Caleidenticon is a customizable generator for caleidoscope-like identicons.

CarrierWave Audio Waveform

Ruby library to calculate the colorfulness of a ChunkyPNG Image

Compix for oilypng

Diffux-CI, a perceptual diff tool for JS components

Tools for taking and comparing responsive website snapshots

Turn images into collages of emoji

Applitools Ruby SDK

Triangular pixel effects on PNGs

UI testing/screenshot diffing tool

Gridium makes integrating ruby and Selenium a breeze. This is not for novice automation engineers. Novices should checkout Capybara. However, if you're comfortable with Selenium, and have used Capybara but find it not working well give Gridium a shot.

Happo, a perceptual diff tool for JS components

headdesk helps identify and solve common issues in mobile development by analizing APKs and IPAs.

Automated visual regression testing on Sauce Labs.

A library for generating mazes. It supports orthogonal & sigma tessellations in the ASCII or PNG output formats.

Monet is a web UI change comparer.

Test your RubyMotion apps using screenshot comparison.

Image Capturing and assertion at element level, all you need is a single assert statement

["OSM-rb", "allows", "you", "to", "manipulate", "and", "export", "OSM", "map", "tiles.", "This", "includes", "downloading", "tiles,cropping", "to", "any", "specified", "region,", "drawing", "routes", "on", "the", "map", "and", "exporting", "them", "as", "PNG", "files."]

Simple library to checks whether the margins are clear in a PDF