[tam-vo/sprite-factory v1.6.4.5] Combines individual images from a directory into a single sprite image file and creates an appropriate CSS stylesheet

Cocoa image processing

Extracts all images from a given Word document.

A simple image-based CAPTCHA engine for Rails 6+, works offline and supports Devise integration

Ruby library providing image rendering described by dynamic templates

The idi_captcha_generator gem provides a customizable CAPTCHA solution tailored for high-traffic applications, ensuring that only legitimate users can access features like sign-up and login forms. By leveraging image-based questions, it prevents automated systems from bypassing security measures....

Image server proxy that can resize images on the fly. Built in ruby as a Rack application.

Extract color swatches and full palettes from images with imagemagick

Mappr is a service and application that combines images from Flickr with geolocational information. The Mappr ActionScript 3.0 API gives you access to Mappr's geo-tagged image data.

ImageScience is a clean and happy Ruby library that generates thumbnails -- and kicks the living crap out of RMagick. Oh, and it doesn't leak memory like a sieve. :) For more information including build steps, see http://seattlerb.rubyforge.org/

Similatron reports similarities between images, PDFs, or plain text files.It's particularly useful for tests for image generating functionalities

Image Parsing Gem for PPM, BMP(todo) and PTF files.

The plugin reads all images in a directory and saves optimized versions of them in another directory.

Generates @1x, @2x and @3x images versions of an image for iOS projects

Uses command-line ImageMagick tools to resize, rotate, and mogrify images.

Skel-Generator for Webbased Image-Galleries

Gem for storing and manipulating raw, uncompressed bitmap images

Extend sprockets pipepline by image compression

Image Tools.

Generate placeholder images of various sizes, colors, and text colors.