Build legally compliant e-Tax Invoice & e-Receipt systems adhering to ETDA & Thai Revenue Department standards with iText Library, featuring embedded XML and cryptographic digital signatures.
As the Thai Revenue Department and ETDA enforce digital transformation for tax documentation, compliance with the PDF/A-3 (ISO 19005-3) standard is essential. PDF/A-3 provides a robust Hybrid Document architecture that encapsulates both human-readable visual pages and machine-readable structured data (ETDA-invoice.xml) in a single secure file.
AuthorWise Co., Ltd. is the official distributor of iText Library and Apryse Document SDKs in Thailand and Malaysia. We empower enterprises with localized licensing, compliance consultation, and integration engineering to generate legally certified digital invoices while protecting proprietary IP from AGPL open-source copyleft risks.
(AuthorWise - Official iText Licensing and e-Tax Invoice SDK Partner in Thailand)
High performance, strict ISO compliance, and enterprise cryptographic security for high-volume billing pipelines.
Generate compliant ISO 19005-3 hybrid documents embedding ETDA-invoice.xml payloads with strict schema validation and long-term archiving conformance.
Out-of-the-box support for digital signing, PKI certificate validation, timestamping (TSA), and tamper-evidence conforming to ETDA and Revenue Department requirements.
Engineered for high-volume enterprise throughput in Java and .NET environments, capable of generating tens of thousands of invoices per hour with minimal resource footprint.
Procuring commercial licenses through AuthorWise completely shields your proprietary ERP, CRM, and billing codebases from mandatory AGPL copyleft disclosure requirements.
Direct procurement through a trusted Thai entity with complete quotation, purchase order, and localized VAT tax invoice support.
Experienced software architects assist with API integration design, certificate infrastructure, Proof-of-Concept testing, and SAP/ERP connectors.
End-to-end automated emission flow for enterprise tax documents.
Extract billing records, line items, and VAT calculations from ERP/CRM systems via secure APIs or database connectors.
iText compiles the ETDA-invoice.xml data payload and renders high-fidelity Thai-font visual invoice layouts.
The XML file is embedded as an associated file inside the PDF/A-3 container with full ISO conformance metadata.
Apply cryptographic signatures using Hardware Security Modules (HSM) or tokens, distributing to buyers and Revenue portals.
PDF/A-3 allows arbitrary file attachments (such as XML) within an archival PDF. Thai tax regulations require both a visual presentation for human review and an ETDA-compliant XML data structure for automated government processing in one tamper-proof file.
The open-source version of iText is governed by AGPLv3, which requires any software interacting with it to disclose its entire source code. A commercial license from AuthorWise removes all copyleft restrictions, protecting your enterprise systems.
AuthorWise provides genuine license procurement, architectural guidance, sample integration code for PDF/A-3 with embedded XML, digital certificate setup assistance, and end-to-end consulting.
Contact AuthorWise specialists for technical architecture consultation, PoC assistance, and commercial iText licenses in Thailand.
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