Kubernetes Deployment Tool: build docker image, compile Kubernetes YAML files, and apply them

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

AsposeImagingJava is a Ruby gem that helps developers create, edit, draw or convert images using Aspose.Imaging for Java libraries

Drop-in image thumbnailing middleware for your Rack stack (Merb, Sinatra, Rails, etc).

Free Online OCR for Ruby - Convert images to text

A Ruby library for prying open files you can convert to a previewable format, such as video, image and audio files. It includes a number of parser modules that try to recover metadata useful for post-processing and layout while reading the absolute minimum amount of data possible.

A Paperclip mix-in to allow auto-generation of resized images

reposting with fixes because he abandoned this project.

file upload and rmagick image resizing

Ruby (and Rails) Gravatar helpers with unique options like Proc's for default images, support for gravatar.com's multiple host names, ability to define reusable styles and much more...

Miso is a unified API for simple image operations commonly used on the web.

Use MiniMagick to crop and resize images in your Jekyll project.

A IIIF image server

Lazybox is a jQuery-based, lightbox that can display entire remote pages, images and confirmation dialogs. Replace standard rails confirmations with lazybox just added several rows to your project. Use lazybox with rails assets pipeline.

Drop-in image thumbnailing for your Rack stack.

Paperclip processor that is aware of the faces detected on the image so that they don't get cropped or aren't shown too small while generating the thumbnails

Want beautiful copyright-protected browser-compatible custom-smoothed & kerned fonts? Magick Title delivers just that by using imagemagick to generate titles based on the options you provide.

Tile images for deep-zoom.

layzr-rails project integrates Layzr JS for Rails image_tag helpers

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