Much longer explanation of the example!

pdf renderer for rails

Uses wkhtmltopdf to create PDFs using HTML, add :exe option

Use phantomjs to gneerate pdfs

Validate PDF files for PDF/A conformity.

A framework for creating e-books from Markdown/Textile text markup using Ruby. Using the Prince PDF generator, you'll be able to get high quality PDFs. Mac users that have Textmate installed can have source code highlighted with his favorite theme.

rpdf2txt will turn a PDF-file into a textfile.

This generator is based on the binaries of the wkhtmltopdf.org.

A lightweight Ruby gem for rendering PDFs with Chrome Headless

Simple tool to extract Table Data from PDFs

Run your own html-to-pdf server for free on Heroku.com

Turn your Rails actions/views into PDFs without a web browser

Tool to convert PDF files, to make them more readable on Barnes & Nobel Simple Touch Nook reader and maybe some other small e-ink readers with 6" screen…

Add PDF 'images' as images in prawn documents

Examine all PDF files in Look up directories, remove password (if has one), rename and copy to a new directory using regular expressions.

Ruby wrapper for the awesome pdf2htmlex

This gem is very efficient for the case when we need to replace any text with image within the pdfs. This gem also allows to replace multiple texts with any image in single call.

Generate PDFs from HTML/CSS with middleman

If you want to automate, 1. Split pdf to under 50mb. 2. send these pdfs to your kindle email address, this gem is the one.

This gem provides a simple interface to merge, stamp, split PDFs using https://github.com/ant31/pdfserve API.