neural network ruby implementaiton

Visual regression testing for Capybara specs

Generate images of Ruby source code that focus on identation. Discuss on the style and find heavy blocks with ease.

A ruby CMS...

PalletePNG is a pure-ruby library that make it possible to render the transparent of a pallete-based PNG in PDF by converting the color-mode of the image.

a pattern generator for compass

Simple library to checks whether the margins are clear in a PDF

JRuby-only DSL for filling out AcroForms PDF and XFA documents

Pixavatar is a simple placeholder image generator that can be used as filler images where avatar images are missing

Use a virtual CRT for old school graphics programming, in VS Code, from Ruby.

Based on the idea of a simple server protocol to collaborate on a shared canvas named [Pixelflut](https://cccgoe.de/wiki/Pixelflut) this gem implements a fast Ruby client version.

This simple program compares two 'png' images, says whether they are different or not and outputs a difference file. Please see '/lib/png_comparison.rb' file or run 'rdoc' for this gem for more details.

Encode/decode arbitrary data within the PNG file format

Ruby Gem to generate PNG files with QR codes in them

Stitches an array of PNG blogs into one

Poly is a Ruby CMS with smart asset compiling and much, much more.

Polymer simplifies the creation of sprite images for web applications, while also generating nifty Sass mixins. CSS files are available for non-Sass users.

Html based, ie client side, printing for orders. Different styles are invoice, packing slip and receipt (for receipt printer in shop). Easy to configure and adapt

A pure Ruby baseline JPEG encoder and decoder with no native dependencies.

Quite OK Image Format Implementation in pure Ruby