Use simple_form (>= v2.0) custom inputs to get image previews or a link to uploaded file. Save time and code when you need useful file uploads.

CarrierWave extension to crop uploaded images using Jcrop plugin.

A command line tool to turn images into ASCII art

A gem that easily generates imgproxy URLs for your images

A decent way to change your desktop image

css_sprite is a rails plugin/gem to generate css sprite image automatically.

Construct screencasts in Ruby! Write your script, declare your timeline, mix your audio, and render your video in an easily-edited, easily-repeated DSL. (Depends on ImageMagick, Sox, and FFMPEG for the heavy-lifting.)

Load CSS and JS faster. Minifies, bundles, and optimizes CSS/JS assets ahead of time (e.g., on deploy), not at runtime. Loads popular third-party JS (like jQuery, YUI, and Dojo) from localhost in development, and auto-switches to Google's CDN in production. Lets you switch on LABjs mode to load m...

Jcrop plugin for rails admin. Image cropping made easy!

Use GrabzIt to convert HTML or URL's into images, PDF, videos, rendered HTML or DOCX. These captures have highly customizable options include altering quality, delay, size, browser type, geographic location and much more. Additionally GrabzIt can even convert HTML tables on the web into a CSV or ...

Allows you to create magic PNG images that display differently in the browser than in thumbnails.

Extract tables from PDF as a structured info. Uses ghostscript to print pdf to image, then recognizes table separators optically. No OpenCV or other heavy dependencies

Embed an SVG illustrations by unDraw https://undraw.co/illustrations into your rails app. Take advantage of the on-the-fly color image generation to match your brand identity.

Locally generate two-caption 'Advice Dog'-style meme images

A small gem to run RSpec, Serverspec, Infrataster and Capybara tests against Dockerfiles or Docker images easily.

Collection of tools that make printing of plain text and images to one or many serial thermal printers easy. USB, serial (RS232) and TCP/IP printers are supported. Escper is useful for Ruby based Point of Sale systems that want to print receipts or tickets, but also suitable for stand-alone appli...

Turn an image into an X,Y tile set for use with JS mapping libraries

Finds the dominant colors in an image and scores them against a user-defined palette, using the CIE2000 Delta E formula.

Docsplit is a command-line utility and Ruby library for splitting apart documents into their component parts: searchable UTF-8 plain text, page images or thumbnails in any format, PDFs, single pages, and document metadata (title, author, number of pages...)

Turn an image into an X,Y tile set for use with JS mapping libraries