# coobird/thumbnailator

Thumbnailator - a thumbnail generation library for Java

Repository: https://github.com/coobird/thumbnailator
Canonical: https://ross.abutalabs.com/products/thumbnailator
Language: Java
License: MIT
License Family: permissive
Topics: java, image-processing, thumbnails, fluent-interface, image-resizer
Last push: 2026-02-17T17:48:42+00:00

## Health v2 (maintenance only)
Score: 63/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 68, release rhythm 35, longevity 100
- inputs: {"age_days": 4057, "days_push": 197, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5425, forks 792 (observed 2026-08-28T04:09:17.968068+00:00)

## What it is
Thumbnailator is a Java library for generating high-quality image thumbnails with a simple fluent API. It wraps the Java Image I/O and Java 2D APIs into a single dependency-free JAR available on Maven Central.

## Use cases
- resize images to thumbnails in java
- batch generate thumbnails for a directory of images
- convert images to jpeg thumbnails preserving aspect ratio
- simplify java 2d image scaling code
- create image previews for a web application

## When to choose
- you need high-quality image resizing in a Java/JVM project
- you want a single dependency-free JAR with a simple fluent API
- you need batch thumbnail generation with format conversion and renaming

## When to avoid
- you need advanced image editing beyond resizing and thumbnails
- you work outside the JVM ecosystem
- you require a frozen, guaranteed-stable API (APIs are subject to change)

## Facets
- artifact type: library
- maturity: active
- function: image-processing
- domain: image-processing, web-development, developer-tools
- platform: jvm, cross-platform
- tags: thumbnails, image-resizing, fluent-interface, java, single-jar, maven

## Member repositories
- coobird/thumbnailator (main) score 63

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:17.968068+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 2026-08-29T17:56:55.282659+00:00, confidence not recorded.
  - readme: https://github.com/coobird/thumbnailator (fetched 2026-08-28T04:09:17.968068+00:00, sha 9c30ca30e014)
- Data as of 2026-08-30T08:39:29.467469+00:00.