5 tools
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.
CLightweight, fast C library, desktop viewer, and CLI toolset for PDF, XPS, and e-book formats, built by Artifex around the same rendering core used in Ghostscript. Renders pages and extracts text/images/metadata/structured content; creates, splits, merges, and compresses PDFs; adds annotations (highlights, stamps, shapes); permanently redacts content; and digitally signs documents. Converts between PDF, SVG, PNG, HTML, and PostScript, and embeds into web pages and native apps via its library bindings.
PDF watermark-removal library/CLI targeting academic-publisher watermarks (institution names, personal identifiers, IP addresses, timestamps) for AIP, IEEE, JSTOR, RSC, and SPIE papers; also removes arbitrary user-specified strings from page content and/or XMP/DocInfo metadata, with in-place overwrite support.
PythonPython bindings for MuPDF covering text extraction (plain, rich dictionary with font/size/color/bbox, HTML/XML, raw blocks, table-to-Markdown); embedded image extraction and high-DPI page rendering to Pixmaps; Tesseract-based OCR (100+ languages); reading/writing annotations (highlights, notes, stamps, ink) and redactions (with permanent apply); AcroForm reading and filling; page insert/delete/reorder, merge/split, and metadata editing; PDF creation and Markdown-to-PDF conversion; password protection/RC4/AES encryption; hyperlink and cross-reference handling; and outline/bookmark read-write.
JavaSelf-hostable PDF toolkit with 50+ tools: edit, merge, split, sign, redact, and convert PDFs; OCR scanned pages; compress files; validate signatures; apply watermarks; and automate workflows via no-code pipelines, a REST API, and webhooks. Offered as a browser-based UI, desktop client, or self-hosted server (incl. air-gapped deployment).