Resizes and delivers images using the refile gem.

Extensible/customizable/programmable thread/post/image memoizer for imageboards.

Ruby gem for adding width and height attributes to image tags within HTML blocks

Using paperclip to generate images from sensible attributes like e-mails and telephone numbers, in order to reduce crawler's success

Crawl a site and check various health indicators, such as: HTTP 4XX, 5XX status, valid HTML/XML/JSON. Missing image alt attributes/missing HTML title/description.

Combines PhantomJS and Imagemagick to provide screenshot-based comparison for CSS regression testing

Generate random avatar images for your tests

Setup an AVCaptureSession with video, multiple cameras, and still image capabilities. You can also easily have touch-to-focus and flash-on-picture features.

Simple similarity calculation method of image

Script to download all images

Simple and stupid bitmap implementation (bitmap as in bitset, not bitmap image)

Bizarroids Slider provides user managable collections of images.

It posts image according to the pattern in the room

Blobsterix is a transcoding, caching, storage server that can transform your blobs (images, pdf, ...) at request time.

Adds SVG helpers and on-the-fly generation of fallback images to rails

This is an enhanced version of the mini_magick gem which optimizes analysis of image files.

A Rails 3 gem plugin for plugins to serve images, javascripts and stylesheets from thier own public directory

Extraction of MRI metadata and insertion into compatible sqlite3 databases.

Abstracts the methods from different image services, like Flickr and Picasa

Part of the 'buddies' gem that aims to bring some common social features to a rails site. Buddies avatar gem provides user avatar and cropping feature. Image cropping technique is credited to railscasts.com