# stavro/arc

:paperclip: Flexible file upload and attachment library for Elixir

Repository: https://github.com/stavro/arc
Canonical: https://ross.abutalabs.com/products/stavro-arc
Language: Elixir
License Family: other
Topics: storage, elixir, attachment, s3, s3-storage
Last push: 2024-07-12T12:41:24+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4107, "days_push": 782, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1165, forks 210 (observed 2026-08-28T04:03:50.026606+00:00)

## What it is
Arc is a flexible file upload and attachment library for Elixir, providing integrations with Amazon S3 and image transformations via ImageMagick and FFmpeg. It is now deprecated in favor of Waffle, a maintained fork with the same APIs and configuration.

## Use cases
- upload files to s3 from elixir
- handle image attachments in phoenix app
- generate thumbnails with imagemagick on upload
- store user avatars with ecto
- generate signed urls for uploaded files
- upload files to local storage in elixir

## When to choose
- you are already on an Elixir version pinned to Arc and cannot migrate
- you need the exact legacy Arc API for compatibility with old storage providers

## When to avoid
- starting a new Elixir project needing file uploads
- you want maintained software with bug fixes
- you need S3 uploads with active community support

## Facets
- artifact type: library
- maturity: abandoned
- function: file-upload, image-processing
- domain: web-development, backend, files
- platform: elixir
- tags: attachments, s3, imagemagick, ecto, deprecated, waffle-successor

## Member repositories
- stavro/arc (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:50.026606+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 2026-08-30T06:29:28.407850+00:00, confidence not recorded.
  - readme: https://github.com/stavro/arc (fetched 2026-08-28T04:03:50.026606+00:00, sha b722ce2e17e5)
- Data as of 2026-08-30T08:39:29.467469+00:00.