# cshum/imagor

Fast, secure image processing server and Go library, using libvips

Repository: https://github.com/cshum/imagor
Canonical: https://ross.abutalabs.com/products/imagor
Homepage: https://imagor.net
Language: Go
License: Apache-2.0
License Family: permissive
Topics: docker, jpeg, png, libvips, resize-images, crop-image, watermark, gif, webp, avif, golang, jxl, image-processing, image, jpeg-xl, image-server
Last push: 2026-08-26T05:48:16+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 1936, "days_push": 7, "days_rel": 8, "gap_med": 5.5, "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 4012, forks 174 (observed 2026-08-28T04:08:32.338929+00:00)

## What it is
imagor is a fast, secure image processing server and Go library built on libvips, exposing on-the-fly image transformations via a thumbor-compatible URL syntax. It ships with first-class Docker support and streaming-based parallel processing for high-throughput thumbnail generation.

## Use cases
- resize and crop images on the fly via URL
- generate web-optimized thumbnails for a website
- convert images to webp or avif automatically
- add watermarks to images served over HTTP
- replace thumbor with a faster drop-in image server
- serve animated gif crops and transformations
- self-host an image processing service behind a CDN

## When to choose
- you need a high-performance, self-hosted image transformation server
- you want a thumbor-compatible drop-in replacement with better speed
- you need Docker-first deployment with S3/storage loader support
- you want a Go library for libvips-based image processing

## When to avoid
- you only need simple one-off local image edits in a GUI
- your stack requires a managed SaaS image API
- you need heavy video processing beyond thumbnails (see imagorvideo instead)

## Facets
- artifact type: service
- maturity: active
- function: image-processing, http-server, web-framework
- domain: image-processing, web-development, self-hosted, media
- platform: self-hosted, go, cross-platform
- tags: libvips, thumbor-compatible, image-resizing, on-the-fly-thumbnails, watermarking, webp, avif, image-server, docker, linux

## Member repositories
- cshum/imagor (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:32.338929+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 2026-08-29T18:24:00.842975+00:00, confidence not recorded.
  - readme: https://github.com/cshum/imagor (fetched 2026-08-28T04:08:32.338929+00:00, sha e971981c76a4)
  - homepage: https://imagor.net (fetched 2026-08-29T09:16:56.480273+00:00, sha ac0ef2ff2646)
  - site_page: https://docs.imagor.net (fetched 2026-08-29T09:16:56.483792+00:00, sha 64d2b025f8b1)
  - site_page: https://docs.studio.imagor.net (fetched 2026-08-29T09:16:56.485738+00:00, sha db9417efe266)
  - site_page: https://docs.studio.imagor.net/ (fetched 2026-08-29T09:16:56.487508+00:00, sha db9417efe266)
  - site_page: https://docs.imagor.net/ (fetched 2026-08-29T09:16:56.489087+00:00, sha 64d2b025f8b1)
- Data as of 2026-08-30T08:39:29.467469+00:00.