Collection of tools that make printing of plain text and images to one or many serial thermal printers easy. USB, serial (RS232) and TCP/IP printers are supported. Escper is useful for Ruby based Point of Sale systems that want to print receipts or tickets, but also suitable for stand-alone appli...

This gem providers a small server to allow linking to arbitrarily-sized placeholder images.

GitHub helper functions

This is a Rails Engine for https://github.com/dobtco/formbuilder.

Retrieves palette of main colors, merging similar colors using Lab color space.

Mayu Live is a live updating server side VirtualDOM framework for Ruby, inspired by modern frontend tools that exist in the JavaScript ecosystem.

Turn an image into an X,Y tile set for use with JS mapping libraries

An extension of Prawn that improves the performance when embedding PNG images containing an alpha channel

Skyline is an extremely flexible and expandable open source content management system. Its feature rich interface allows for fast and intuitive management of websites.

A sprite generation tool

Turn an image into an X,Y tile set for use with JS mapping libraries

A barcode and QR code library that works with regular Ruby (not just JRuby). This gem comes bundled with ZXing C++ (zxing-cpp) and interfaces with it using FFI. As such this gem works with most major Ruby distributions.

A barcode and QR code library that works with regular Ruby (not just JRuby). This gem comes bundled with ZXing C++ (zxing-cpp) and interfaces with it using FFI. As such this gem works with most major Ruby distributions.

A barcode and QR code library that works with regular Ruby (not just JRuby). This gem comes bundled with ZXing C++ (zxing-cpp) and interfaces with it using FFI. As such this gem works with most major Ruby distributions. Modified to not require CMake as a build dependency.

An extension of Prawn that improves the performance when embedding PNG images containing an alpha channel

Removes stamps and watermarks from scanned images for OCR, 'removes specks'

Tile images for deep-zoom.

Generates Sass-based Ext themes. Includes methods for colorizing themes.

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https://github.com/0dayinc/pwn/README.md