aeolus-image is a Ruby library used by Conductor to connect with Image Factory and Image Warehouse.

Convert various files like MS Word, Excel, PowerPoint, Images to PDF and Images. Create PDF and Images from url and raw HTML. Extract and create PowerPoint presentation from PDF. Merge, Encrypt, Split, Repair and Decrypt PDF files. All supported files conversions and manipulations can be found at...

Extract the dominant colors from an image.

A simple image optimizer

Retina Rails makes your application use high-resolution images by default. It automatically optimizes uploaded images (CarrierWave or Paperclip) for retina displays by making them twice the size and reducing the quality.

Extract Curves a simplistic GTK Ruby-based appliaction which can convert the raster image file result of a geometric-trace-producing process's interaction with the characteristic of motion of another (interesting) process into a list of rectangular coordinates (in raster image's system) represent...

From lazy loading, to inline image contents, to fetching unknown width and height, to next generation image formats, this gem aims to extend the default image_tag method to do more for static web pages.

Using LibVips to process images, Social::Images generates images for use on social media accounts using a simple API.

simple-images-downloader allows to download images from a file containing list of urls to those images.

PicasaPlucker downloads all images from a Picasa web album. Your friends use Picasa (http://picasaweb.google.com) but you don't, so you can't easily download all the images in their albums? PicasaPlucker fixes that. PicasaPlucker takes the URL of someone's Picasa album, and downloads all the or...

One important feature of DHTML is it's ability to move elements around the page freely, without having to be tied down to one single spot on the page. "Virtual Max" took full advantage of this feature and created his cool "floating images" script for our Dynamic Drive surfers to use and enjoy. It...

Extract Curves a simplistic GTK Ruby-based appliaction which can convert the raster image file result of a geometric-trace-producing process's interaction with the characteristic of motion of another (interesting) process into a list of rectangular coordinates (in raster image's system) represent...

Optimize image assets using image_optim

Why make the browser load images that the user isn't going to see? This Rails engine prevents images from loading until they're actually going to be displayed. This saves bandwidth, reduces server load, and helps the user stay under their data quota.

A high-resolution image is loaded when the retina_image_tag is called from a retina display

Fotofetch searches for and brings in images. Fotofetch searches for and brings in images. Fotofetch searches for and brings in images.

This gem allows you to describe your images using ruby code. You can use rasem to draw complex images using small portions of ruby code

Official Image field plugin for Administrate

Jcrop plugin for ActiveAdmin, enable image cropping solution on image fields

A configurable and documented Rails view helper for adding gravatars into your Rails application.