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/

This gem allows you to render SVG directly into a PDF using the 'prawn' gem. Since PDF is vector-based, you'll get nice scaled graphics if you use SVG instead of an image.

Jekyll Picture Tag adds responsive images to your Jekyll static site. It automatically creates resized source images, is fully configurable, and covers all use cases, including art direction and resolution switching, with a little YAML configuration and a simple template tag.

Jekyll Picture Tag is a liquid tag that adds responsive images to your Jekyll static site. It follows the picture element pattern, and polyfills older browsers with Picturefill. Jekyll Picture Tag automatically creates resized source images, is fully configurable, and covers all use c...

Automatically transforms urls (via domain) and includes the destination resource (Vimeo, YouTube movie, image, ...) in your document

Uses wkhtmltoimage to create Images using HTML

Wrapper on ffmpeg and imagemagick to convert .mov to .gif

LiveReload is a Safari/Chrome extension + a command-line tool that: 1. Applies CSS and JavaScript file changes without reloading a page. 2. Automatically reloads a page when any other file changes (html, image, server-side script, etc).

Captcha Gem for Rails, which generates captcha image by Rust.

Send image/video to an airplay enabled device

Attach images to pages ins Refinery CMS

Precompiled binaries for image_optim: advpng, gifsicle, jhead, jpeg-recompress, jpegoptim, jpegtran, optipng, oxipng, pngcrush, pngout, pngquant

A beautiful WYSIWYG editor with image uploads for Rails (backported to Rails 3).

A beautiful WYSIWYG editor with image uploads for Rails.

Encode an image as a small string that can saved in the database and used to show a blurred preview before the real image loads

Measure following file dimensions: apng, avif, bmp, cur, emf, gif, heic, heif, ico, j2c, jp2, jpeg, jpx, mng, pam, pbm, pcx, pgm, png, ppm, psd, svg, swf, tiff, webp, xbm, xpm

Sass functions and mixins to inline images and get images size

vagrant plugin which save details about added box image (image creation timestamp image source path), during start of virtual machine checks the source url of a box image for updates (use 'Last-Modified' header to detect changes), notify user and perform interactive download of the box image if u...

Ruby gem generating thumbnail images from a given URL.

The Ultimate Gravatar Gem! This gem is used to interface with the entire Gravatar API: it's not just for generating image URLs, but for connecting to and communicating with the XML-RPC API too! Additionally, it can be used to download the Gravatar image data itself, rather than just a URL to tha...