# AcademySoftwareFoundation/OpenImageIO

Reading, writing, and processing images in a wide variety of file formats, using a format-agnostic API, aimed at VFX applications.

Repository: https://github.com/AcademySoftwareFoundation/OpenImageIO
Canonical: https://ross.abutalabs.com/products/openimageio
Homepage: https://openimageio.readthedocs.org
Language: C++
License: Apache-2.0
License Family: permissive
Topics: images, image-processing, texture, vfx, c-plus-plus, c-plus-plus-11
Last push: 2026-08-26T20:28:30+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 95, longevity 100
- inputs: {"age_days": 5691, "days_push": 7, "days_rel": 33, "gap_med": 13.5, "n_releases_24m": 47}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2349, forks 690 (observed 2026-08-28T04:06:40.269908+00:00)

## What it is
OpenImageIO is a C++ library and toolset for reading, writing, and processing images in nearly any file format through a format-agnostic plugin-based API, built for VFX and animation production. It includes command-line tools like oiiotool, an image viewer, and an ImageCache for scalable texture access.

## Use cases
- convert images between file formats from the command line
- read and write EXR, TIFF, PNG, and other formats in a renderer or compositor
- compare two images for differences in a render pipeline
- inspect image metadata from the terminal
- cache large texture files for film production rendering

## When to choose
- building VFX, rendering, or compositing software that must handle many image formats
- you need a robust, production-proven image I/O library with a plugin architecture
- you want command-line tools for batch image conversion and inspection

## When to avoid
- you only need simple web image handling in a high-level language
- your project is not C++ and bindings are not acceptable
- you need GPU-accelerated image editing rather than I/O and processing

## Facets
- artifact type: library
- maturity: stable
- function: image-processing, file-system, cli, plugin-system, caching
- domain: image-processing, graphics, media, developer-tools
- platform: cpp, cross-platform, cli, windows
- tags: vfx, openexr, texture, image-formats, color-management, animation-pipeline, linux, macos

## Member repositories
- AcademySoftwareFoundation/OpenImageIO (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:40.269908+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 2026-08-30T02:36:56.588172+00:00, confidence not recorded.
  - readme: https://github.com/AcademySoftwareFoundation/OpenImageIO (fetched 2026-08-28T04:06:40.269908+00:00, sha 15fd00ccddb1)
- Data as of 2026-08-30T08:39:29.467469+00:00.