Uses ImageMagick and pig.js to create progressive image galleries for Jekyll pages

GK Jekyll Image Tag

GK Jekyll Picture Tag

The Greatest Jekyll Plugin in the World

Liquid filter to resize images

Use MiniMagick to create the image sizes that you need. A fork of jekyll-minimagick.

Provides a block that can take a source image and generate it to all sizes for srcset usage

A Jekyll plugin to generate image thumbnails with specified width.

Easy upload management for ActiveRecord

Upload files in your Ruby applications, map them to a range of ORMs, store them on different backends.

kcy2

Ease generating image previews (thumbnails) of various files

Cut down your assets/images to a web-friendly sizes

A full Rails engine providing e-commerce functionality for any Rails 4 application.

Knigodej gem is a tool to make a PDF, and DJVU books from the XCF (GIMP image) source

komic-cli

A set of generators for various projects I work on.

A basic UI starter kit - rails engine with useful helpers and bootstrap based UI modules

This plugin offers a rails engine for the bitcrowd sir trevor fork. With Image Upload and lots of other customizations to sir trevor.

Lanes is a framework for writing single page web applications. It's a full stack framework that contains both server and client.