Chilkat Library for Ruby - FTP, SSH, SFTP, PDF, SMTP, POP3, IMAP, SSL, TLS, HTTP, RSA, Encryption, Zip, Compression, XML, ...

Slaw is a lightweight library for rendering and generating Akoma Ntoso acts from plain text and PDF documents.

A nifty gem, in pure Ruby, to parse PDF files and combine (merge) them with other PDF files, number the pages, watermark them or stamp them, create tables, add basic text objects etc` (all using the PDF file format).

HexaPDF is a pure Ruby library with an accompanying application for working with PDF files. In short, it allows creating new PDF files, manipulating existing PDF files, merging multiple PDF files into one, extracting meta information, text, images and files from PDF files, securing PDF files by encrypting them and optimizing PDF files for smaller file size or other criteria. HexaPDF was designed with ease of use and performance in mind. It uses lazy loading and lazy computing when possible and tries to produce small PDF files by default.

HexaPDF is a pure Ruby library with an accompanying application for working with PDF files. In short, it allows creating new PDF files, manipulating existing PDF files, merging multiple PDF files into one, extracting meta information, text, images and files from PDF files, securing PDF files by encrypting them and optimizing PDF files for smaller file size or other criteria. HexaPDF was designed with ease of use and performance in mind. It uses lazy loading and lazy computing when possible and tries to produce small PDF files by default.

Collection of tools and classes that help to identify formats of binary files and create derivative copies (e.g. PDF from Word).

An add-on converter for Asciidoctor that converts AsciiDoc documents to PDF using the Prawn PDF generation library.

mn2pdf converts Metanorma XML into PDF. This gem is a wrapper around mn2pdf.jar available from https://github.com/metanorma/mn2pdf, with versions matching the JAR file.

Aspose.PDF Cloud is a REST API for creating and editing PDF files. Most popular features proposed by Aspose.PDF Cloud: PDF to Word, Convert PDF to Image, Merge PDF, Split PDF, Add Images to PDF, Rotate PDF. It can also be used to convert PDF files to different formats like DOC, HTML, XPS, TIFF and many more. Aspose.PDF Cloud gives you control: create PDFs from scratch or from HTML, XML, template, database, XPS or an image. Render PDFs to image formats such as JPEG, PNG, GIF, BMP, TIFF and many others. Aspose.PDF Cloud helps you manipulate elements of a PDF file like text, annotations, watermarks, signatures, bookmarks, stamps and so on. Its REST API also allows you to manage PDF pages by using features like merging, splitting, and inserting. Add images to a PDF file or convert PDF pages to images.

A Rails renderer for Prawn PDFs.

DANFE pdf generator for Brazilian invoices.

The PDF::Reader library implements a PDF parser conforming as much as possible to the PDF specification from Adobe

With this SDK, you can seamlessly integrate GroupDocs’ document collaboration tools into your Ruby web or mobile application. The tools enable end users to view, securely share, collaboratively annotate, e-sign, assemble, convert and compare over 50 common document and image types (including PDF, Microsoft Office and CAD), all from within your Ruby application and without having to install any office suites or browser plugins. For more details, please visit: http://groupdocs.com/cloud/total-api

Generates API documentation in PDF, HTML, JSON, YAML format for integration tests written with RSpec

Transform HTML into PDF/PNG/JPEG using Google Puppeteer/Chromium

The Pdfcrowd API lets you easily convert between HTML, PDF and various image formats.

This gem allows you to render SVG directly into a PDF using the 'prawn' gem. Since PDF is vector-based, you'll get nice scaled graphics if you use SVG instead of an image.

Wicked PDF uses the shell utility wkhtmltopdf to serve a PDF file to a user from HTML. In other words, rather than dealing with a PDF generation DSL of some sort, you simply write an HTML view as you would normally, and let Wicked take care of the hard stuff.

Brazilian Fiscal Documents PDF generator

Use GrabzIt to convert HTML or URL's into images, PDF, videos, rendered HTML or DOCX. These captures have highly customizable options include altering quality, delay, size, browser type, geographic location and much more. Additionally GrabzIt can even convert HTML tables on the web into a CSV or Excel spreadsheet. As well as enabling online video's to be converted into animated GIF's.