Computer vision datasets, transforms, and models for Ruby

Abqari is a Ruby static site generator for author / publisher sites. Folio integration brings in publications, bundles, and series; the engine provides layouts, partials, themes, and a structural CSS framework that user sites consume and selectively override.

ActiveBlob provides a Blob model with SHA1-based deduplication, polymorphic attachments, and support for multiple storage backends (filesystem, S3). Includes automatic metadata extraction for images, videos, and PDFs.

Transformations, image analysis, PDF and video previews, and media probing, written as HotCell operations so they run in an unprivileged container with no network rather than in the application. Despite the name, this gem does not load Active Storage. The name says which consumer it serves, not ...

Contains classes to create derivative image files and perform other image operations

A Bridgetown 2.0+ plugin that pre-generates responsive AVIF and WebP image derivatives at multiple widths, exposes a picture_tag helper for <img> elements, a bg_image_block helper that emits CSS image-set() declarations for backgrounds, and an Inspector that retroactively wraps bare <img> tags wi...

Carrierwave VIPS Daltonize processing

A validate image ratio gem for carrierwave

Library for reading and writing comic book archive files: .cbz, .cbr, .cbt, .cb7, .cba

Generates beautiful and unique default avatars for user accounts

Ruby implementation of core file-format operations used by DistorteD-Jekyll.

DynamicImage is a Rails plugin that simplifies image uploading and processing

A small pure-Ruby (for now) implementation of DHash

EnvStyle is a mountable Rails engine that tints your app's favicon a distinct color per environment at runtime, so side-by-side browser tabs are visually distinguishable. It adds a route and a <link> tag to your layout, works with any front-end (Hotwire, Inertia, or plain Rails), and leaves produ...

Provides Stimulus/WebGPU helpers, installer wiring, and ActiveStorage previews for OpenEXR content.

The file_pipeline gem provides a framework for nondestructive application of file operation batches to files.

A Ruby-native interface for fine-tuning machine learning models, starting with image classification using SigLIP2

foggy-mirror takes a raster image and outputs a blurred version of it using SVG or CSS

A mapping library to stitch geographic map images based on map tiles provided by a rastered tile server.

IIIF image derivative generation helpers for Vips