13 tools
Command-line tool to merge, split, and rotate PDFs; fill forms with FDF/XFDF data and flatten them (or generate an FDF stencil); encrypt/decrypt with passwords; add watermarks/stamps; manage bookmarks, metadata, and attachments; repair damaged PDFs; and recompress page streams.
C#Free GUI front-end for the PDFtk command-line tool on Windows: split, merge, stamp, add page numbers, rotate, edit metadata, bookmarks, and attachments — all via a graphical interface over PDFtk.
Fluent-API PDF generation library for .NET: page layout, headers/footers, tables, columns, sections, watermarks, text/fonts/colors/backgrounds/borders, images, SVG, alignment/padding/scaling/rotation/layering, loops/conditionals/reusable components for data-driven documents, merging, encryption, metadata, page extraction, and PDF/A, PDF/UA, and EN 16931 (e-invoicing) compliance.
ClojureGenerates PDFs from Clojure data structures: text/typography with custom TTF fonts, CSS-like stylesheets, lists, tables, multi-column layouts, SVG and image embedding, bar/line/pie charts, headers/footers, page numbering, document metadata, file attachments, and watermarks.
GoGo PDF library (pure Go): generates reports/invoices with styled text and tables; creates and fills forms; merges, splits, reorders, and rotates pages (incl. N-up layouts); extracts text (with position/formatting), images, and tabular data to CSV; adds/converts images to PDF; removes or adds password protection; validates and applies digital signatures; compresses/optimizes files; adds watermarks; and supports CCITTFax/JBIG2 image decoding.
GoGo PDF processor (CLI + library) supporting PDF up to 2.0 (ISO 32000-2): validate, optimize, split, trim, and merge PDFs; encrypt/decrypt; resize, rotate, and crop pages; extract/manipulate images, fonts, and metadata; manage attachments and portfolios; validate, report, and remove digital signatures; add/remove stamps and watermarks; process forms, bookmarks, and annotations; and generate booklets, N-up/N-down layouts, grids, and posters.
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).
PHPWrites and reads OOXML (Word 2007+), ODF (ODT), RTF, HTML, and PDF documents: sections with headers/footers/page numbering, styled text runs and paragraphs, tables, images (local/remote/watermark), drawing shapes, charts (pie/bar/line/area/scatter/radar), OLE objects, TOCs, footnotes/endnotes, form fields, lists, template-based generation, and XSL transforms.
PHPConverts XML (or Markdown) documents to PDF or images (JPEG/PNG via GD/Imagick/Gmagick) with HTML-like tags (div, p, table, headings, lists, images, links); supports auto-breakable/fixed pages, multi-column layouts, headers/footers/watermarks, page numbering, metadata, internal/external links, bookmarks, sticky notes, barcodes (via Zend), simple pie charts, borders, backgrounds, rotation/transparency, and stylesheets; usable via web or CLI, with Symfony2 integration.
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.
PythonDjango-friendly wrapper around ReportLab for generating PDFs: report and letter templates (including a confidential-report variant with security markings), headings/paragraphs/lists/tables/rules/spacers/page breaks, a predefined style system, SVG drawing (via svglib), watermarks/confidentiality markers, mini-HTML markup, and direct ReportLab canvas access.
Reads and writes PDFs: subset/merge/rotate pages, modify metadata, build reusable Form XObjects, N-up and booklet layouts, watermarking (overlay/underlay), image and Form-XObject extraction, poster-sized output, and splitting 2-up PDFs; integrates with ReportLab (embedding existing PDF content into newly generated documents) and rst2pdf. No encryption/decryption support, and limited compression-filter support (external tools like pdftk needed for full decompression).
Pure-Ruby (no external dependencies) library to merge PDFs, extract and recombine specific pages, overlay watermarks/stamps (e.g. logos), and add customizable page numbering; parses PDFs from files, memory, or remote sources. The maintainer has stepped back from active maintenance and is seeking a new steward.