Create and manipulate PDFs, merge documents, digitally sign, create and fill AcroForm fields, generate PDF/A and PDF/UA archival/accessible output, encrypt (including FIPS-compliant crypto), generate barcodes, embed SVG, and redact content — the core feature set of the modern, actively-developed iText line. Separate official add-ons extend it further: pdfOCR (Tesseract- or ONNX-based optical character recognition) and pdfHTML (HTML/CSS-to-PDF conversion), both maintained by the same organization rather than third-party plugins.
Flagship successor to itextpdf (iText 5), currently at major version 9 (same repo, versioned in place — not a separate 'iText 9' project). Dual-licensed AGPL (open source) / commercial — AGPL requires derivative works to also be AGPL-licensed.