Analysis tool for investigating screenshots taken over a session

Detects a dark color based on luminance W3 standarts ( https://www.w3.org/TR/WCAG20/#relativeluminancedef ). It has these options: * is a hex color dark * is an Imagick pixel dark * is an Imagick pixel from a blob dark * is an area in a blob over a dark background (uses Imagick for it too). An example practical aspect: it can be useful to understand will a black colored text be visible or not over an area.

A Ruby library to generate images of guitar chords

Make jani(https://github.com/shin1ohno/jani) strip from movie file.

Adds a fractal generator, and corresponding controller for Jax projects. Also adds a Heightmap model for Jax.

Drop in rmagick sprite engine for compass

A plugin for Jekyll to easily generate sharable images for your posts.

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

Yet another jekyll photo gallery generator with thumbnails.

Use smartcropper and rmagick to crop and resize images in your Jekyll project.

Graffic is an ActiveRecord class that helps you work with and attach images to other ActiveRecord records.

Generate an image from a text and css like params.

* RDoc Documentation {available at Rubyforge}[http://carrierwave.rubyforge.org/]. * Source code {hosted at GitHub}[http://github.com/jnicklas/carrierwave] * Please {report any issues}[http://github.com/jnicklas/carrierwave/issues] on GitHub * Please direct any questions at the {mailing list}[http://groups.google.com/group/carrierwave]

JPEG2moro is a method of encoding arbitrary data (including an alpha channel) within the JPEG Application Segment APP10.

Get the color palette from sites

Offline wiki, and outline processor

Helps humankind with simpler captchas

A simple CAPTCHA implementation for Rails 5+ based on RMagick.

Simple captcha

A Ruby Library that renders text in fancy font with some effects to an image