LaserBlob provides a Blob model with SHA1-based deduplication, polymorphic attachments, and support for multiple storage backends (filesystem, S3). Includes automatic metadata extraction for images, videos, and PDFs.

Sphragis (Σφραγίς - Greek for 'seal') provides multi-provider PDF digital signatures. Supports hardware tokens (Fortify WebCrypto), cloud e-signatures (Harica), and more. Perfect for academic institutions and commercial use. Rails 6.1+ compatible.

A tool to combine PDF tools, OCR tools and image processing into a single interface as both a CLI and a library.

Convert YAML project files into a nice PDF

A minimal pure Ruby library for parsing and editing PDF AcroForm fields using only stdlib

Build a CV PDF from a yaml text file.

🥨 yaml-converter parses YAML files (with inline #note: annotations and validation markers) and emits polished Markdown, HTML, and PDF/DOCX (via pandoc) outputs including a validation status line, fenced YAML blocks, and extracted notes.

The Datalab gem implements a lightweight interface to the Datalab API. The Datalab API can convert a number of document formats, including PDF, Word and Powerpoint to Markdown. In addition in offers sophisticate OCR, layout and line detection for documents an images.

Turn markdown files into PDF book

Craft beautiful PDFs with Prawn and components

Tahweel is a tool for converting PDF files to txt, docx, or json using OCR through multiple engines, currently supporting Google Drive only.

HTML renderer for Prawn PDF with table support, forked from Prawn HTML

Extract text from images and PDFs stored in Active Storage using a high-performance Rust OCR server

Write your resume once in machine-readable YAML format and export it to HTML or PDF using custom themes.

Ruby interface for Adobe PDF Services API Document Generation

PDF rending plugin for Rails using FlyingSaucer originally from Tim Riley, changes from Nick Sieger and Yehuda Katz for rails3.

A very simple tool to index scanned documents in either PDF or image format

Interactive tool to rename pdfs based on author/title/year.

Ruby gem to generate automated test reports for academic assignments with HTML templates, CSV export, optional PDF (via prawn), class-wide reporting, and basic Jaccard code similarity.

Builds a database of bank account transaction history by reading PDF bank statements, and provides a simple web interface for browsing data.