# carrierwaveuploader/carrierwave

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

Repository: https://github.com/carrierwaveuploader/carrierwave
Canonical: https://ross.abutalabs.com/products/carrierwave
Homepage: https://github.com/carrierwaveuploader/carrierwave
Language: Ruby
License Family: other
Last push: 2026-08-23T07:41:49+00:00

## Health v2 (maintenance only)
Score: 74/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 28, longevity 100
- inputs: {"age_days": 6579, "days_push": 10, "days_rel": 507, "gap_med": 59.0, "n_releases_24m": 3}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8779, forks 1651 (observed 2026-08-28T04:10:25.703131+00:00)

## What it is
CarrierWave is a Ruby gem providing a flexible, class-based solution for handling file uploads in Rack-based web applications such as Rails and Sinatra. It supports pluggable storage backends, image processing, and versioned file variants.

## Use cases
- upload files in a Rails app
- handle avatar image uploads with resizing
- store uploads on S3 or local filesystem
- manage file attachments for ActiveRecord models
- generate thumbnail versions of uploaded images
- add file upload support to a Sinatra application

## When to choose
- you are building a Ruby or Rails application that needs robust, customizable file uploads
- you want pluggable storage (local, S3, fog) and image processing in one gem
- you need versioned variants of uploaded files

## When to avoid
- you are not using Ruby or a Rack-based framework
- you need a language-agnostic upload service rather than a Ruby library
- you prefer newer alternatives like Active Storage built into Rails

## Facets
- artifact type: library
- maturity: stable
- function: file-upload, image-processing, web-framework
- domain: web-development, backend, files
- platform: ruby
- tags: file-uploads, ruby-gem, rails, sinatra, rack, storage-backends, web-server

## Member repositories
- carrierwaveuploader/carrierwave (main) score 74

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:25.703131+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:25:13.600256+00:00, confidence not recorded.
  - readme: https://github.com/carrierwaveuploader/carrierwave (fetched 2026-08-28T04:10:25.703131+00:00, sha 88dcbc30372c)
  - homepage: https://github.com/carrierwaveuploader/carrierwave (fetched 2026-08-29T08:25:24.219450+00:00, sha 57bba58d0d00)
- Data as of 2026-08-30T08:39:29.467469+00:00.