default: 30 days)
  • Designed for GDPR-compliant deployments in isolated, offline environments

The demo runs in a public sandbox. Production deployments are fully on-premise.

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