# haraldk/TwelveMonkeys

TwelveMonkeys ImageIO: Additional plug-ins and extensions for Java's ImageIO

Repository: https://github.com/haraldk/TwelveMonkeys
Canonical: https://ross.abutalabs.com/products/twelvemonkeys
Homepage: https://haraldk.github.io/TwelveMonkeys/
Language: Java
License: BSD-3-Clause
License Family: permissive
Topics: imageio, plug-ins, java, tiff, jpeg, bmp, pict, psd, pbm, pgm, ppm, pcx, tga, iff, icc-profiles, icns, svg, webp, java-imageio, twelvemonkeys-imageio
Last push: 2026-08-26T08:55:29+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 69, longevity 100
- inputs: {"age_days": 6208, "days_push": 7, "days_rel": 50, "gap_med": 142, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2142, forks 327 (observed 2026-08-28T04:06:18.494444+00:00)

## What it is
TwelveMonkeys ImageIO is a collection of plugins and extensions for Java's javax.imageio framework, adding read/write support for many image formats not covered by the JDK, such as TIFF, PSD, WebP, and PICT. It is a mature, BSD-3-Clause-licensed Java library distributed via Maven Central.

## Use cases
- read TIFF and BigTIFF images in Java
- open Photoshop PSD files from a Java application
- add WebP decoding support to javax.imageio
- handle legacy image formats like PICT, PCX, and TGA in Java
- read ICC color profiles and image metadata
- convert obscure image formats to PNG or JPEG on the JVM

## When to choose
- your Java app needs to read or write image formats the JDK doesn't support
- you need robust TIFF/BigTIFF handling with metadata on the JVM
- you want a drop-in ImageIO plugin with no native dependencies

## When to avoid
- you need a standalone image converter CLI or GUI
- your project is not on the JVM
- you need full WebP or PSD write support (mostly read-only)

## Facets
- artifact type: library
- maturity: stable
- function: image-processing, parser, plugin-system
- domain: image-processing, developer-tools, files
- platform: jvm, cross-platform
- tags: imageio, javax-imageio, tiff, jpeg, psd, webp, file-format-readers, java-library

## Member repositories
- haraldk/TwelveMonkeys (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:18.494444+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 2026-08-30T02:51:16.299329+00:00, confidence not recorded.
  - readme: https://github.com/haraldk/TwelveMonkeys (fetched 2026-08-28T04:06:18.494444+00:00, sha d9968e4e3d91)
  - homepage: https://haraldk.github.io/TwelveMonkeys/ (fetched 2026-08-29T10:31:17.532301+00:00, sha a8b33eee2a7e)
- Data as of 2026-08-30T08:39:29.467469+00:00.