UniDoc Review: Document Processing Library for Go

Key Features

• PDF Generation

  Creates PDFs from data for use in invoices, statements, and reports.

• Digital Signatures

  Supports PAdES-B and LTV-enabled signatures for documents.

• AI Extraction

  Extracts structured JSON from complex PDFs, including tables and forms.

• Office File Generation

  Supports the creation and editing of DOCX and PPTX files.

• HTML to PDF Rendering

  Converts HTML and CSS into PDF documents.

• Compliance Support

  Produces output compatible with PDF/A-1b, PDF/A-3, and PDF/UA standards.

Use Cases

• Automated Document Generation

  Turning application data into PDFs such as medical bills or bank statements.

• Regulatory Archiving

  Creating PDF/A compliant documents for long-term archival in legal or financial sectors.

• Secure Document Signing

  Applying digital signatures to contracts and official records.

• Data Extraction

  Pulling text, images, and structured data from existing PDF files into machine-readable formats.

FAQ

What is UniDoc?

UniDoc provides a suite of pure Go libraries, including UniPDF, UniOffice, and UniHTML, used to generate, edit, and extract data from PDF and Office documents.

Does UniDoc require a separate runtime like Java?

No, UniDoc is written in pure Go and deploys as a single binary, meaning it does not require a JVM, native binary, or REST sidecar.

Is there a free trial available?

Yes, UniDoc offers a 14-day free trial that includes all products and does not require a credit card.

Can UniDoc be used in air-gapped environments?

Yes, UniDoc offers an offline license key option that requires no network calls, which is designed for secure or air-gapped environments.